USRE46965E1 - Intermediates for the preparation of analogs of Halichondrin B - Google Patents
Intermediates for the preparation of analogs of Halichondrin B Download PDFInfo
- Publication number
- USRE46965E1 USRE46965E1 US13/924,892 US200513924892A USRE46965E US RE46965 E1 USRE46965 E1 US RE46965E1 US 200513924892 A US200513924892 A US 200513924892A US RE46965 E USRE46965 E US RE46965E
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- 239000000543 intermediate Substances 0.000 title abstract description 41
- FXNFULJVOQMBCW-VZBLNRDYSA-N halichondrin b Chemical compound O([C@@H]1[C@@H](C)[C@@H]2O[C@@H]3C[C@@]4(O[C@H]5[C@@H](C)C[C@@]6(C[C@@H]([C@@H]7O[C@@H](C[C@@H]7O6)[C@@H](O)C[C@@H](O)CO)C)O[C@H]5C4)O[C@@H]3C[C@@H]2O[C@H]1C[C@@H]1C(=C)[C@H](C)C[C@@H](O1)CC[C@H]1C(=C)C[C@@H](O1)CC1)C(=O)C[C@H](O2)CC[C@H]3[C@H]2[C@H](O2)[C@@H]4O[C@@H]5C[C@@]21O[C@@H]5[C@@H]4O3 FXNFULJVOQMBCW-VZBLNRDYSA-N 0.000 title description 15
- 238000002360 preparation method Methods 0.000 title description 12
- ZBLLGPUWGCOJNG-UHFFFAOYSA-N Halichondrin B Natural products CC1CC2(CC(C)C3OC4(CC5OC6C(CC5O4)OC7CC8OC9CCC%10OC(CC(C(C9)C8=C)C%11%12CC%13OC%14C(OC%15CCC(CC(=O)OC7C6C)OC%15C%14O%11)C%13O%12)CC%10=C)CC3O2)OC%16OC(CC1%16)C(O)CC(O)CO ZBLLGPUWGCOJNG-UHFFFAOYSA-N 0.000 title description 11
- 239000000203 mixture Substances 0.000 claims abstract description 146
- 150000001875 compounds Chemical class 0.000 claims abstract description 97
- -1 C1-4 haloaliphatic Chemical group 0.000 claims description 128
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 37
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 20
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical compound [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 claims description 16
- ILMRJRBKQSSXGY-UHFFFAOYSA-N tert-butyl(dimethyl)silicon Chemical group C[Si](C)C(C)(C)C ILMRJRBKQSSXGY-UHFFFAOYSA-N 0.000 claims description 16
- 239000001257 hydrogen Substances 0.000 claims description 14
- 229910052739 hydrogen Inorganic materials 0.000 claims description 14
- 125000001931 aliphatic group Chemical group 0.000 claims description 13
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 claims description 13
- 150000002009 diols Chemical group 0.000 claims description 13
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 13
- 125000004430 oxygen atom Chemical group O* 0.000 claims description 13
- 150000002148 esters Chemical class 0.000 claims description 11
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 9
- 150000005215 alkyl ethers Chemical class 0.000 claims description 8
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 claims description 7
- 125000002774 3,4-dimethoxybenzyl group Chemical group [H]C1=C([H])C(=C([H])C(OC([H])([H])[H])=C1OC([H])([H])[H])C([H])([H])* 0.000 claims description 7
- 125000005278 alkyl sulfonyloxy group Chemical group 0.000 claims description 7
- 229910052736 halogen Inorganic materials 0.000 claims description 7
- 125000006503 p-nitrobenzyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1[N+]([O-])=O)C([H])([H])* 0.000 claims description 7
- 125000005279 aryl sulfonyloxy group Chemical group 0.000 claims description 6
- 125000005905 mesyloxy group Chemical group 0.000 claims description 6
- 125000005547 pivalate group Chemical group 0.000 claims description 6
- 150000003839 salts Chemical class 0.000 claims description 6
- 125000005424 tosyloxy group Chemical group S(=O)(=O)(C1=CC=C(C)C=C1)O* 0.000 claims description 6
- BDAGIHXWWSANSR-UHFFFAOYSA-M Formate Chemical group [O-]C=O BDAGIHXWWSANSR-UHFFFAOYSA-M 0.000 claims description 5
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 claims description 5
- 150000002431 hydrogen Chemical group 0.000 claims description 5
- ITMCEJHCFYSIIV-UHFFFAOYSA-M triflate Chemical compound [O-]S(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-M 0.000 claims description 5
- 125000000026 trimethylsilyl group Chemical group [H]C([H])([H])[Si]([*])(C([H])([H])[H])C([H])([H])[H] 0.000 claims description 5
- SODPIMGUZLOIPE-UHFFFAOYSA-N (4-chlorophenoxy)acetic acid Chemical compound OC(=O)COC1=CC=C(Cl)C=C1 SODPIMGUZLOIPE-UHFFFAOYSA-N 0.000 claims description 4
- ZOJKRWXDNYZASL-NSCUHMNNSA-N (e)-4-methoxybut-2-enoic acid Chemical compound COC\C=C\C(O)=O ZOJKRWXDNYZASL-NSCUHMNNSA-N 0.000 claims description 4
- FFFIRKXTFQCCKJ-UHFFFAOYSA-M 2,4,6-trimethylbenzoate Chemical compound CC1=CC(C)=C(C([O-])=O)C(C)=C1 FFFIRKXTFQCCKJ-UHFFFAOYSA-M 0.000 claims description 4
- HUHXLHLWASNVDB-UHFFFAOYSA-N 2-(oxan-2-yloxy)oxane Chemical class O1CCCCC1OC1OCCCC1 HUHXLHLWASNVDB-UHFFFAOYSA-N 0.000 claims description 4
- GPVOTFQILZVCFP-UHFFFAOYSA-N 2-trityloxyacetic acid Chemical compound C=1C=CC=CC=1C(C=1C=CC=CC=1)(OCC(=O)O)C1=CC=CC=C1 GPVOTFQILZVCFP-UHFFFAOYSA-N 0.000 claims description 4
- XMIIGOLPHOKFCH-UHFFFAOYSA-M 3-phenylpropionate Chemical compound [O-]C(=O)CCC1=CC=CC=C1 XMIIGOLPHOKFCH-UHFFFAOYSA-M 0.000 claims description 4
- FPHVRPCVNPHPBH-UHFFFAOYSA-N 4-benzylbenzoic acid Chemical compound C1=CC(C(=O)O)=CC=C1CC1=CC=CC=C1 FPHVRPCVNPHPBH-UHFFFAOYSA-N 0.000 claims description 4
- JOOXCMJARBKPKM-UHFFFAOYSA-M 4-oxopentanoate Chemical compound CC(=O)CCC([O-])=O JOOXCMJARBKPKM-UHFFFAOYSA-M 0.000 claims description 4
- DTQVDTLACAAQTR-UHFFFAOYSA-M Trifluoroacetate Chemical compound [O-]C(=O)C(F)(F)F DTQVDTLACAAQTR-UHFFFAOYSA-M 0.000 claims description 4
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 claims description 4
- 150000001241 acetals Chemical group 0.000 claims description 4
- XMIIGOLPHOKFCH-UHFFFAOYSA-N beta-phenylpropanoic acid Natural products OC(=O)CCC1=CC=CC=C1 XMIIGOLPHOKFCH-UHFFFAOYSA-N 0.000 claims description 4
- FOCAUTSVDIKZOP-UHFFFAOYSA-M chloroacetate Chemical compound [O-]C(=O)CCl FOCAUTSVDIKZOP-UHFFFAOYSA-M 0.000 claims description 4
- 229940089960 chloroacetate Drugs 0.000 claims description 4
- 125000004122 cyclic group Chemical group 0.000 claims description 4
- 150000002367 halogens Chemical class 0.000 claims description 4
- RMIODHQZRUFFFF-UHFFFAOYSA-M methoxyacetate Chemical compound COCC([O-])=O RMIODHQZRUFFFF-UHFFFAOYSA-M 0.000 claims description 4
- 125000004184 methoxymethyl group Chemical group [H]C([H])([H])OC([H])([H])* 0.000 claims description 4
- 125000004092 methylthiomethyl group Chemical group [H]C([H])([H])SC([H])([H])* 0.000 claims description 4
- 125000006505 p-cyanobenzyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1C#N)C([H])([H])* 0.000 claims description 4
- FAQJJMHZNSSFSM-UHFFFAOYSA-N phenylglyoxylic acid Chemical compound OC(=O)C(=O)C1=CC=CC=C1 FAQJJMHZNSSFSM-UHFFFAOYSA-N 0.000 claims description 4
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 claims description 4
- 125000002221 trityl group Chemical group [H]C1=C([H])C([H])=C([H])C([H])=C1C([*])(C1=C(C(=C(C(=C1[H])[H])[H])[H])[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 claims description 4
- NQPDZGIKBAWPEJ-UHFFFAOYSA-N valeric acid Chemical compound CCCCC(O)=O NQPDZGIKBAWPEJ-UHFFFAOYSA-N 0.000 claims description 4
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical class [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 3
- ZADPBFCGQRWHPN-UHFFFAOYSA-N boronic acid Chemical compound OBO ZADPBFCGQRWHPN-UHFFFAOYSA-N 0.000 claims description 2
- 125000001246 bromo group Chemical group Br* 0.000 claims description 2
- 150000005676 cyclic carbonates Chemical class 0.000 claims description 2
- PWAPCRSSMCLZHG-UHFFFAOYSA-N cyclopentylidene Chemical group [C]1CCCC1 PWAPCRSSMCLZHG-UHFFFAOYSA-N 0.000 claims description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims 2
- VAYTZRYEBVHVLE-UHFFFAOYSA-N 1,3-dioxol-2-one Chemical compound O=C1OC=CO1 VAYTZRYEBVHVLE-UHFFFAOYSA-N 0.000 claims 1
- PGTRXPWCFSKHIL-UHFFFAOYSA-N 2-(benzenesulfonyl)ethyl hydrogen carbonate Chemical compound OC(=O)OCCS(=O)(=O)C1=CC=CC=C1 PGTRXPWCFSKHIL-UHFFFAOYSA-N 0.000 claims 1
- LDZNCSVWVMBVST-UHFFFAOYSA-N 2-trimethylsilylethyl hydrogen carbonate Chemical compound C[Si](C)(C)CCOC(O)=O LDZNCSVWVMBVST-UHFFFAOYSA-N 0.000 claims 1
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims 1
- IEPBPSSCIZTJIF-UHFFFAOYSA-N bis(2,2,2-trichloroethyl) carbonate Chemical compound ClC(Cl)(Cl)COC(=O)OCC(Cl)(Cl)Cl IEPBPSSCIZTJIF-UHFFFAOYSA-N 0.000 claims 1
- JZUVESQYEHERMD-UHFFFAOYSA-N bis[(4-nitrophenyl)methyl] carbonate Chemical compound C1=CC([N+](=O)[O-])=CC=C1COC(=O)OCC1=CC=C([N+]([O-])=O)C=C1 JZUVESQYEHERMD-UHFFFAOYSA-N 0.000 claims 1
- LDHQCZJRKDOVOX-NSCUHMNNSA-N crotonic acid Chemical compound C\C=C\C(O)=O LDHQCZJRKDOVOX-NSCUHMNNSA-N 0.000 claims 1
- FGIVSGPRGVABAB-UHFFFAOYSA-N fluoren-9-ylmethyl hydrogen carbonate Chemical compound C1=CC=C2C(COC(=O)O)C3=CC=CC=C3C2=C1 FGIVSGPRGVABAB-UHFFFAOYSA-N 0.000 claims 1
- CXHHBNMLPJOKQD-UHFFFAOYSA-M methyl carbonate Chemical compound COC([O-])=O CXHHBNMLPJOKQD-UHFFFAOYSA-M 0.000 claims 1
- CQDGTJPVBWZJAZ-UHFFFAOYSA-N monoethyl carbonate Chemical compound CCOC(O)=O CQDGTJPVBWZJAZ-UHFFFAOYSA-N 0.000 claims 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims 1
- LGSAOJLQTXCYHF-UHFFFAOYSA-N tri(propan-2-yl)-tri(propan-2-yl)silyloxysilane Chemical compound CC(C)[Si](C(C)C)(C(C)C)O[Si](C(C)C)(C(C)C)C(C)C LGSAOJLQTXCYHF-UHFFFAOYSA-N 0.000 claims 1
- 238000003786 synthesis reaction Methods 0.000 abstract description 13
- 230000015572 biosynthetic process Effects 0.000 abstract description 9
- 230000002062 proliferating effect Effects 0.000 abstract description 2
- 150000002678 macrocyclic compounds Chemical class 0.000 abstract 1
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 204
- IMNFDUFMRHMDMM-UHFFFAOYSA-N N-Heptane Chemical compound CCCCCCC IMNFDUFMRHMDMM-UHFFFAOYSA-N 0.000 description 199
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 176
- 238000006243 chemical reaction Methods 0.000 description 170
- 239000000243 solution Substances 0.000 description 165
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 137
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 135
- 239000010410 layer Substances 0.000 description 121
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 92
- 239000012044 organic layer Substances 0.000 description 87
- BZLVMXJERCGZMT-UHFFFAOYSA-N Methyl tert-butyl ether Chemical compound COC(C)(C)C BZLVMXJERCGZMT-UHFFFAOYSA-N 0.000 description 85
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 70
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 67
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 58
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 55
- 239000012267 brine Substances 0.000 description 49
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 42
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 41
- 238000000034 method Methods 0.000 description 39
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 35
- 0 [1*]C1C(CC(C)CC)OC(CC(O)C(=C)C(C)CC(C)CCC2OC(CCCC)CC2=C)C1CS(=O)(=O)C1=CC=CC=C1 Chemical compound [1*]C1C(CC(C)CC)OC(CC(O)C(=C)C(C)CC(C)CCC2OC(CCCC)CC2=C)C1CS(=O)(=O)C1=CC=CC=C1 0.000 description 33
- 239000011541 reaction mixture Substances 0.000 description 31
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 30
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 30
- 235000019439 ethyl acetate Nutrition 0.000 description 30
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 30
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 29
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 29
- 238000003756 stirring Methods 0.000 description 29
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 28
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 26
- 239000000284 extract Substances 0.000 description 26
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 26
- 239000000706 filtrate Substances 0.000 description 25
- 239000000047 product Substances 0.000 description 25
- 230000002829 reductive effect Effects 0.000 description 25
- 239000000725 suspension Substances 0.000 description 25
- 239000007787 solid Substances 0.000 description 24
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 22
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 22
- 239000002904 solvent Substances 0.000 description 22
- 235000017557 sodium bicarbonate Nutrition 0.000 description 21
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 20
- 239000000377 silicon dioxide Substances 0.000 description 20
- 229910052681 coesite Inorganic materials 0.000 description 18
- 229910052906 cristobalite Inorganic materials 0.000 description 18
- 238000001914 filtration Methods 0.000 description 18
- 239000012071 phase Substances 0.000 description 18
- 229910052682 stishovite Inorganic materials 0.000 description 18
- 229910052905 tridymite Inorganic materials 0.000 description 18
- 229910052757 nitrogen Inorganic materials 0.000 description 17
- 239000012065 filter cake Substances 0.000 description 16
- 229920006395 saturated elastomer Polymers 0.000 description 16
