ES2307420B1 - Procedimiento de sintesis quimica de capsinoides. - Google Patents
Procedimiento de sintesis quimica de capsinoides. Download PDFInfo
- Publication number
- ES2307420B1 ES2307420B1 ES200701099A ES200701099A ES2307420B1 ES 2307420 B1 ES2307420 B1 ES 2307420B1 ES 200701099 A ES200701099 A ES 200701099A ES 200701099 A ES200701099 A ES 200701099A ES 2307420 B1 ES2307420 B1 ES 2307420B1
- Authority
- ES
- Spain
- Prior art keywords
- capsinoids
- cdcl
- nmr
- mhz
- methoxybenzyl
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000003786 synthesis reaction Methods 0.000 title claims abstract description 19
- MWOOGOJBHIARFG-UHFFFAOYSA-N vanillin Chemical compound COC1=CC(C=O)=CC=C1O MWOOGOJBHIARFG-UHFFFAOYSA-N 0.000 claims abstract description 28
- 235000012141 vanillin Nutrition 0.000 claims abstract description 25
- FGQOOHJZONJGDT-UHFFFAOYSA-N vanillin Natural products COC1=CC(O)=CC(C=O)=C1 FGQOOHJZONJGDT-UHFFFAOYSA-N 0.000 claims abstract description 25
- 230000032050 esterification Effects 0.000 claims abstract description 14
- 238000005886 esterification reaction Methods 0.000 claims abstract description 14
- -1 alcohol aldehyde Chemical class 0.000 claims abstract description 10
- 150000001875 compounds Chemical class 0.000 claims abstract description 9
- 238000010511 deprotection reaction Methods 0.000 claims abstract description 5
- 150000001263 acyl chlorides Chemical class 0.000 claims description 7
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 claims description 5
- 125000006239 protecting group Chemical group 0.000 claims description 5
- 125000005604 azodicarboxylate group Chemical group 0.000 claims description 4
- 150000008064 anhydrides Chemical class 0.000 claims description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N Propionic acid Chemical compound CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 claims 1
- 150000003138 primary alcohols Chemical class 0.000 claims 1
- NQPDZGIKBAWPEJ-UHFFFAOYSA-N valeric acid Chemical compound CCCCC(O)=O NQPDZGIKBAWPEJ-UHFFFAOYSA-N 0.000 claims 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract description 7
- 229930014626 natural product Natural products 0.000 abstract description 3
- 125000003118 aryl group Chemical group 0.000 abstract description 2
- 230000002860 competitive effect Effects 0.000 abstract description 2
- 238000002156 mixing Methods 0.000 abstract description 2
- 125000003158 alcohol group Chemical group 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 54
- 238000001644 13C nuclear magnetic resonance spectroscopy Methods 0.000 description 34
- 238000005160 1H NMR spectroscopy Methods 0.000 description 34
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 30
- 238000006243 chemical reaction Methods 0.000 description 17