- 239000011780 sodium chloride Substances 0.000 description 16
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 15
- 239000003921 oil Substances 0.000 description 15
- 235000019198 oils Nutrition 0.000 description 15
- 125000006239 protecting group Chemical group 0.000 description 15
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 14
- 239000012298 atmosphere Substances 0.000 description 14
- VHYFNPMBLIVWCW-UHFFFAOYSA-N 4-Dimethylaminopyridine Chemical compound CN(C)C1=CC=NC=C1 VHYFNPMBLIVWCW-UHFFFAOYSA-N 0.000 description 13
- 238000004587 chromatography analysis Methods 0.000 description 13
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 12
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 12
- 239000012141 concentrate Substances 0.000 description 12
- 238000005192 partition Methods 0.000 description 12
- 238000004128 high performance liquid chromatography Methods 0.000 description 11
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 11
- 239000002244 precipitate Substances 0.000 description 11
- 239000012043 crude product Substances 0.000 description 10
- 238000004821 distillation Methods 0.000 description 10
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 10
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 description 9
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 9
- 239000000463 material Substances 0.000 description 9
- 238000010898 silica gel chromatography Methods 0.000 description 9
- RIOQSEWOXXDEQQ-UHFFFAOYSA-N triphenylphosphine Chemical compound C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 RIOQSEWOXXDEQQ-UHFFFAOYSA-N 0.000 description 9
- 239000008346 aqueous phase Substances 0.000 description 8
- 238000004440 column chromatography Methods 0.000 description 8
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 8
- 125000005843 halogen group Chemical group 0.000 description 8
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 description 8
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 8
- AAWZDTNXLSGCEK-UHFFFAOYSA-N Cordycepinsaeure Natural products OC1CC(O)(C(O)=O)CC(O)C1O AAWZDTNXLSGCEK-UHFFFAOYSA-N 0.000 description 7
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 7
- LQZMLBORDGWNPD-UHFFFAOYSA-N N-iodosuccinimide Chemical compound IN1C(=O)CCC1=O LQZMLBORDGWNPD-UHFFFAOYSA-N 0.000 description 7
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 7
- 125000003118 aryl group Chemical group 0.000 description 7
- 125000000852 azido group Chemical group *N=[N+]=[N-] 0.000 description 7
- 229910052799 carbon Inorganic materials 0.000 description 7
- 239000012634 fragment Substances 0.000 description 7
- 238000011065 in-situ storage Methods 0.000 description 7
- 229910000028 potassium bicarbonate Inorganic materials 0.000 description 7
- 239000011736 potassium bicarbonate Substances 0.000 description 7
- 239000000843 powder Substances 0.000 description 7
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 7
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 7
- AAWZDTNXLSGCEK-WYWMIBKRSA-N (-)-quinic acid Chemical compound O[C@@H]1C[C@](O)(C(O)=O)C[C@@H](O)[C@H]1O AAWZDTNXLSGCEK-WYWMIBKRSA-N 0.000 description 6
- GQHTUMJGOHRCHB-UHFFFAOYSA-N 2,3,4,6,7,8,9,10-octahydropyrimido[1,2-a]azepine Chemical compound C1CCCCN2CCCN=C21 GQHTUMJGOHRCHB-UHFFFAOYSA-N 0.000 description 6
- 229960000549 4-dimethylaminophenol Drugs 0.000 description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 6
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 6
- WQDUMFSSJAZKTM-UHFFFAOYSA-N Sodium methoxide Chemical compound [Na+].[O-]C WQDUMFSSJAZKTM-UHFFFAOYSA-N 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
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- JZCCFEFSEZPSOG-UHFFFAOYSA-L copper(II) sulfate pentahydrate Chemical compound O.O.O.O.O.[Cu+2].[O-]S([O-])(=O)=O JZCCFEFSEZPSOG-UHFFFAOYSA-L 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010511 deprotection reaction Methods 0.000 description 1
- 239000002027 dichloromethane extract Substances 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- DGODWNOPHMXOTR-UHFFFAOYSA-N dipotassium;dioxido(dioxo)osmium;dihydrate Chemical compound O.O.[K+].[K+].[O-][Os]([O-])(=O)=O DGODWNOPHMXOTR-UHFFFAOYSA-N 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 208000035475 disorder Diseases 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000011067 equilibration Methods 0.000 description 1
- 125000004185 ester group Chemical group 0.000 description 1
- 239000012527 feed solution Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 125000001188 haloalkyl group Chemical group 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 1
- YCOZIPAWZNQLMR-UHFFFAOYSA-N heptane - octane Natural products CCCCCCCCCCCCCCC YCOZIPAWZNQLMR-UHFFFAOYSA-N 0.000 description 1
- CLUPOLFGIGLMIQ-UHFFFAOYSA-N heptane;propan-2-ol Chemical compound CC(C)O.CCCCCCC CLUPOLFGIGLMIQ-UHFFFAOYSA-N 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- USZLCYNVCCDPLQ-UHFFFAOYSA-N hydron;n-methoxymethanamine;chloride Chemical compound Cl.CNOC USZLCYNVCCDPLQ-UHFFFAOYSA-N 0.000 description 1
- 150000002460 imidazoles Chemical class 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- ZLVXBBHTMQJRSX-VMGNSXQWSA-N jdtic Chemical compound C1([C@]2(C)CCN(C[C@@H]2C)C[C@H](C(C)C)NC(=O)[C@@H]2NCC3=CC(O)=CC=C3C2)=CC=CC(O)=C1 ZLVXBBHTMQJRSX-VMGNSXQWSA-N 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- NWYYWIJOWOLJNR-RXMQYKEDSA-N l-valinol Chemical compound CC(C)[C@H](N)CO NWYYWIJOWOLJNR-RXMQYKEDSA-N 0.000 description 1
- 208000032839 leukemia Diseases 0.000 description 1
- 239000011981 lindlar catalyst Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- QDYVPYWKJOJPBF-UHFFFAOYSA-M lithium;hydroxide;dihydrate Chemical compound [Li+].O.O.[OH-] QDYVPYWKJOJPBF-UHFFFAOYSA-M 0.000 description 1
- 201000005296 lung carcinoma Diseases 0.000 description 1
- 229940041033 macrolides Drugs 0.000 description 1
- 229940050906 magnesium chloride hexahydrate Drugs 0.000 description 1
- DHRRIBDTHFBPNG-UHFFFAOYSA-L magnesium dichloride hexahydrate Chemical compound O.O.O.O.O.O.[Mg+2].[Cl-].[Cl-] DHRRIBDTHFBPNG-UHFFFAOYSA-L 0.000 description 1
- BXBLTKZWYAHPKM-UHFFFAOYSA-M magnesium;methanidyl(trimethyl)silane;chloride Chemical compound [Mg+2].[Cl-].C[Si](C)(C)[CH2-] BXBLTKZWYAHPKM-UHFFFAOYSA-M 0.000 description 1
- 201000001441 melanoma Diseases 0.000 description 1
- KXKVLQRXCPHEJC-UHFFFAOYSA-N methyl acetate Chemical compound COC(C)=O KXKVLQRXCPHEJC-UHFFFAOYSA-N 0.000 description 1
- 150000004702 methyl esters Chemical group 0.000 description 1
- 210000004688 microtubule Anatomy 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- HWWVAHCWJLGKLW-UHFFFAOYSA-N n,n-dimethylhydroxylamine;hydron;chloride Chemical compound Cl.CN(C)O HWWVAHCWJLGKLW-UHFFFAOYSA-N 0.000 description 1
- KCLDECJIUSCXOX-GFCCVEGCSA-N n-[2-methyl-6-[(4s)-4-propan-2-yl-4,5-dihydro-1,3-oxazol-2-yl]phenyl]methanesulfonamide Chemical compound CC(C)[C@H]1COC(C=2C(=C(C)C=CC=2)NS(C)(=O)=O)=N1 KCLDECJIUSCXOX-GFCCVEGCSA-N 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000010502 orange oil Substances 0.000 description 1
- 125000001181 organosilyl group Chemical group [SiH3]* 0.000 description 1
- 229910000489 osmium tetroxide Inorganic materials 0.000 description 1
- 201000008968 osteosarcoma Diseases 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- KHIWWQKSHDUIBK-UHFFFAOYSA-N periodic acid Chemical compound OI(=O)(=O)=O KHIWWQKSHDUIBK-UHFFFAOYSA-N 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 230000003389 potentiating effect Effects 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 201000001514 prostate carcinoma Diseases 0.000 description 1
- ZDYVRSLAEXCVBX-UHFFFAOYSA-N pyridinium p-toluenesulfonate Chemical compound C1=CC=[NH+]C=C1.CC1=CC=C(S([O-])(=O)=O)C=C1 ZDYVRSLAEXCVBX-UHFFFAOYSA-N 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 239000012429 reaction media Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000004366 reverse phase liquid chromatography Methods 0.000 description 1
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 125000003808 silyl group Chemical group [H][Si]([H])([H])[*] 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- QDRKDTQENPPHOJ-UHFFFAOYSA-N sodium ethoxide Chemical compound [Na+].CC[O-] QDRKDTQENPPHOJ-UHFFFAOYSA-N 0.000 description 1
- 235000011006 sodium potassium tartrate Nutrition 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 230000000707 stereoselective effect Effects 0.000 description 1
- 238000011924 stereoselective hydrogenation Methods 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
- 125000000547 substituted alkyl group Chemical group 0.000 description 1
- YBBRCQOCSYXUOC-UHFFFAOYSA-N sulfuryl dichloride Chemical compound ClS(Cl)(=O)=O YBBRCQOCSYXUOC-UHFFFAOYSA-N 0.000 description 1
- NHGXDBSUJJNIRV-UHFFFAOYSA-M tetrabutylammonium chloride Chemical compound [Cl-].CCCC[N+](CCCC)(CCCC)CCCC NHGXDBSUJJNIRV-UHFFFAOYSA-M 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 description 1
- VXUYXOFXAQZZMF-UHFFFAOYSA-N titanium(IV) isopropoxide Chemical compound CC(C)O[Ti](OC(C)C)(OC(C)C)OC(C)C VXUYXOFXAQZZMF-UHFFFAOYSA-N 0.000 description 1
- 238000006257 total synthesis reaction Methods 0.000 description 1
- CSRZQMIRAZTJOY-UHFFFAOYSA-N trimethylsilyl iodide Substances C[Si](C)(C)I CSRZQMIRAZTJOY-UHFFFAOYSA-N 0.000 description 1
- JBWKIWSBJXDJDT-UHFFFAOYSA-N triphenylmethyl chloride Chemical compound C=1C=CC=CC=1C(C=1C=CC=CC=1)(Cl)C1=CC=CC=C1 JBWKIWSBJXDJDT-UHFFFAOYSA-N 0.000 description 1
- UCPYLLCMEDAXFR-UHFFFAOYSA-N triphosgene Chemical compound ClC(Cl)(Cl)OC(=O)OC(Cl)(Cl)Cl UCPYLLCMEDAXFR-UHFFFAOYSA-N 0.000 description 1
- 229960003048 vinblastine Drugs 0.000 description 1
- JXLYSJRDGCGARV-XQKSVPLYSA-N vincaleukoblastine Chemical compound C([C@@H](C[C@]1(C(=O)OC)C=2C(=CC3=C([C@]45[C@H]([C@@]([C@H](OC(C)=O)[C@]6(CC)C=CCN([C@H]56)CC4)(O)C(=O)OC)N3C)C=2)OC)C[C@@](C2)(O)CC)N2CCC2=C1NC1=CC=CC=C21 JXLYSJRDGCGARV-XQKSVPLYSA-N 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 235000005074 zinc chloride Nutrition 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
Classifications
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- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/18—Compounds having one or more C—Si linkages as well as one or more C—O—Si linkages
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- A61K31/33—Heterocyclic compounds
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- A61K31/34—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having five-membered rings with one oxygen as the only ring hetero atom, e.g. isosorbide
- A61K31/341—Heterocyclic compounds having oxygen as the only ring hetero atom, e.g. fungichromin having five-membered rings with one oxygen as the only ring hetero atom, e.g. isosorbide not condensed with another ring, e.g. ranitidine, furosemide, bufetolol, muscarine
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- C07D307/04—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having no double bonds between ring members or between ring members and non-ring members
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- C07D307/04—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having no double bonds between ring members or between ring members and non-ring members
- C07D307/18—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having no double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
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- C07D307/28—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to ring carbon atoms
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- C07D307/32—Oxygen atoms
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- C07D407/06—Heterocyclic compounds containing two or more hetero rings, at least one ring having oxygen atoms as the only ring hetero atoms, not provided for by group C07D405/00 containing two hetero rings linked by a carbon chain containing only aliphatic carbon atoms
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- C07F7/02—Silicon compounds
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- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
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- C07F7/18—Compounds having one or more C—Si linkages as well as one or more C—O—Si linkages
- C07F7/1804—Compounds having Si-O-C linkages
- C07F7/1872—Preparation; Treatments not provided for in C07F7/20
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- C07H15/26—Acyclic or carbocyclic radicals, substituted by hetero rings
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- Y02P20/55—Design of synthesis routes, e.g. reducing the use of auxiliary or protecting groups
Definitions
- the present invention relates to compounds useful as intermediates in the synthesis of pharmaceutically active macrolide compounds.
- Halichondrin B is a potent anticancer agent originally isolated from the marine sponge Halichondria okadai, and subsequently found in Axinella sp., Phakellia carteri, and Lissondendryx sp. A total synthesis of Halichondrin B was published in 1992 (Aicher, T. D. et al., J. Am. Chem. Soc. 114: 3162-3164).
- Halichondrin B has demonstrated in vitro inhibition of tubulin polymerization, microtubule assembly, beta s -tubulin crosslinking, GTP and vinblastine binding to tubulin, and tubulin-dependent GTP hydrolysis and has shown in vitro and in vivo anti-cancer properties. Accordingly, there is a need to develop synthetic methods for preparing analogs of Halichondrin B useful as anti-cancer agents.
- the present invention provides methods for preparing analogs of Halichondrin B having pharmaceutical activity, such as anticancer or antimitotic (mitosis-blocking) activity.
- These compounds include a compound of formula B-1939:
- These compounds are useful for treating cancer and other proliferative disorders including, but not limited to, melanoma, fibrosarcoma, leukemia, colon carcinoma, ovarian carcinoma, breast carcinoma, osteosarcoma, prostate carcinoma, and lung carcinoma.
- the present invention also provides synthetic intermediates useful for preparing said analogs of Halichondrin B.
- Halichondrin B As described in, e.g. U.S. Pat. No. 6,365,759 and U.S. Pat. No. 6,469,182 the entirety of which are incorporated herein by reference.
- These Halichondrin B analogs are prepared generally by the assembly of three fragments F-1, F-2, and F-3, as shown by Scheme I below:
- the present invention provides a compound F-1:
- R 1 is OR. In other embodiments, R 1 is OR wherein R is hydrogen, methyl, or benzyl.
- PG 1 and PG 2 are hydrogen. In other embodiments, one of PG 1 and PG 2 is hydrogen.
- each of PG 1 and PG 2 taken with the oxygen atom to which it is bound, is independently selected from esters, ethers, silyl ethers, alkyl ethers, arylalkyl ethers, and alkoxyalkyl ethers. Examples of such esters include formates, acetates, carbonates, and sulfonates.
- Specific examples include formate, benzoyl formate, chloroacetate, trifluoroacetate, methoxyacetate, triphenylmethoxyacetate, p-chlorophenoxyacetate, 3-phenylpropionate, 4-oxopentanoate, 4,4-(ethylenedithio) pentanoate, pivaloate (trimethylacetyl), crotonate, 4-methoxy-crotonate, benzoate, p-benzylbenzoate, 2,4,6-trimethylbenzoate, or carbonates such as methyl, 9-fluorenylmethyl, ethyl, 2,2,2-trichloroethyl, 2-(trimethylsilyl)ethyl, 2-(phenylsulfonyl)ethyl, vinyl, allyl, and p-nitrobenzyl.
- silyl ethers examples include trimethylsilyl, triethylsilyl, t-butyldimethylsilyl, t-butyldiphenylsilyl, triisopropylsilyl, and other trialkylsilyl ethers.
- Alkyl ethers include methyl, benzyl, p-methoxybenzyl, 3,4-dimethoxybenzyl, trityl, t-butyl, allyl, and allyloxycarbonyl ethers or derivatives.
- Alkoxyalkyl ethers include acetals such as methoxymethyl, methylthiomethyl, (2-methoxyethoxy)methyl, benzyloxymethyl, beta-(trimethylsilyl)ethoxymethyl, and tetrahydropyranyl ethers.
- arylalkyl ethers include benzyl, p-methoxybenzyl (MPM), 3,4-dimethoxybenzyl, o-nitrobenzyl, p-nitrobenzyl, p-halobenzyl, 2,6-dichlorobenzyl, p-cyanobenzyl, 2- and 4-picolyl.
- one or both of the PG 1 and PG 2 moieties of F-1 are silyl ethers or arylalkyl ethers. In yet other embodiments, one or both of the PG 1 and PG 2 moieties of F-1 are t-butyldimethylsilyl or benzoyl. In still other embodiments, both of the PG 1 and PG 2 moieties of F-1 are t-butyldimethylsilyl.
- PG 1 and PG 2 are taken together, with the oxygen atoms to which they are bound, to form a diol protecting group, such as a cyclic acetal or ketal.
- a diol protecting group such as a cyclic acetal or ketal.
- groups include methylene, ethylidene, benzylidene, isopropylidene, cyclohexylidene, and cyclopentylidene, a silylene derivative such as di-t-butylsilylene and a 1,1,3,3-tetraisopropyldisiloxanylidene derivative, a cyclic carbonate, and a cyclic boronate.
- PG 1 and PG 2 are taken together to form an acetonide group.
- R 2 is CHO.
- R 2 is —CH ⁇ CH 2 .
- the present invention provides a compound of formula F-1 having the stereochemistry depicted in compound F-1′:
- TBS refers to t-butyldimethylsilyl
- the present invention provides a compound F-2:
- a suitable leaving group is a chemical moiety that is readily displaced by a desired incoming chemical moiety.
- Suitable leaving groups are well known in the art, e.g., see, “Advanced Organic Chemistry,” Jerry March, 4 th Ed., pp. 351-357, John Wiley and Sons, N.Y. (1992).
- Such leaving groups include, but are not limited to, halogen, alkoxy, sulphonyloxy, optionally substituted alkylsulphonyloxy, optionally substituted alkenylsulfonyloxy, optionally substituted arylsulfonyloxy, and diazonium moieties.
- Suitable leaving groups include chloro, iodo, bromo, fluoro, methanesulfonyloxy (mesyloxy), tosyloxy, triflate, nitro-phenylsulfonyloxy (nosyloxy), and bromo-phenylsulfonyloxy (brosyloxy).
- the LG 1 moiety of F-2 is sulphonyloxy, optionally substituted alkylsulphonyloxy, optionally substituted alkenylsulfonyloxy, or optionally substituted arylsulfonyloxy.
- the LG 1 moiety of F-2 is optionally substituted alkylsulphonyloxy.
- the LG 1 moiety of F-2 is mesyloxy or tosyloxy.
- the X moiety of F-2 is halogen. In other embodiments, the X moiety of F-2 is sulphonyloxy, optionally substituted alkylsulphonyloxy, optionally substituted alkenylsulfonyloxy, or optionally substituted arylsulfonyloxy. In still other embodiments, the X moiety of F-2 is triflate.
- the PG 3 moiety of F-2, taken with the oxygen atom to which it is bound is a silyl ether. In other embodiments, the PG 3 moiety of F-2, taken with the oxygen atom to which it is bound, is an ester group. According to one aspect of the present invention, the PG 3 moiety of F-2 is t-butyldimethylsilyl. According to another aspect of the present invention, the PG 3 moiety of F-2 is pivaloyl or benzoyl.
- the present invention provides a compound of formula F-2 having the stereochemistry depicted in formula F-2′:
- a compound F-2a or F-2b is provided:
- MsO mesylate
- TfO triflate
- OPv pivaloate
- OBz benzoate
- TSO tosylate
- the present invention provides a compound of formula F-2b wherein said compound is crystalline.
- a compound of formula F-2b is provided wherein said compound is crystallized from an alkane solvent.
- crystalline F-2b is provided wherein said compound is crystallized from pentane or heptane.
- crystalline F-2b is provided wherein said compound is crystallized at about 0° C.
- Suitable hydroxyl protecting group PG 5 is as described and defined for the PG 3 moiety of compound F-2, supra.
- PG 5 taken with the oxygen atom to which it is bound, is a silyl ether.
- PG 5 is t-butyldimethylsilyl.
- the Alk moiety of compound F-2d is methyl.
- R′′ moiety of compound F-2e may be transformed from OH to a protected hydroxyl group, OPG 3 , or, alternatively, directly to LG 4 . Such transformations are known to one skilled in the art and include, among others, those described herein.
- R′′ is OH or LG 4 .
- the LG 4 leaving group of formula F-2e is as described and defined for the LG 1 moiety of compound F-2, supra.
- LG 4 is tosyloxy or mesyloxy.
- PG 3 moiety of compound F-2e is as defined and described for the PG 3 moiety of compound F-2, supra.
- PG 3 taken with the oxygen atom to which it is bound, is a silyl ether.
- PG 3 is t-butyldiphenylsilyl.
- Still another aspect of the present invention provides a compound F-2f:
- Alk, PG 3 and PG 5 are as defined generally and in classes and subclasses described above and herein.
- Compounds of formula F-2f are used to prepare compounds of formula F-2 by methods described herein and those known in the art.
- compounds of formula F-2 are prepared from D-quinic acid as shown by Scheme II below. Details of the preparation of compounds of formula F-2 are set forth in the Examples infra.
- Scheme III above shows an alternate method for preparing intermediate 17 from intermediate 12 via Eschenmoser-Tanabe Fragmentation, wherein each Rx R x is independently OPG x or CN wherein PG x is a suitable hydroxyl protecting group as described herein.
- Intermediate 17 is then used to prepare compounds of formula F-2 according to Scheme II above.
- Still another method for preparing compounds of formula F-2 from D-quinic acid provides an alternative route from intermediate 9 to intermediate 17 as shown in Scheme IV below.
- PG y is a suitable carboxyl protecting group, as described herein, and each PG x is independently a suitable hydroxyl protecting group as described herein.
- each PG 5 and PG 6 is independently a suitable hydroxyl protecting group.
- PG 5 and PG 6 are taken together to form a cyclic diol protecting group.
- PG 5 and PG 6 are taken together to form a cyclohexylidene protecting group.
- LG 5 is a suitable leaving group. Such suitable leaving groups are well known in the art and include those described herein.
- LG 5 is mesyloxy or tosyloxy.
- the present invention provides a compound of formula A:
- the present invention provides a compound of formula A having the stereochemistry as depicted in formula A′:
- the present invention provides a compound of formula A′ wherein W is C(O) and said compound is of formula A′-1:
- the A group of formulae A and A′ is a C 1-6 aliphatic group, wherein A is optionally substituted with Q 1 .
- the A group of formulae A and A′ is a C 2-5 aliphatic group, wherein A is substituted with one or more Q 1 groups.
- each Q 1 group of formulae A and A′ is independently selected from cyano, halo, azido, oxo, OR, SR, SO 2 R, OSO 2 R, N(R) 2 , NR(CO)R, NR(CO) (CO)R, NR(CO)N(R) 2 , NR(CO)OR, (CO)OR, O(CO)R, (CO)N(R) 2 , O(CO)N(R) 2 , or OPG 1 , wherein PG 1 is a suitable hydroxyl protecting group.
- each Q 1 group of formulae A and A′ is independently selected from cyano, halo, azido, oxo, N(R) 2 , OR, SR, SO 2 R, or OSO 2 R. In other embodiments, each Q 1 group of formulae A and A′ is independently selected from cyano, halo, azido, oxo, OR, SR, SO 2 R, OSO 2 R, N(R) 2 , NR(CO)R, NR(CO)R, and O(CO)N (R) 2 .