- ZRSNZINYAWTAHE-UHFFFAOYSA-N p-methoxybenzaldehyde Chemical compound COC1=CC=C(C=O)C=C1 ZRSNZINYAWTAHE-UHFFFAOYSA-N 0.000 description 14
- 230000015572 biosynthetic process Effects 0.000 description 10
- 239000003480 eluent Substances 0.000 description 10
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 8
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 8
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 238000013375 chromatographic separation Methods 0.000 description 6
- 239000000741 silica gel Substances 0.000 description 6
- 229910002027 silica gel Inorganic materials 0.000 description 6
- VSINWHDOHWBJCS-UHFFFAOYSA-N (4-hydroxy-3-methoxyphenyl)methyl nonanoate Chemical compound CCCCCCCCC(=O)OCC1=CC=C(O)C(OC)=C1 VSINWHDOHWBJCS-UHFFFAOYSA-N 0.000 description 5
- 239000012074 organic phase Substances 0.000 description 5
- UBTYFBWZRXUZFF-UHFFFAOYSA-N 4-[tert-butyl(dimethyl)silyl]oxy-3-methoxybenzaldehyde Chemical compound COC1=CC(C=O)=CC=C1O[Si](C)(C)C(C)(C)C UBTYFBWZRXUZFF-UHFFFAOYSA-N 0.000 description 4
- RBCYRZPENADQGZ-UHFFFAOYSA-N Dihydrocapsiate Chemical compound COC1=CC(COC(=O)CCCCCCC(C)C)=CC=C1O RBCYRZPENADQGZ-UHFFFAOYSA-N 0.000 description 4
- 238000012512 characterization method Methods 0.000 description 4
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 4
- 235000019341 magnesium sulphate Nutrition 0.000 description 4
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 4
- 239000011541 reaction mixture Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 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 4
- 125000003172 aldehyde group Chemical group 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 3
- 239000012298 atmosphere Substances 0.000 description 3
- SIPUZPBQZHNSDW-UHFFFAOYSA-N bis(2-methylpropyl)aluminum Chemical compound CC(C)C[Al]CC(C)C SIPUZPBQZHNSDW-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 235000013305 food Nutrition 0.000 description 3
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 3
- DKZBBWMURDFHNE-UHFFFAOYSA-N trans-coniferylaldehyde Natural products COC1=CC(C=CC=O)=CC=C1O DKZBBWMURDFHNE-UHFFFAOYSA-N 0.000 description 3
- ZENOXNGFMSCLLL-UHFFFAOYSA-N vanillyl alcohol Chemical compound COC1=CC(CO)=CC=C1O ZENOXNGFMSCLLL-UHFFFAOYSA-N 0.000 description 3
- OAOABCKPVCUNKO-UHFFFAOYSA-M 8-methylnonanoate Chemical compound CC(C)CCCCCCC([O-])=O OAOABCKPVCUNKO-UHFFFAOYSA-M 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 239000008346 aqueous phase Substances 0.000 description 2
- YKPUWZUDDOIDPM-SOFGYWHQSA-N capsaicin Natural products COC1=CC(CNC(=O)CCCC\C=C\C(C)C)=CC=C1O YKPUWZUDDOIDPM-SOFGYWHQSA-N 0.000 description 2