- exemplary Q 1 groups include NH(CO) (CO)-(heterocyclic radical or heteroaryl), OSO 2 -(aryl or substituted aryl), O(CO)NH-(aryl or substituted aryl), aminoalkyl, hydroxyalkyl, NH(CO) (CO)-(aryl or substituted aryl), NH(CO) (alkyl) (heteroaryl or heterocyclic radical), O(substituted or unsubstituted alkyl) (substituted or unsubstituted aryl), and NH(CO) (alkyl) (aryl or substituted aryl).
- the A group of formulae A and A′ has one of the following characteristics:
- (S)-hydroxyl means that the configuration of the carbon atom having the hydroxyl group is (S).
- Embodiments of the invention also include compounds wherein A is substituted at least once on each carbon atom: (1) alpha and gamma, (2) beta and gamma, or (3) alpha and beta to the carbon atom to which A is attached.
- Each of the alpha, beta, and gamma carbon atoms are independently in the (R) or (S) configuration.
- the invention provides said compound wherein A is substituted at least once on each carbon atom alpha and beta to the carbon atom to which A is attached.
- Exemplary A groups of formulae A and A′ include 2,3-dihydroxypropyl, 2-hydroxyethyl, 3-hydroxy-4-perfluorobutyl, 2,4,5-trihydroxypentyl, 3-amino-2-hydroxypropyl, 1,2-dihydroxyethyl, 2,3-dihyroxy-4-perflurobutyl 2,3-dihydroxy-4-perfluorobutyl, 3-cyano-2-hydroxypropyl, 2-amino-1-hydroxy ethyl, 3-azido-2-hydroxypropyl, 3,3-difluoro-2,4-dihydroxybutyl, 2,4-dihydroxybutyl, 2-hydroxy-2-(p-fluorophenyl)-ethyl, —CH 2 (CO) (substituted or unsubstituted aryl), —CH 2 (CO) (alkyl or substituted alkyl, such as haloalkyl or hydroxyalkyl) and 3,3-diflu
- the A group of either of formulae A and A′ is 3-amino-2-hydroxypropyl.
- the present invention provides a compound of either of formulae A and A′, wherein Q 1 is OPG 1 , wherein PG 1 is a suitable hydroxyl protecting group.
- Suitable hydroxyl protecting groups are well known in the art and include those described in detail in Protecting Groups in Organic Synthesis, T. W. Greene and P. G. M. Wuts, 3 rd edition, John Wiley & Sons, 1999, the entirety of which is incorporated herein by reference.
- the PG 1 moiety of either of formulae A and A′, taken with the oxygen atom to which it is bound is selected from esters, ethers, silyl ethers, alkyl ethers, arylalkyl ethers, and alkoxyalkyl ethers.
- esters include formates, acetates, carbonates, and sulfonates.
- Specific examples include formate, benzoyl formate, chloroacetate, trifluoroacetate, methoxyacetate, triphenylmethoxyacetate, p-chlorophenoxyacetate, 3-phenylpropionate, 4-oxopentanoate, 4,4-(ethylenedithio)pentanoate, pivaloate (trimethylacetyl), crotonate, 4-methoxy-crotonate, benzoate, p-benzylbenzoate, 2,4,6-trimethylbenzoate, carbonates such as methyl, 9-fluorenylmethyl, ethyl, 2,2,2-trichloroethyl, 2-(trimethylsilyl)ethyl, 2-(phenylsulfonyl)ethyl, vinyl, allyl, and p-nitrobenzyl.
- silyl ethers examples include trimethylsilyl, triethylsilyl, t-butyldimethylsilyl, t-butyldiphenylsilyl, triisopropylsilyl, and other trialkylsilyl ethers.
- Alkyl ethers include methyl, benzyl, p-methoxybenzyl, 3,4-dimethoxybenzyl, trityl, t-butyl, allyl, and allyloxycarbonyl ethers or derivatives.
- Alkoxyalkyl ethers include acetals such as methoxymethyl, methylthiomethyl, (2-methoxyethoxy)methyl, benzyloxymethyl, beta-(trimethylsilyl)ethoxymethyl, and tetrahydropyranyl ethers.
- arylalkyl ethers include benzyl, p-methoxybenzyl (MPM), 3,4-dimethoxybenzyl, o-nitrobenzyl, p-nitrobenzyl, p-halobenzyl, 2,6-dichlorobenzyl, p-cyanobenzyl, 2- and 4-picolyl.
- the PG 1 moiety of either of formulae A and A′, taken with the oxygen atom to which it is bound, is a silyl ether or arylalkyl ether.
- the PG 1 moiety of either of formulae A and A′ is t-butyldimethylsilyl or benzoyl.
- the PG 1 moiety of either of formulae A and A′ is t-butyldimethylsilyl (“TBS”).
- two Q 1 on A are optionally taken together to form a 3-8 membered saturated, partially unsaturated, or aryl ring having 0-4 heteroatoms independently selected from nitrogen, oxygen, or sulfur. In certain embodiments, two Q 1 on A are taken together to form an epoxide ring.
- the PG 5 and PG 6 groups of formula A and A′ are independently selected from those suitable protecting groups described above for the PG 1 group of formula A and A′. In other embodiments, the PG 5 and PG 6 groups of formula A and A′ are taken together to form a cyclic diol protecting group.
- diol protecting groups are well known in the art and include those described by Greene and include cyclohexylidene and benzylidene diol protecting groups.
- the present invention provides a method for preparing compounds of formula F-2 according to Schemes V-a, V-b, and V-c below:
- the present invention provides crystalline ER-817664.
- Scheme VI-a shows a general method for using this compound in the preparation of intermediates useful for preparing compounds of formula F-2.
- intermediate 2 (from Scheme II) is used to prepare ER-812829 in a stereoselective manner.
- protecting groups are useful for protecting the diol of ER-812829.
- Such groups are known to one of ordinary skill in the art and include cyclohexylidene and benzylidene diol protecting groups.
- step (a) the hydroxyl group of ER-811510 is treated with 2-bromo acetylchloride to form ER-812771.
- the bromo intermediate is treated with triphenylphosphine to form a Wittig reagent in situ in a manner substantially similar to that described by Murphy, et al, Tetrahedron Letters, 40, (1999) 3455-3456.
- This Wittig reagent then forms the lactone ER-812772.
- stereoselective hydrogenation of the double bond affords ER-812829.
- the present invention also provides a method for preparing intermediates useful for preparing compounds of formula F-2 from D-quinic acid, from intermediate ER-812829 depicted in Scheme VII above, as shown in Scheme VII-a below.
- the present invention provides a compound F-3:
- R 4 group of F-3 is an optionally substituted C 1-6 aliphatic group or an optionally substituted aryl group.
- suitable R 4 groups include methyl, ethyl, propyl, isopropyl, butyl, isobutyl, benzyl, and phenyl wherein each group is optionally substituted.
- suitable leaving groups are well known in the art, e.g., see “Advanced Organic Chemistry,” Jerry March, 4 th Ed., pp. 351-357, John Wiley and Sons, N.Y. (1992).
- Such leaving groups include, but are not limited to, halogen, alkoxy, sulphonyloxy, optionally substituted alkylsulphonyloxy, optionally substituted alkenylsulfonyloxy, optionally substituted arylsulfonyloxy, silyl, and diazonium moieties.
- Suitable leaving groups include chloro, iodo, bromo, fluoro, methanesulfonyloxy (mesyloxy), tosyloxy, triflate, nitro-phenylsulfonyloxy (nosyloxy), and bromo-phenylsulfonyloxy (brosyloxy).
- the LG 2 moiety of F-3 is iodo.
- the suitable leaving group may be generated in situ within the reaction medium.
- LG 2 in a compound of formula F-3 may be generated in situ from a precursor of that compound of formula F-3 wherein said precursor contains a group readily replaced by LG 2 in situ.
- said precursor of a compound of formula F-3 contains a group (for example, a trimethylsilyl group) which is replaced in situ by LG 2 , such as an iodo group.
- the source of the iodo group may be, e.g., N-iodosuccinimide.
- Such an in situ generation of a suitable leaving group is well known in the art, e.g., see Id.
- each PG 4 taken with the oxygen atom to which it is bound, is independently selected from esters, ethers, silyl ethers, alkyl ethers, arylalkyl ethers, and alkoxyalkyl ethers. Examples of such esters include formates, acetates, carbonates, and sulfonates.
- Specific examples include formate, benzoyl formate, chloroacetate, trifluoroacetate, methoxyacetate, triphenylmethoxyacetate, p-chlorophenoxyacetate, 3-phenylpropionate, 4-oxopentanoate, 4,4-(ethylenedithio)pentanoate, pivaloate (trimethylacetyl), crotonate, 4-methoxy-crotonate, benzoate, p-benzylbenzoate, 2,4,6-trimethylbenzoate, carbonates such as methyl, 9-fluorenylmethyl, ethyl, 2,2,2-trichloroethyl, 2-(trimethylsilyl)ethyl, 2-(phenylsulfonyl)ethyl, vinyl, allyl, and p-nitrobenzyl.
- silyl ethers examples include trimethylsilyl, triethylsilyl, t-butyldimethylsilyl, t-butyldiphenylsilyl, triisopropylsilyl, and other trialkylsilyl ethers.
- Alkyl ethers include methyl, benzyl, p-methoxybenzyl, 3,4-dimethoxybenzyl, trityl, t-butyl, allyl, and allyloxycarbonyl ethers or derivatives.
- Alkoxyalkyl ethers include acetals such as methoxymethyl, methylthiomethyl, (2-methoxyethoxy)methyl, benzyloxymethyl, beta-(trimethylsilyl)ethoxymethyl, and tetrahydropyranyl ethers.
- arylalkyl ethers include benzyl, p-methoxybenzyl (MPM), 3,4-dimethoxybenzyl, o-nitrobenzyl, p-nitrobenzyl, p-halobenzyl, 2,6-dichlorobenzyl, p-cyanobenzyl, 2- and 4-picolyl.
- one, two, or three of the PG 4 moieties of F-3, taken with the oxygen atom(s) to which they are bound, are silyl ethers or arylalkyl ethers.
- one, two, or three of the PG 4 moieties of F-3 are t-butyldimethylsilyl or benzyl.
- all three of the PG 4 moieties of F-3 are t-butyldimethylsilyl.
- a compound of formula F-3 wherein said compound has the stereochemistry as depicted in formula F-3′:
- a compound F-3a is provided:
- TBS refers to t-butyldimethylsilyl
- Scheme VIII above shows a general method for preparing intermediate F-5a from fragments F-1 and F-2.
- fragments F-1 and F-2 are coupled using methods substantially similar to that described by Kishi, et al., Org Lett 4:25 p 4431 (2002) to afford intermediate F-4.
- This coupling is performed in the presence of the chiral oxazole (ER-807363) or, alternatively, in the absence of ER-807363.
- the coupling reaction of F-1 and F-2 proceeds with higher selectivity when performed in the presence of ER-807363.
- Intramolecular Williamson ether formation of F-4 by treating F-4 with potassium hexamethyldisilazide, then furnishes tetrahydropyran F-5 as a mixture of stereoisomers. The stereoisomers are then separated to afford F-5a. The details of these steps are set forth in the Examples infra.
- the present invention provides a compound F-4:
- PG 1 , PG 2 , PG 3 , LG 1 , and R 1 are as defined in general and in subclasses above and herein.
- PG 3 is hydrogen or a suitable hydroxyl protecting group.
- the present invention provides a compound of formula F-4 wherein said compound has the stereochemistry depicted in formula F-4′:
- PG 1 , PG 2 , PG 3 , LG 1 , and R 1 are as defined in general and in subclasses above and herein.
- the present invention also provides a compound F-4a:
- MsO mesylate
- TSS t-butyldimethylsilyl
- OPv pivaloate
- the present invention provides a compound F-5:
- each PG 1 , PG 2 , PG 3 , and R 1 is as defined in general and in subclasses above and herein.
- the present invention provides a compound of formula F-5 having the stereochemistry as depicted in formula F-5′ or F-5a:
- each PG 1 , PG 2 , PG 3 , and R 1 is as defined in general and in subclasses above and herein.
- Scheme IX above shows a general method for preparing an intermediate-F-9 from F-3′and F-6.
- the sulfone intermediate F-6 is treated with n-butyl lithium then with the aldehyde F-3′.
- the resulting diol intermediate F-7 is then oxidized with Dess-Martin reagent to form the ketone-aldehyde intermediate F-8 which is then treated with SmI 2 to afford intermediate F-9.
- SmI 2 SmI 2
- Scheme X above sets forth a general method for preparing the Halichondrin B analogs of the present invention from F-9a (LG 2 is iodo).
- an intramolecular coupling is achieved, by conditions substantially similar to those described at Scheme V above, to form hydroxyl compound F-10.
- the intramolecular coupling is performed in the presence of the chiral oxazole ligand, described herein.
- the addition of the chiral oxazole ligand imparts a higher yield and greater efficiency for the reaction.
- the details of this reaction are set forth in the Examples below.
- Compound F-10 is then oxidized to form F-11.
- the hydroxyl protecting groups of F-11 are removed by appropriate means to afford F-12.
- Halichondrin B analog B-1939 Using the preparation of Halichondrin B analog B-1939 to exemplify, the following Examples describe the synthesis of Halichondrin B analogs using the methods and compounds of the present invention.
- Halichondrin B is prepared by the methods and from the compounds of the present invention including, but not limited to, those analogs of Halichondrin B described in U.S. Pat. Nos. 6,214,865 and 6,365,759, the entirety of which are herein incorporated by reference. Accordingly, it will be appreciated that the synthetic methods described below, by way of example, do not limit the scope of the invention which is defined by the appended claims.