- ZICNYIDDNJYKCP-SOFGYWHQSA-N capsiate Chemical compound COC1=CC(COC(=O)CCCC\C=C\C(C)C)=CC=C1O ZICNYIDDNJYKCP-SOFGYWHQSA-N 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 238000003760 magnetic stirring Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- FBUKVWPVBMHYJY-UHFFFAOYSA-N nonanoic acid Chemical compound CCCCCCCCC(O)=O FBUKVWPVBMHYJY-UHFFFAOYSA-N 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- DZWDEGBGKYCSKL-UHFFFAOYSA-N (4-hydroxy-3-methoxyphenyl)methyl acetate Chemical compound COC1=CC(COC(C)=O)=CC=C1O DZWDEGBGKYCSKL-UHFFFAOYSA-N 0.000 description 1
- IBKHHUOTHPULLB-UHFFFAOYSA-N (4-hydroxy-3-methoxyphenyl)methyl butanoate Chemical compound CCCC(=O)OCC1=CC=C(O)C(OC)=C1 IBKHHUOTHPULLB-UHFFFAOYSA-N 0.000 description 1
- FAKANUSCBNENBY-UHFFFAOYSA-N (4-hydroxy-3-methoxyphenyl)methyl decanoate Chemical compound CCCCCCCCCC(=O)OCC1=CC=C(O)C(OC)=C1 FAKANUSCBNENBY-UHFFFAOYSA-N 0.000 description 1
- BVLBSDCJOQWWDI-UHFFFAOYSA-N (4-hydroxy-3-methoxyphenyl)methyl dodecanoate Chemical compound CCCCCCCCCCCC(=O)OCC1=CC=C(O)C(OC)=C1 BVLBSDCJOQWWDI-UHFFFAOYSA-N 0.000 description 1
- SRDJMJRFMOGUAC-UHFFFAOYSA-N (4-hydroxy-3-methoxyphenyl)methyl heptanoate Chemical compound CCCCCCC(=O)OCC1=CC=C(O)C(OC)=C1 SRDJMJRFMOGUAC-UHFFFAOYSA-N 0.000 description 1
- CBGFKQLOLOQVBW-UHFFFAOYSA-N (4-hydroxy-3-methoxyphenyl)methyl hexadecanoate Chemical compound CCCCCCCCCCCCCCCC(=O)OCC1=CC=C(O)C(OC)=C1 CBGFKQLOLOQVBW-UHFFFAOYSA-N 0.000 description 1
- QQLUTUHDPQXTDK-UHFFFAOYSA-N (4-hydroxy-3-methoxyphenyl)methyl hexanoate Chemical compound CCCCCC(=O)OCC1=CC=C(O)C(OC)=C1 QQLUTUHDPQXTDK-UHFFFAOYSA-N 0.000 description 1
- WOQZUSJDLLGEHO-UHFFFAOYSA-N (4-hydroxy-3-methoxyphenyl)methyl octanoate Chemical compound CCCCCCCC(=O)OCC1=CC=C(O)C(OC)=C1 WOQZUSJDLLGEHO-UHFFFAOYSA-N 0.000 description 1
- WEEJRTOTSXGXPJ-UHFFFAOYSA-N (4-hydroxy-3-methoxyphenyl)methyl pentanoate Chemical compound CCCCC(=O)OCC1=CC=C(O)C(OC)=C1 WEEJRTOTSXGXPJ-UHFFFAOYSA-N 0.000 description 1
- FBRGKMHMLKYQOD-UHFFFAOYSA-N (4-hydroxy-3-methoxyphenyl)methyl propanoate Chemical compound CCC(=O)OCC1=CC=C(O)C(OC)=C1 FBRGKMHMLKYQOD-UHFFFAOYSA-N 0.000 description 1
- JKVDPFLAQRUMRW-UHFFFAOYSA-N (4-hydroxy-3-methoxyphenyl)methyl tetradecanoate Chemical compound CCCCCCCCCCCCCC(=O)OCC1=CC=C(O)C(OC)=C1 JKVDPFLAQRUMRW-UHFFFAOYSA-N 0.000 description 1
- CKXHFJMCISNIFA-UHFFFAOYSA-N (4-hydroxy-3-methoxyphenyl)methyl tridecanoate Chemical compound CCCCCCCCCCCCC(=O)OCC1=CC=C(O)C(OC)=C1 CKXHFJMCISNIFA-UHFFFAOYSA-N 0.000 description 1
- CDKWGGBSPOSAKP-UHFFFAOYSA-N (4-hydroxy-3-methoxyphenyl)methyl undecanoate Chemical compound CCCCCCCCCCC(=O)OCC1=CC=C(O)C(OC)=C1 CDKWGGBSPOSAKP-UHFFFAOYSA-N 0.000 description 1
- XVMSFILGAMDHEY-UHFFFAOYSA-N 6-(4-aminophenyl)sulfonylpyridin-3-amine Chemical compound C1=CC(N)=CC=C1S(=O)(=O)C1=CC=C(N)C=N1 XVMSFILGAMDHEY-UHFFFAOYSA-N 0.000 description 1