- D-glucurono-6,3-lactone (1 wt., 1 eq.) was combined with ACN (3 vol.) and acetone (9 vol.).
- Catalytic conc. sulfuric acid was added and the system held at reflux for 3 hours.
- the system was checked for dissolution of D-glucurono-6,3-lactone.
- the reaction was cooled to 25° C. and stirred for 15 hours.
- Solid sodium bicarbonate (0.5 wts) was added and the reaction stirred for 3 additional hours. Solids were removed by filtration and the organics were partially concentrated and azeotroped with additional ACN (2 wts).
- ER-806045 was taken into the next reaction without isolation.
- ER-806050 was isolated as a tBuOH solution (2.5 vol.) after concentration at reduced pressure (95% yield).
- the toluene solution (10.1 wt %, 9.9 wts) of ER-806051/52 (1 wt, 1 eq.) was further diluted with additional toluene (3 wts).
- N-Methylmorpholine (0.94 wts, 3.0 eq.) and DMAP (0.075 wts, 0.2 eq.) were added to the toluene solution and the resulting mixture was cooled below 15° C.
- Benzoyl chloride was added keeping the internal temperature below 25° C.
- the reaction was then stirred for 12 hours at 75° C.
- the reaction was cooled to 15° C. and the temperature kept below 25° C. during the 1N HCl (5 vol.) quench.
- AllylTMS (1.03 wts, 4.8 eq.) was premixed with ER-806053/54 (1 wt, 1 eq.), available as a 22 wt % solution in toluene from the previous step (4.55 wts, 1 eq.), and added to the freshly generated Ti(OiPr)Cl 3 .
- the internal temperature during the addition was kept below 30° C.
- the reaction was stirred between 20-30° C. for 2 hours.
- the reaction was cooled to ⁇ 5° C. and quenched with 1N HCl (6 vol.), keeping the internal temperature below 30° C.
- the layers were separated and the organic layer sequentially washed with aqueous NaHCO 3 (5 wt.) and water (3 vol.).
- the organic layer was partially concentrated at reduced pressure (100% crude yield) and further azeotroped with additional toluene (4 vol.).
- the resulting ketone (ER-806058) was dissolved in a final 4 vol. of toluene, checked for water content and used as is in the next reaction.
- ER-806059 was dissolved in 1:1 toluene/CH 3 CN (5 vol.) at room temperature. Filtered TMSI (1.23 wt., 4 eq.) was added, keeping the initial temperature below 40° C. The reaction was heated to 60° C. for 2 hours. The reaction was cooled to ⁇ 15° and quenched with 25% aqueous ammonium hydroxide below 30° C. The reaction contents were stirred overnight and the layers separated. The organic layer was charged with additional toluene (5 vol.) and water (2 vol.). The layers were mixed well and separated.
- ER-806068 (1 wt., 1 eq.) was dissolved in 1 vol. of MeOH. Water (1.5 vol.) and 2 N HCl (1.25 vol., 1 eq.) were added and the reaction stirred at 25° C. The reaction was quenched by inverse addition to 2M NaOH (1.34 vol.) at 10° C. The reaction was diluted with isopropyl acetate (5 vol.), the layers were mixed well and separated. The aqueous layer was back extracted with 5 vol. of isopropyl acetate and the combined organic layers were dried over MgSO 4 (0.5 wt.), filtered, and concentrated at reduced pressure to afford crude diol ER-806063.
- ER-806065 (1 wt., 1 eq.) was dissolved in heptane, isooctane, or IPA (10 vol.) The solution was cooled below ⁇ 60° C. ( ⁇ 10° C.). Ozone was bubbled through the solution at low temperature until the solution retained a blue color. Nitrogen was purged through the solution for 15-30 minutes, and the reaction warmed to 5° C. while the nitrogen flush was continued. 7-15 wt. % Lindlar Catalyst (5% Pd on CaCO 3 poisoned with Pb, 0.1 wt.) was added. The reactor head was purged several times with nitrogen, evacuated, and placed under 1 atmosphere H 2 (g).
- a reactor was charged with pre-rinsed Amberlyst 15 (0.05 wt.) and water (4.63 vol.) and cooled to an internal temperature of 0-5° C.
- the reactor was charged with 2,3-dihydrofuran (1 wt., 1 eq.) and stirred for 1.5 hours maintaining internal temperature around 5° C.
- a second reactor was charged with water (4.63 vol.) and heated to an internal temperature of 35° C.
- the same reactor was charged with tin powder (2.2 wt., 1.3 eq.), distilled 2,3-dibromopropene (3.71 wt., 1.3 eq.), and 48% hydrobromic acid (0.002 vol.), respectively.
- the second reactor was charged with 2,3-dibromopropene portion-wise (9 ⁇ 0.37 wt.) while maintaining the internal temperature below 45° C. After complete addition, the contents of the second reactor were stirred at an internal temperature of 35° C. for an additional 60 minutes. The filtered contents of the first reactor were charged into the second reactor at a rate such that internal temperature did not exceed 45° C. After complete addition, the heat source was removed and the second reactor was charged with Celite® 545 (2.0 wt.) and the resulting mixture stirred for 30 minutes.
- the heterogeneous mixture was filtered through a Celite® 545 pad (2.0 wt.) and the cake washed with additional water (5 vol.). All filtrates were combined into a reactor and charged with concentrated hydrochloric acid (1.5 vol.) until the cloudy solution becomes clear. With vigorous stirring, the reactor was charged with sodium chloride (3.6 wt.) and the layers allowed to partition. The organic layer was separated and set aside. The aqueous layer was extracted with n-butanol (20 vol.). The aqueous layer was drained and the reactor charged with the organics from the first separation. The organics were washed with concentrated sodium bicarbonate (24 vol.), followed by a back extraction of the aqueous layer with n-butanol (20 vol.).
- a reactor was charged with imidazole (0.65 wt., 2 eq.), ER-806909 (1 wt., 1 eq.), and anhydrous DMF (4.04 vol.). With stirring, the reactor was cooled to an internal temperature of 0° C. and then with tert-butylchlorodiphenylsilane (1.25 wt., 0.95 eq.) at a rate such that internal temperature did not exceed 15° C. While maintaining the internal temperature ⁇ 15° C., the reaction was stirred for an additional 1 hour. The reactor was charged with water (3.2 vol.) and n-heptane (6.4 vol.). The mixture was stirred for 5-15 minutes and the layers allowed to separate.
- the enantiomers of ER-806545 were separated via Simulated Moving Bed (SMB) chromatography to yield ER-808373 (0.55 wt., 0.55 eq.) and ER-806721 (0.45 wt., 0.45 eq.) as yellow oils.
- SMB chromatography protocol used to separate the enantiomers of ER-806545 is as follows.
- the enantiomers of ER-806545 were separated using the above protocol in the following manner.
- 10 L of 36 g/L ER-806545 in mobile phase was pumped (Silog model Chemtech) through a 142 mm diameter 0.45 ⁇ m pore size nylon filter (Cole-Parmer # 2916-48) and into the Feed tank.
- the Eluant tank was filled with 36L mobile phase that has been filtered through an in-line 45 mm diameter 1 ⁇ m glass fiber filter (Whatman GFC), additional vol. were added throughout the run.
- the internal temperature of the SMB apparatus was adjusted to 27° C.
- the Feed and Eluant inlets were both connected to the Eluant tank.
- the Feed and Eluant pumps were primed and purged with mobile phase solvent.
- the SMB apparatus column switching was initiated, the pumps were turned on and the flow rates were gradually increased to full speed while maintaining absolute flow rate differences between each pump. Once fall speed was achieved the Raffinate and Extract flow rates were measured and adjustments to pump flow rates were made to correct for deviations in pump specifications.
- the Feed pump (Pump 1) was reduced to 0 mL/min, the inlet reconnected to the Feed tank, the pump primed with Feed solution and then the flow rate gradually increased back to full operating speed.
- the Raffinate and Extract outlets were collected into separate tanks and samples of each of each were acquired every 2 hours. The samples were monitored for chiral purity by analytical HPLC using the HPLC method set forth below. Adjustments to the flow rates of Pumps 2, 3 and 4 as well as to the tact time were made to afford the desired outlet purities.
- the Feed pump was once again reduced to zero flow rate and connected to the Eluant tank.
- the Feed pump was brought back to full speed and the system was allowed to wash for 20 minutes.
- the Raffinate and Extract outlets were maintained for 10 minutes (10 tacts) during the wash period and, for the remainder of the wash, the outlets were collected into a separate tank.
- the column wash was eventually concentrated and added to the Feed on subsequent runs.
- the collected Extract (ER-806721) at the end of each run was pooled with material collected from the same starting material lot and the final pooled lot was analyzed again for chiral purity by the analytical HPLC method described in Table 1 below. The same procedure was applied to the collected Raffinate (ER-808373).
- a reactor was charged with triphenylphosphine (0.7 wt., 1.2 eq.), p-nitrobenzoic acid (0.45 wt., 1.2 eq.), ER-808373 (1 wt., 1 eq.), and anhydrous toluene (8 vol.).
- the reaction was cooled to internal temperature of 0° C. and DEAD (1.17 wt., 1.2 eq.) was slowly added at a rate such that the internal temperature did not exceed 7° C.
- n-Heptane 3.3 vol. was added and the mixture cooled to an internal temperature 10° C. then stirred for 30-40 minutes. The resulting precipitate was removed by filtration.
- the filter-cake was washed with n-heptane (3.3 vol.), TBME (0.55 vol.), n-heptane (1.1 vol.), and MTBE (0.55 vol.), respectively. All filtrates were combined and concentrated in vacuo.
- the crude concentrate was dissolved in THF (8 vol.) then water (0.8 vol.) and lithium hydroxide dihydrate (0.18 wt., 2 eq.) were added. The mixture was stirred at ambient temperature then n-heptane (3.3 vol.) was added and stirred for 5 minutes. Water (2.2 vol.) and n-heptane (3.3 vol.) were added, the biphasic mixture was stirred for 5 minutes, and the layers were allowed to partition.
- a reactor was charged with ER-806721 (1 wt., 1 eq.) and anhydrous dichloromethane (4.2 vol.). The reaction was cooled to an internal temperature of 0-5° C., then triethylamine (0.34 wt., 1.5 eq.), p-toluenesulfonyl chloride (0.51 wt., 1.2 eq.), and 4-(dimethylamino)-pyridine (0.001 wt., 0.25 eq.) were added. The resulting mixture was stirred at ambient temperature for 48 hours then water (1.8 vol.) and dichloromethane (1.8 vol.) were added. After sufficient mixing, the organics were separated and concentrated.
- the concentrate was dissolved in MTBE (1.8 vol.) and washed with brine (1.8 vol.). The organic layer was separated and set aside. The aqueous layer was back extracted with MTBE (1.8 vol.) then all organics were combined and concentrated in vacuo.
- the crude oil was filtered through a plug of SiO 2 (70-230 mesh, 1 wt.) eluting with MTBE (7 vol.) and the filtrates were concentrated in vacuo.
- the concentrate was dissolved in IPA (5 vol.) and water (0.25 vol.) was added. The resulting mixture was cooled to an internal temperature of 15° C. and then seeded with ER-807204. After seeding, the mixture was cooled to an internal temperature of 0° C.
- a reactor was charged with 21% sodium ethoxide in ethanol (2.97 wt., 0.9 eq.). The solution was heated to an internal temperature of 65° C. then diethyl malonate (3.24 wt., 2 eq.) was added at a rate such that the internal temperature did not exceed 70° C. The mixture was stirred for 30 minutes and then ER-806906 (1 wt., 1 eq.) was added over 3-5 hours. Upon complete addition, the reaction was stirred for 60 minutes and then cooled to an internal temperature of 50° C. Concentrated hydrochloric acid (0.84 wt., 1.05 eq.) was added at a rate such that internal temperature did not exceed 65° C.
- a reactor was charged with LHMDS 1.0 M in toluene (6.61 wt., 1.04 eq.) and cooled to an internal temperature of ⁇ 75° C.
- ER-805552 (1 wt., 1 eq.) was dissolved in anhydrous THF and added to the reactor at a rate such that internal temperature did not exceed ⁇ 70° C. Upon complete addition, the resulting mixture was stirred for 30 minutes.
- a second reactor was charged with anhydrous THF (2.5 vol.) and methyl iodide (1.27 wt., 1.25 eq.) and cooled to an internal temperature of ⁇ 75° C.
- a reactor was charged with N,O-dimethylhydroxylamine HCl (1.05 wt., 1.5 eq.) and anhydrous CH 2 Cl 2 (8.1 vol.) and cooled to an internal temperature of 0° C. 2 M trimethylaluminum in toluene (3.93 wt., 1.5 eq.) was added at a rate such that internal temperature did not exceed 5° C. The reaction was stirred for an additional 10 minutes and ER-806724 was added at a rate such that internal temperature did not exceed 5° C. The reaction was diluted with CH 2 Cl 2 (15 vol.) then inverse quenched into 1.3 M sodium tartrate (20 vol.) at an internal temperature of 0° C.
- a reactor was charged with ER-806753 (1 wt., 1 eq.), CH 2 Cl 2 (5 vol.) and NMO-50% in water (0.8 wt., 1.1 eq.). The mixture was cooled to an internal temperature of 10° C. and then 0.197 M OsO 4 in toluene (0.06 vol., 0.004 eq.) was added. Sodium sulfite (0.1 wt., 0.25 eq.) and water (0.85 vol.) were added and the reaction stirred for 1 hour. The mixture was diluted with brine (0.85 vol.) and the organics were concentrated in vacuo to approximately 1 ⁇ 3 vol.
- a second reactor was charged with sodium periodate (1.3 wt., 2 eq.) followed by THF (2.5 vol.).
- the concentrated diol was added at a rate such that the internal temperature did not exceed 30° C.
- the resulting mixture was stirred at room temperature.
- Water (1.25 vol.), MTBE (7 vol.) and brine solution (1.25 vol.) were added and the layers separated. The organics were washed a second time with a mixture of brine solution (1 vol.) and saturated sodium bicarbonate (1 vol.).
- a reactor was charged with ER-806629 (1.53 wt., 3.1 eq.) and THF (10.5 vol.) and the solution was degassed with nitrogen sparge for 60 minutes.
- a second inserted reactor was charged with ER-807204 (1 wt., 1.0 eq.), ER-806754 (0.66 wt., 1.2 eq.) and THF (2.7 vol.) and this solution was degassed with argon sparge for 45 minutes.
- the reactor containing ER-806629 was charged with CrCl 2 (0.63 wt., 3.1 eq.) and followed by Et 3 N (0.52 wt., 3.1 eq.). The dark green suspension was stirred at an internal temperature of 30 to 35° C.
- a reactor was charged with ER-807524 (1 wt., 1 eq.) and anhydrous THF (1.25 vol.). The mixture was cooled to an internal temperature of ⁇ 20° C. and 3 M methyl magnesium chloride (0.59 vol., 1.2 eq.) was added at a rate such that the internal temperature did not exceed 0° C. Upon complete addition, the mixture was warmed to an internal temperature of 0° C. over 2 hours. The reaction mixture was inverse quenched into semi-saturated ammonium chloride (2.62 vol.) and the resulting mixture diluted with TBME (2 vol.) with vigorous mixing. The aqueous layer was discarded and the organics washed with brine (2 vol.) then concentrated in vacuo. The crude product was purified via SiO 2 column chromatography to yield ER-807525 (0.79-0.82 wt., 0.85-0.88 eq.) as yellow oil.
- a reactor was charged with ER-807525 (1 wt., 1 eq.), N-phenylbistrifluoromethanesulfonamide (0.59 wt., 1.1 eq.), and anhydrous THF (4.1 vol.) and the mixture cooled to an internal temperature of ⁇ 75° C.
- 0.5 M KHMDS in toluene (2.75 wt., 1 eq.) was added at a rate such that internal temperature did not exceed ⁇ 60° C. then the reaction was warmed to ⁇ 20° C. over 2 hours.
- the reaction was quenched with semi-saturated NH 4 Cl (2.4 vol.) at a rate such that internal temperature did not exceed 0° C.
- ER-807527 was separated by preparative HPLC chromatography and the desired fractions concentrated to yield ER-806730 (0.56 wt., 0.56 eq.) as a clear yellow oil.
- the preparative HPLC chromatography protocol used to isolate ER-806730 is as follows.
- ER-807527 was first diluted to 0.1 g/ml in the mobile phase and filtered under vacuum through a 47 mm, 1 ⁇ m pore size, glass fiber filter (Whatman GFC). The filtrate was then concentrated under vacuum on a rotary evaporator. Flow on the SD-1 HPLC pump A (primed and purged with mobile phase) was initiated and the flow rate gradually increased to 140 mL/minute. The system was washed until the UV and RI detectors achieved a stable baseline. The RI detector reference flow cell was flushed with fresh mobile phase.
- Chromatography of 8 g injections of ER-807527 was accomplished by diluting the current lot of ER-807527 to a concentration of 0.8 g/mL in the mobile phase. Injecting 10 mL aliquots of the dissolved material and collecting the eluant corresponding to the ER-806730 peak approximately beginning at the peak apex approximately 24 minutes and continuing to 35 minutes. Subsequent injections and fraction collection were continued until the starting material is exhausted.
- a reactor was charged with ER-806730 (1 wt., 1 eq.) and anhydrous dichloromethane (4.8 vol.) and cooled to an internal temperature of 0° C. 2,4,6-Collidine (1.16 wt., 4 eq.) and DMAP (0.03 wt., 0.1 eq.) were added and the resulting mixture stirred for 15 minutes and then trimethylacetyl chloride (0.3 wt., 1.05 eq.) was added at a rate such that internal temperature did not exceed 10° C. Water (3 vol.) was added and the mixture stirred for 15 minutes. TBME (10 vol.) was added and the mixture stirred for an additional 10 minutes.
- the organic layer was washed with 1N HCl (10 vol.) washing until a negative result for 2,4,6-collidine is obtained then with water (5 vol.), saturated sodium bicarbonate (5 vol.), and saturated brine (5 vol.), respectively.
- the organic layer was concentrated in vacuo and the concentrate purified via SiO 2 column chromatography to yield ER-806732 (1.02 wt., 0.85 eq.) as a yellow oil.
- a reactor was charged with ER-806732 (1 wt., 1 eq.) and anhydrous THF (2.35 vol.) and cooled to an internal temperature of 0° C.
- Triethylamine (0.22 wt., 1.1 eq.) was added followed by methanesulfonyl chloride (0.24 wt., 1.05 eq.) at a rate such that internal temperature did not exceed 10° C.
- the reaction was stirred at an internal temperature of 0° C. then n-heptane (3.4 vol.) was added with vigorous stirring and the layers were allowed to partition.
- PPh 3 (5 eq, 2.3 wt), pyridine (10 eq 1 vol), and NIS (3.0 eq, 1.1 wt) were added to the solution of 16 (1 wt) in THF (10 v). 20% wt/wt aqueous citric acid (10 eq, 14 wt) was then added and the resulting mixture allowed to stir for 10 minutes. The reaction was diluted with heptane (10 v) and the aqueous layer separated. The organic layer was washed with water (5 v), 10% wt/v aqueous sodium thiosulfate (5 v), water (5 v) and brine (5 v). The solvent was exchanged with EtOH and concentrated to 5 v. Water (10 v) was added and the resulting precipitate was collected by filtration to obtain 17 (0.65 wt) as a white solid.
- AlMe 3 (2 M in toluene, 1.5 eq, 1.5 v) was added to a suspension of dimethylhydroxylamine hydrogen chloride (1 wt) in CH 2 Cl 2 (2.5 v) at 0° C.
- the reaction mixture was then added to aqueous sodium tartrate (1.3 M, 20 v) keeping the temperature below 10° C.
- the layers were allowed to partition, were separated, and the organic layer was dried with Na 2 SO 4 (5 wt).
- the resulting suspension was filtered and the filtrate concentrated.
- Methyl magnesium chloride (3.0 M, 59 wt, 1.2 eq) was is added to a solution of 21 (1 wt) in anhydrous THF (1.11 wt, 1.25 v) at a rate that maintained the reaction temperature below 0° C. After stirring at 0° C., the reaction was reverse quenched into saturated ammonium chloride (2.5 v) and water (2.3 v). The resulting mixture was diluted with MTBE (10 v) and stirred vigorously. The aqueous layer was separated and the organic layer washed with brine (2.5 v) and concentrated to provide 22 (0.84 wt).
- Example 4a provides an alternate method of preparing compounds of formula A, an intermediate to F 2, using the general scheme set forth at Scheme V above. This method uses ER-812935 as an intermediate as prepared according to Example 3 (compound 4), above.
- ER-812935 (1 wt) was dissolved in THF (10 v) and cooled to 0° C. LAH (1.0 M in THF, 0.70 eq, 2.0 v) was added keeping the temperature below 5° C. While stirring vigorously, excess reagent was quenched with water (0.078 v) keeping the temperature below 5° C. While maintaining the vigorous stirring, NaOH (15% wt/wt in water (0.078 v)) was added followed by water (0.18 v). After adding Celite® (2 wt), the suspension was filtered and the cake rinsed with THF (5 v). The solution of ER-817633 (0.92 wt, calcd. based on 100% conversion) was concentrated to 5 v and used directly in the next stage.
- ER-818950 was dissolved in acetic acid (5 v) and hydrogen chloride (1.0 M, 1 eq, 3 v) was added and the reaction was stirred at ambient temperature. The reaction was cooled to 0° C. and NaOH (50% wt/wt, 30 eq, 7 wt) was added at a rate that maintained the temperature below 10° C. The solution was extracted with heptane (2 ⁇ 10 vol). The aqueous phase was saturated with NaCl and extracted with ACN (2 ⁇ 10 v). The combined ACN extracts were concentrated and solvent exchanged with EtOAc by atmospheric distillation to provide a solution of ER-817664 in EtOAc (3 v). Salts were filtered from the hot solution which was then cooled to 0° C. The suspension was filtered to provide ER-817664 as a white crystalline solid.
- Example 4b provides an alternate method of preparing compounds of formula F-2 using the general scheme set forth at Schemes Vb and Vc above. This method uses ER-817664 as an intermediate as prepared according to Example 4a, above.
- ER-817664 (1 wt) was dissolved in ACN (10 v), the suspension was cooled to 0° C. and 2-acetoxy-2-methylpropanyl bromide (4.0 eq, 2.4 v) was added followed by the addition of H 2 O (1.0 eq., 0.07 v). The resulting mixture was stirred at 0° C. for 2 hours. NaHCO 3 (sat. aqueous, 8.0 eq. 40 v) was added slowly at 0° C. The resulting mixture was stirred at room temperature for 30 minutes prior to extraction with MTBE (2 ⁇ 20 v). The organic layer was washed with brine (5 v) and concentrated to give the product as colorless oil.
- ER-818638 (1 wt) and LiCl (2.0 eq, 0.35 wt) was stirred in ACN (8.7 v). Hunig's base (1.5 eq) was added at 25° C. 1 N HCl (5 v) was added and the mixture was extracted with MTBE (10 v). The organics were concentrated to provide ER-818640 which was used as is in the next step.
- the starting lactone as depicted immediately above, was dissolved in DCM (50 v), Et 3 N (5.0 eq.), DMAP (0.3 eq.) and TBDPSCl (1.5 eq.) were added separately at ambient temperature under N 2 , and the resulting solution was stirred at ambient temperature for 2-3 hours. Upon the completion of the reaction, the mixture was diluted with TBME (100 v), washed with sat. aq. NaHCO 3 solution (10 v), H 2 O (10 v) and brine (10 v). The organic layer was concentrated and purified by flash chromatography to give the product as colorless oil.
- Example 4c provides another alternate method of preparing compounds of formula F-2 using the general scheme set forth at Scheme VII above. This method uses ER-811510 as an intermediate as prepared according to Example 3, above where acetone is used instead of cyclohexanone.
- ER-811510 (1 wt, 1 eq) was dissolved in methylene chloride (6.3 v) and cooled to ⁇ 5° C. Pyridine (0.41 vol, 1.1 eq) was added followed by bromoacetyl bromide (0.44 vol, 1.1 eq) while keeping the temperature below 0° C. The reaction was stirred at I 1 hour and warmed to room temperature. Water (8 vol) was added and the layers separated. The organic layer was washed sequentially with aqueous copper sulfate pentahydrate (1.0 M, 10 vol), water (8 vol), and brine (10 vol) then dried over magnesium sulfate, filtered and concentrated in vacuo to afford ER-812771 as a tan solid.
- ER-812771 (1 wt, 1 eq) was dissolved in acetonitrile (6 v) and triphenylphosphine was added and the reaction heated at 50° C. for 45 minutes. The reaction was cooled to ⁇ 10° C. then 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU, 0.35 vol, 0.8 eq) was added. The reaction was stirred for 15 minutes, heated to 80° C. for 45 minutes then cooled to ambient temperature. Ammonium chloride (saturated aqueous, 10 vol) was added and the aqueous layer extracted with ethyl acetate (3 ⁇ 10 v). The combined organic layers were dried over magnesium sulfate and concentrated in vacuo. The crude product was purified by chromatography to afford ER-812772 as a white solid.
- DBU 1,8-diazabicyclo[5.4.0]undec-7-ene
- ER-812772 (1 wt, 1 eq) was dissolved in ethyl acetate (8 v). 10% Palladium on carbon (0.05 wt, 0.01 eq) was added, the reaction purged with nitrogen then stirred under hydrogen atmosphere for 2 hours. The catalyst was removed by filtration through Celite with ethyl acetate washed. The combined filtrates were concentrated in vacuo to afford ER-812829 as a white solid.
- the mixture was heated to reflux for at least 1 hour before it was cooled to and aged at 85° C. for 3 hours, at 80° C. for 3 hrs and then cooled to 40° C. in 12 hrs.
- the product was collected by filtration and the cake washed with heptane (2 vol).
- the filter cake was dried by airflow to afford ER-805715 (1.48 wt) in 78% of yield.
- ER-805715 (1 wt., 1 eq.) was charged to reaction vessel and dissolved in anhydrous THF (3.34 vol.) and anhydrous toluene (2.5 vol.). The mixture was cooled to ⁇ 15 to ⁇ 10° C. DIBALH (1.5M in toluene, 2.4 vol., 1.2 eq.) was added over 1 hour and the mixture stirred for 15-30 minutes at ⁇ 15 to ⁇ 10° C. The reaction was inverse quenched into KNa-Tartrate solution (1 wt. KNa Tartrate in 2.9 wt. water) at 10° C. and the resulting mixture allowed to warm to room temperature and stir for 4 hours. The mixture was filtered then the layers separated and extracted with MTBE (2 vol.). The organic layers were combined and the solvents removed in vacuo to afford ER-805814. Yield 100%, (1.02 wt.).
- ER 805814 (1 wt.) was dissolved in anhydrous THF (3.3 vol.) and treated with (methoxymethyl)triphenylphosphonium chloride (2.11 wt., 2.1 eq.). The reaction mixture was heated to 28-32° C. then a solution of KOtBu (0.66 wt., 2 eq.) in anhydrous THF (2.64 vol.) was added over 100-140 minutes, maintaining reaction temperature 30-35° C. After 5 hours, the reaction was cooled to 20-25° C., MTBE (5.11 vol.) was added and the mixture stirred. Brine (3 wt.) and water (3 wt.) were added (exothermic at start of addition, controlled by bath @20-25° C.).
- a solution of t-BuOK (0.989 wt, 3 eq) in THF (4 wt) was added to a suspension of (methoxymethyl)triphenylphosphonium chloride (3.12 wt, 3.1 eq) in THF (1.78 wt), maintaining the reaction temperature between 0-10° C.
- the addition vessel was rinsed with THF (2 ⁇ 0.7 wt).
- a solution of ER-805814 (1 wt, 1 eq) in THF (1.42 wt) was added to the reaction, maintaining 0-10° C.
- the addition vessel was rinsed with THF (2 ⁇ 0.7 wt). The mixture was stirred at 20-30° C. overnight and 30-35° C.
- ER-805815 In an alternative method for workup of ER-805815, the crude organic layer that is produced following brine wash and concentration is treated with MTBE (2.86 wt) and celite (0.5 wt). After stirring for 2.5 h, heptane (1.46 wt) was added over 2 hrs and the mixture stirred overnight. The precipitate was filtered. The filter cake was washed with MTBE/Heptane (1:1) (5 wt). The filtrate was concentrated in vacuo until the volume was decreased to about 3 volume. The residue was dissolved in MeOH (2 wts) and H 2 O (6 wts). The mixture was extracted with heptane/MTBE (5:1) (3*6 wts). The organic layer was separated and concentrated to provide ER-805815 which was used as is for the following step.
- ER-805815 (1 wt) was dissolved in acetone (2.4 vol) and water (0.4 vol). N-Methylmorpholine N-oxide (0.62 wt, 2 eq) was added and the mixture cooled to 0-5° C. OSO 4 (0.15M in water, 0.065 vol) was added and the reaction was maintained at 0-5° C. The reaction mixture was stirred at 0-5° C. for 12 hours. Water (0.2 vol) was added over 1 hour at 0-2° C. The mixture was stirred for one hour at 0-5° C. The product was filtered and the solids washed twice with pre-cooled (0-5° C.) acetone/water (1/1, v/v, 2 ⁇ 0.7 vol). The product was dried to afford ER-805816 (0.526 wt, 52% yield, residual Os ⁇ 17 ppm).
- ER-805816 In an alternate method for preparing ER-805816, a solution of ER-805815 (1 wt, 1 eq) in acetone (4 wt) was charged into a four-necked flask, then water (0.5 wt) was added at ambient temperature. To the mixture was added anhydrous N-methylmorpholine-N-oxide (0.38 wt, 1.2 eq). Potassium osmate dihydrate (0.003 wt, 0.003 eq) was added portion-wise at 25 to 35° C. while cooling with water. The mixture was kept at this temperature for 4 hours.
- the precipitate was filtered and washed with water (1.53 wt) to afford the crude wet cake (1.05 wt).
- the crude ER-805816 (1.05 wt) was added to water (2.81 wt) and stirred for 2 hours at about 25° C.
- the precipitate was filtered and washed with water (1.4 wt) and methanol (0.45 wt) to afford the crude ER-805816 (0.736 wt).
- ER-805816 (0.56 wt) was dissolved in acetone (1.76 wt) at 45 to 55° C. To the solution was added active carbon (0.027 wt) and stirred at same temperature for 0.5 hour. The mixture was filtered and the cake was washed with hot acetone (0.214 wt). The filtrate was kept at 45 to 50° C. and water (0.83 wt) was added over 10 minutes and temperature was kept at 40 to 50° C. during water addition. The mixture was cooled to 0 to 5° C. and stirred for 1.5 hours.
- ER-805816 (1 wt) was slurried in acetic acid (0.89 vol, 5.8 eq) and acetic anhydride (3.57 wt, 13 eq). Anhydrous ZnCl 2 (0.2 wt, 0.54 eq) was added. Reaction mixture was stirred for 24 hours 18-22° C. Reaction was quenched into ice (5 wt) and water (5 vol). EtOAc (10 vol) was added with stirring and the aqueous layer is separated. The aqueous layer was back extracted with EtOAc (10 vol). The combined organic layers were washed sequentially with brine (10 vol), 5% aqueous NaOAc (6 vol), and brine (6 vol). The organic layer was concentrated.
- ER-805819 In an alternate method for preparing ER-805819, zinc chloride (0.2 wt, 0.54 eq), acetic anhydride (2.75 wt, 10 eq), and acetic acid (1 wt, 6 eq) were combined. The mixture was cooled to 15-20° C. ER-805816 (1 wt, 1 eq) was added, maintaining the internal temperature at 15 to 30° C. The mixture was then stirred at 35-40° C. for 6 hours. The reaction mixture was cooled below 25° C. Methanol (3.2 wt, 4 vol) was added drop-wise maintaining reaction temperature below 25° C. Heptane (2.7 wt, 4 vol) was added. Water was added (4 wt, 4 vol) maintaining reaction temperature below 25° C.
- the mixture was stirred for 15 minutes, and then the phases were separated.
- the lower layer was washed twice with heptane (2.7 wt, 4 vol) and the heptane layers were discarded.
- the lower layer was extracted twice with toluene (6.1 wt, 8 vol).
- the combined toluene layers were washed twice with 17 wt % potassium bicarbonate aqueous solution (0.82 wt KHCO3 in 3.98 wt water, 4.36 vol), twice with water (4 wt), and concentrated.
- Methanol (3.95 wt, 5 vol) was added at 25-30° C. and the mixture stirred for 10 minutes. Water (0.3 wt) was added at 25-30° C. The mixture was cooled to 0° C.
- ER-805819 (1 wt) was dissolved in anhydrous acetonitrile (15 vol) and treated with methyl 3-trimethylsilylpent-4-eneoate (0.93 vol, 2 eq). The reaction mixture was cooled to 0-5° C. and BF 3 ⁇ OEt 2 (0.54 vol, 1.95 eq) was added over 5 minutes, maintaining reaction temperature between 0-5° C. Reaction mixture was stirred 0-5° C. for 12 hours. Reaction was quenched into saturated sodium bicarbonate (20 vol) with vigorous stirring. Extracted twice with EtOAc (2 ⁇ 8 vol). The combined organics were washed with brine (12 vol) and concentrated to give ER-805821 (1 wt, 88% yield, use as is).
- ER 805819 (1 wt, 1 eq) and ER methyl 3-trimethysilylpent-4-eneoate (0.93 vol, 2 eq) were dissolved in anhydrous acetonitrile (5.46 wt, 7 vol).
- the reaction mixture was cooled to 0-5° C. and BF 3 ⁇ -OEt 2 (0.54 vol, 1.95 eq) was added over 5 minutes, while maintaining reaction temperature between 0-5° C.
- the reaction mixture was stirred at 0-5° C. for 20 hours then heptane (5.47 wt, 8 vol) was added at 0-5° C.
- ER-805821 (1 wt) was dissolved in anhydrous THF (8.4 vol) and anhydrous MeOAc (2 vol). Triton B(OH) (3.6 vol) was added over 2 minutes, reaction maintained 17-23° C. Reaction was stirred for 1.5 hour. Reaction mixture was filtered. The filtrate was concentrated and passed through a pad of SiO 2 (5 wt, EtOAc, 20 vol). The filtrate was washed with brine (2.2 vol) and evaporated to give ER-805822 (0.54 wt, 72% yield).
- ER-805821 (1 wt, 1 eq, 11.18 g, 21.81 mmol) was dissolved in anhydrous MTBE (4.4 wt, 6 vol.) and cooled to 0-5° C.
- NaOMe 28 wt % in MeOH, 0.564 wt, 1.5 eq
- the reaction was quenched by addition of acetic acid (0.188 wt, 1.6 eq.), maintaining 0-5° C. during addition.
- ER 805822 (1 wt) was dissolved in ethyl acetate or another appropriate solvent (5 vol) and water (5 vol).
- NaIO 4 (0.58 wt, 1.05 eq) is added portionwise over 30 min to 1 hour, maintaining reaction temperature 0-10° C. Reaction is stirred for up to 2 hours.
- the reaction mixture was treated with NaCl (1 wt) and stirred for 30 min at 0 to 10° C.
- the reaction mixture was filtered and the cake is rinsed with ethyl acetate (2 vol).
- the phases were separated and the lower layer extracted with EtOAc (5 vol) three times.
- the combined organic layer was washed with 20% aqueous NaCl (5 wt).
- the organic layer was concentrated to give ER 804697 (1 wt).
- the residue was dissolved in toluene (2 vol) and the solution concentrated.
- the residue was dissolved in acetonitrile (7 vol) and used for the next step.
- NiCl 2 (0.025 wt) and CrCl 2 (2.5 wt) were charged to reaction vessel under inert atmosphere.
- Anhydrous dichloromethane (5 vol) was charged. Stirring was initiated and the mixture was cooled to 0-3° C.
- Anhydrous DMSO (6.7 vol) was added with vigorous stirring over 45 minutes, maintaining temperature below 20° C.
- ER-804697 (1 wt) was dissolved in anhydrous dichloromethane (1 vol) and charged to the reaction vessel.
- the resulting mixture was warmed to 25° C. and 1-bromo-2-trimethylsilylethylene (2.58 wt) was added neat over 20 minutes. The reaction temperature was maintained below 45° C.
- this reaction was performed in the presence of the chiral ligand ER-807363 in a manner substantially similar to that described for the preparation of ER-118047, infra.
- DMSO (7 vol.) and MeCN (7 vol) were degassed and cooled to 0-10° C.
- the solution was treated portionwise with CrCl 2 (10 eq, 3.47 wt) and NiCl 2 (0.1 eq, 0.037 wt) such that the internal temperature did not exceed 20° C.
- a solution of ER-804697 (1 wt, 1 eq) in MeCN (7 vol) and 1-bromo-2-trimethylsilylethylene (5 eq, 2.5 wt) were added dropwise at 0-10° C., not allowing the internal temperature to exceed 15° C.
- the reaction mixture was stirred at 5-15° C. overnight.
- the reactor was charged with layer 1, methanol (2.8 wts), and MTBE (2.8 wts). The mixture was stirred overnight. The lower layer was separated and discarded. The upper layer was treated with layer 2. The mixture was stirred for 1 hour and the lower layer was separated and discarded. The upper layer was treated with layer 3 and heptane (4.8 wts). The mixture was stirred for 1 hour and the lower layer was separated and discarded. The upper layer was drained and saved (organic 2). The reactor was charged with layer 3, MTBE (0.8 wts), and heptane (2.7 wts). The mixture was stirred for 1 hour and the lower layers was separated and discarded. The upper layer was combined with organic 1 and organic 2.
- ER 804698 (1 wt, 1 eq) was treated with AcOH (4.2 wts) and water (4.2 wts). The mixture was heated to 90-97° C. for 100 min. The mixture was cooled to below 15° C. then washed with heptane (2 ⁇ 2.7 wts) twice below 15° C. After phase separation, a mixture of 20 wt % aqueous KHCO 3 solution (7.7 wts, 35 eq) and MTBE (5.95 wts) was added dropwise to the lower layer such that temperature does not exceed 15° C.
- ER-807023 (1 wt, 1 eq) and MTBE (7.43 wts) were charged to a reactor under a nitrogen atmosphere.
- 2,6-lutidine (2.15 wts, 7.5 eq).
- TBSOTf (2.47 wts, 3.5 eq) at 0° C.
- MeOH (0.21 wts, 2.5 eq.) and water (14.8 wts) were added dropwise sequentially to the reaction mixture, maintaining temperature below 30° C.
- a pre-dried glass lined reactor was charged with triphosgene (1 wt., 1 eq.) and anhydrous THF (2 vol.) and was cooled to an internal temperature of ⁇ 10° C.
- a second pre-dried glass lined reactor was charged with ER-807244 (1.27 wt., 2.5 eq.) and anhydrous THF (3 vol.) then cooled to an internal temperature of ⁇ 10° C.
- the contents of the first reactor were transferred into the second reactor at a rate such that internal temperature did not exceed 15° C.
- the reaction was stirred at an internal temperature of 0° C. for 1 hour and then gradually warmed to 25° C.
- MTBE (2.6 vol.), was added followed by process water (2 vol.) at a rate such that the internal temperature did not exceed 35° C.
- the phases were allowed to partition and the aqueous phase separated. All organics were combined with water (0.7 vol.) and the aqueous phase discarded.
- the MTBE was distilled to a level of ⁇ 2 vol. at atmosphere pressure to constant bp 55° C. and KF ⁇ 500 ppm.
- ER-806629 or ER-807363 (1.7 wt., 0.57 eq.) as a crystalline solid.
- Reactor 2 was charged with triethylamine (0.62 wt, 3.55 eq) at a rate such that internal temperature did not exceed 45° C. After complete addition, an internal temperature of 30° C. was maintained for 1 hour. After 1 hour, reactor 2 was cooled to 0° C. and charged in an inert fashion with NiCl 2 (0.02 wt, 0.1 eq), followed by the contents of reactor 1 and the reaction was warmed to rt. Reactor 2 was cooled to an internal temperature of 0° C. and then ethylenediamine (1.2 vol, 10 eq) was added at a rate such that the internal temperature did not exceed 10° C. Note: An exotherm was observed.
- the ER-808227/THF solution from the previous step was analyzed via KF analysis. If KF ⁇ 1000 ppm, then proceeded. If KF 1000 ppm KF>1000 ppm, azeotroped in vacuo with anhydrous THF (4.1 vol.). Repeated azeotrope until specification was met. The final solution meeting specifications contained the dissolved crude ER-808227 in anhydrous THF (4.1 vol.). Once the specification was met, an appropriately sized inerted reactor was charged with anhydrous THF (106 vol.) and the ER-808227/THF solution from the previous step.
- the reactor was cooled to an internal temperature of ⁇ 15 to ⁇ 20° C., then 0.5 M KHMDS in toluene (9.1 wt., 3.0 eq.) was added at a rate such that internal temperature did not exceed ⁇ 12° C. Approximately 4.5 eq. KHMDS was necessary to drive the reaction to completion.
- the reaction was reverse quenched into semi-saturated ammonium chloride (40 vol.) at an internal temperature of 0° C. n-Heptane (80 vol.) was added, stirred for 2-5 minutes, and then allowed to partition.
- the crude ER-806746 was purified via SiO 2 column chromatography to yield ER-804027 (1.16 wt., 0.55 eq.) as a clear yellowish oil.
- the chromatography was performed as follows: the column was first flushed with sufficient MTBE to remove water then flushed with heptane to remove the MTBE.
- the ER-806746 was loaded onto the column as a solution in heptane then eluted from the column with heptane/MTBE (5:1) then heptane/MTBE (4:1) with the fractions monitored at 230 nm by UV detector.
- a reactor was charged with ER-804027 (1 wt, 1 eq) and anhydrous dichloromethane (7.6 vol). The reactor was cooled to an internal temperature of ⁇ 78° C. and then 1 M DIBALH in dichloromethane (3.0 wt, 2.25 eq) was added at a rate such that internal temperature did not exceed ⁇ 60° C. Methanol (0.1 vol) was added at a rate such that internal temperature did not exceed ⁇ 60° C. Note: hydrogen gas evolved and was diluted with a stream of nitrogen. Upon complete addition, the mixture was warmed to ambient temperature and then 1 N hydrochloric acid (10.6 vol) and MTBE (25 vol) were added. The mixture was stirred for 20 minutes and the layers allowed to partition.
- the organic layer was separated and the aqueous layer was back extracted layer with MTBE (15.3 vol).
- the organic layers were combined and washed with water (3 vol), saturated sodium bicarbonate (3 vol), and saturated sodium chloride (3 vol), respectively, then concentrated in vacuo.
- the crude concentrate was purified via SiO 2 column chromatography to yield ER-804028 (0.84 wt, 0.93 eq) as a white foam.
- ER-803895 (F-3a) was dissolved in anhydrous toluene (14 wt.) and cooled to ⁇ 75° C. ⁇ 75° C. under an argon atmosphere. DIBALH (1.5M in toluene, 0.95 wt., 1.3 eq.) was added at a rate to maintain the internal reaction temperature ⁇ 70° C. ⁇ 70° C. The resulting mixture was stirred for 30 minutes then quenched with anhydrous methanol (0.13 wt., 3.2 eq.), maintaining the internal reaction temperature ⁇ 65° C. ⁇ 65° C. The reaction mixture was allowed to warm to ⁇ 10° C.
- DIBALH 1.5M in toluene, 0.95 wt., 1.3 eq.
- a solution of azeotropically dried sulfone ER-804028 (1.0 wt., 1 eq.) in anhydrous tetrahydrofuran (5 vol., 4.45 wt.) was treated with n-butyl lithium (1.6M in hexanes, 1.02 wt., 1.5 vol., 2.05 eq.) such that the internal temperature did not exceed 5° C.
- the mixture was stirred at internal temperature 0 to 5° C. for 10 minutes then cooled to ⁇ 75° C. ⁇ 75° C.
- Azeotropically dried aldehyde ER-803896 (1.07 wt., 1.23 eq.) was dissolved in anhydrous hexanes (3.53 wt., 5.35 vol.) then cooled to ⁇ 75° C. ⁇ 75° C.
- the aldehyde solution was added to the ER-804028 anion by cannula such that internal temperature ⁇ 65° C.
- the mixture was stirred for 45 minutes at internal temperature ⁇ 78° C. then quenched by the addition of saturated ammonium chloride (5 vol.), methyl tert-butyl ether (10 vol.), and water (5 vol.).
- the aqueous layer was discarded and the organic layer concentrated under reduced pressure.
- the crude material was purified via C-18 reverse phase chromatography to afford ER-804029 (84%, 1.57 wt.).
- samarium diiodide solution (2.5 eq.) and the solution cooled to internal temperature ⁇ 70° C. ⁇ 70° C.
- ER-804030 (1 wt.) was dissolved in anhydrous methanol (4.1 wt.) and anhydrous THF (2.3 wt.) and then cooled to ⁇ 70° C. ⁇ 70° C.
- ER-804030 was added to the cold samarium solution at a rate such that the internal temperature did not exceed ⁇ 70° C.
- the reaction was quenched with potassium carbonate/Rochelle's Salts/water (1/10/100; w/w/v, 15 vol.) and MTBE (5 vol.) such that internal temperature did not exceed ⁇ 65° C.
- the reaction was warmed to room temperature and the mixture transferred to a separatory vessel using the workup solution (20 vol. rinse) and MTBE (20 vol. rinse).
- the aqueous layer was discarded, the organic layer evaporated, and the residue purified via silica gel chromatography to afford ER-118049 (0.77 wt., 85%).
- the product was stored at ⁇ 20° C. under inert atmosphere.
- the crude material was purified by flash chromatography (prepped with 3 CV (1:1 (V/V) DCM/heptane, the material was loaded with 1:1 DCM/heptane then eluted with 10/10/1 heptane/DCM/MTBE).
- the product-containing fractions were concentrated and stored under inert atmosphere at ⁇ 20° C.
- ER-118047/48 the oxidation of ER-118047/48 to form the di-ketone ER-118046 was accomplished as follows. A flask was charged with ER-118047/48 (1 wt, 1.0 eq) and toluene (10 vol) and DMSO (0.15 wts, 2.5 eq) were added at room temperature. Et 3 N (0.31 wts, 4.0 eq) was added and the solution was cooled to ⁇ 15° C. TCAA (0.33 wts, 1.4 eq) was added neat and the reaction warmed to 0° C. then stirred for 10 minutes at 0° C. The reaction was stirred for additional 10 minutes then was quenched with IPA (0.15 vol).
- reaction solution was loaded onto a column and purified by silica gel chromatography.
- the dried ER-118064 (F-12 wherein R 1 is MeO) residue was dissolved in anhydrous dichloromethane (28 vol) under a nitrogen atmosphere and treated with PPTS (1.0 wt, 5.2 eq) in one portion. After 30-90 minutes, the reaction mixture was directly loaded atop an appropriate column and purified by silica gel chromatography. The desired fractions of ER-076349 were concentrated in vacuo. The material resulting from the concentration of all pure fractions was azeotroped twice from toluene (20 vol), affording ER-076349 as a crunchy colorless solid/foam (0.44 wt, 0.79 eq after correction for residual toluene).
- ER-076349 (1 wt, 1 eq) was dissolved in anhydrous toluene (20 vol) and concentrated to dryness under reduced pressure.
- the substrate was re-dissolved in anhydrous toluene (20 vol) and concentrated to dryness.
- the substrate was dissolved in DCM (5 vol), and the solution placed under an argon atmosphere.
- Collidine (0.66 wts, 4.0 eq) was added as a single portion.
- Pyridine, as a solution in DCM (Flask B) was added as a single portion (5 mole %).
- the resulting mixture in flask C was cooled to an internal temperature of ⁇ 20 to ⁇ 25° C.
- a DCM solution of Ts 2 O was added drop-wise keeping the internal temperature below ⁇ 16° C. (1.02 eq).
- the reaction was stirred at ⁇ 20 to ⁇ 25° C. for 80 minutes then warmed to 0° C. over 20 minutes and stirred for an additional 20 minutes.
- the reaction was quenched with water (2 vol). The bath was removed, and the reaction allowed to warm to room temperature (15-20° C.) and stirred (20 minutes).
- the reaction was rinsed to a larger vessel using the IPA (100 vol) and aqueous ammonium hydroxide (100 vol) was added to the reaction.
- the reaction was stirred at room temperature for 15-36 hours, monitoring for the disappearance of the tosylate (ER-082892) and epoxide (ER-809681) which formed in situ.
- the reaction was concentrated to dryness or near dryness at reduced pressure.
- the resulting material was diluted with DCM (25-40 vol) and washed pH 10 buffer (NaHCO 3 /Na 2 CO 3 (aq), 10 vol).
- the aqueous phase was back extracted with 25 vol of DCM and the combined organic layers were concentrated to dryness.
- the resulting free amine was purified by silica gel chromatography using a buffered ACN/water mobile phase. The pooled fractions were concentrated at reduced pressure to remove ACN.
- the resulting aqueous layer was diluted with DCM (40 vol) and with 30 vol of a pH 10 buffered stock solution (NaHCO 3 /Na 2 CO 3 ). The layers were mixed well and separated. The aqueous phase was back extracted with 25 vol of DCM and the combined organic layers were concentrated to dryness. The resulting free amine was polish filtered as a solution in 3:1 DCM/pentane and concentrated to dryness (0.80 wts) to afford B-1939.
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US13/924,892 USRE46965E1 (en) | 2004-06-03 | 2005-06-03 | Intermediates for the preparation of analogs of Halichondrin B |
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US57664204P | 2004-06-03 | 2004-06-03 | |
US62676904P | 2004-11-10 | 2004-11-10 | |
US66330005P | 2005-03-18 | 2005-03-18 | |
US11/628,396 US7982060B2 (en) | 2004-06-03 | 2005-06-03 | Intermediates for the preparation of analogs of Halichondrin B |
US13/924,892 USRE46965E1 (en) | 2004-06-03 | 2005-06-03 | Intermediates for the preparation of analogs of Halichondrin B |
PCT/US2005/019669 WO2005118565A1 (en) | 2004-06-03 | 2005-06-03 | Intermediates for the preparation of halichondrin b |
US201213495909A | 2012-06-13 | 2012-06-13 |
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US13/495,909 Active 2027-01-08 USRE45324E1 (en) | 2004-06-03 | 2005-06-03 | Intermediates for the preparation of analogs of halichondrin B |
US13/924,892 Active 2027-01-08 USRE46965E1 (en) | 2004-06-03 | 2005-06-03 | Intermediates for the preparation of analogs of Halichondrin B |
US13/171,971 Abandoned US20120029213A1 (en) | 2004-06-03 | 2011-06-29 | Intermediates for the preparation of analogs of halichondrin b |
US13/476,276 Active US8445701B2 (en) | 2004-06-03 | 2012-05-21 | Intermediates for the preparation of analogs of halichondrin B |
US13/868,641 Active US8618313B2 (en) | 2004-06-03 | 2013-04-23 | Intermediates for the preparation of analogs of Halichondrin B |
US14/096,549 Active US8884031B2 (en) | 2004-06-03 | 2013-12-04 | Intermediates for the preparation of analogs of halichondrin B |
US14/250,086 Active US8975422B2 (en) | 2004-06-03 | 2014-04-10 | Intermediates for the preparation of analogs of halichondrin B |
US14/624,171 Ceased US9303050B2 (en) | 2004-06-03 | 2015-02-17 | Intermediates for the preparation of analogs of Halichondrin B |
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US13/868,641 Active US8618313B2 (en) | 2004-06-03 | 2013-04-23 | Intermediates for the preparation of analogs of Halichondrin B |
US14/096,549 Active US8884031B2 (en) | 2004-06-03 | 2013-12-04 | Intermediates for the preparation of analogs of halichondrin B |
US14/250,086 Active US8975422B2 (en) | 2004-06-03 | 2014-04-10 | Intermediates for the preparation of analogs of halichondrin B |
US14/624,171 Ceased US9303050B2 (en) | 2004-06-03 | 2015-02-17 | Intermediates for the preparation of analogs of Halichondrin B |
US15/944,480 Active USRE47797E1 (en) | 2004-06-03 | 2018-04-03 | Intermediates for the preparation of analogs of halichondrin B |
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