- OCALSPDXYQHUHA-FNORWQNLSA-N 8-Methyl-6-nonenoic acid Chemical compound CC(C)\C=C\CCCCC(O)=O OCALSPDXYQHUHA-FNORWQNLSA-N 0.000 description 1
- UBZNGKUAUXOIKL-UHFFFAOYSA-N 8-methylnonanoyl chloride Chemical compound CC(C)CCCCCCC(Cl)=O UBZNGKUAUXOIKL-UHFFFAOYSA-N 0.000 description 1
- RKAZEZRBOUDAHJ-UHFFFAOYSA-N CCCCCCCCC(C=C1)=CC(OC)=C1O[Si](C)(C)C(C)(C)C Chemical compound CCCCCCCCC(C=C1)=CC(OC)=C1O[Si](C)(C)C(C)(C)C RKAZEZRBOUDAHJ-UHFFFAOYSA-N 0.000 description 1
- 240000004160 Capsicum annuum Species 0.000 description 1
- 235000008534 Capsicum annuum var annuum Nutrition 0.000 description 1
- WABFRTVFIWTTDD-UHFFFAOYSA-N Cl.C(C)(C)(C)[SiH](C)C Chemical compound Cl.C(C)(C)(C)[SiH](C)C WABFRTVFIWTTDD-UHFFFAOYSA-N 0.000 description 1
- IGCMVXRBIWDHMJ-UHFFFAOYSA-N [4-[tert-butyl(dimethyl)silyl]oxy-3-methoxyphenyl]methyl 8-methylnonanoate Chemical compound COC1=CC(COC(=O)CCCCCCC(C)C)=CC=C1O[Si](C)(C)C(C)(C)C IGCMVXRBIWDHMJ-UHFFFAOYSA-N 0.000 description 1
- HXMBBNLNRRHQRQ-UHFFFAOYSA-N [4-[tert-butyl(dimethyl)silyl]oxy-3-methoxyphenyl]methyl acetate Chemical compound COC1=CC(COC(C)=O)=CC=C1O[Si](C)(C)C(C)(C)C HXMBBNLNRRHQRQ-UHFFFAOYSA-N 0.000 description 1
- BRVZIQGVBBVBQE-UHFFFAOYSA-N [4-[tert-butyl(dimethyl)silyl]oxy-3-methoxyphenyl]methyl butanoate Chemical compound CCCC(=O)OCC1=CC=C(O[Si](C)(C)C(C)(C)C)C(OC)=C1 BRVZIQGVBBVBQE-UHFFFAOYSA-N 0.000 description 1
- JJORPQDRPBGCGO-UHFFFAOYSA-N [4-[tert-butyl(dimethyl)silyl]oxy-3-methoxyphenyl]methyl decanoate Chemical compound CCCCCCCCCC(=O)OCC1=CC=C(O[Si](C)(C)C(C)(C)C)C(OC)=C1 JJORPQDRPBGCGO-UHFFFAOYSA-N 0.000 description 1
- LDXYDVRFZONNEU-UHFFFAOYSA-N [4-[tert-butyl(dimethyl)silyl]oxy-3-methoxyphenyl]methyl dodecanoate Chemical compound CCCCCCCCCCCC(=O)OCC1=CC=C(O[Si](C)(C)C(C)(C)C)C(OC)=C1 LDXYDVRFZONNEU-UHFFFAOYSA-N 0.000 description 1
- KDQYNDNBAWIJEQ-UHFFFAOYSA-N [4-[tert-butyl(dimethyl)silyl]oxy-3-methoxyphenyl]methyl hexadecanoate Chemical compound CCCCCCCCCCCCCCCC(=O)OCC1=CC=C(O[Si](C)(C)C(C)(C)C)C(OC)=C1 KDQYNDNBAWIJEQ-UHFFFAOYSA-N 0.000 description 1
- PLYLWZQFNQDWPJ-UHFFFAOYSA-N [4-[tert-butyl(dimethyl)silyl]oxy-3-methoxyphenyl]methyl hexanoate Chemical compound CCCCCC(=O)OCC1=CC=C(O[Si](C)(C)C(C)(C)C)C(OC)=C1 PLYLWZQFNQDWPJ-UHFFFAOYSA-N 0.000 description 1
- XPSOEJJXLJRUHI-UHFFFAOYSA-N [4-[tert-butyl(dimethyl)silyl]oxy-3-methoxyphenyl]methyl nonanoate Chemical compound CCCCCCCCC(=O)OCC1=CC=C(O[Si](C)(C)C(C)(C)C)C(OC)=C1 XPSOEJJXLJRUHI-UHFFFAOYSA-N 0.000 description 1
- RZBLKAOIRMZBAY-UHFFFAOYSA-N [4-[tert-butyl(dimethyl)silyl]oxy-3-methoxyphenyl]methyl octanoate Chemical compound CCCCCCCC(=O)OCC1=CC=C(O[Si](C)(C)C(C)(C)C)C(OC)=C1 RZBLKAOIRMZBAY-UHFFFAOYSA-N 0.000 description 1
- REZKSWORTOKIOI-UHFFFAOYSA-N [4-[tert-butyl(dimethyl)silyl]oxy-3-methoxyphenyl]methyl pentanoate Chemical compound CCCCC(=O)OCC1=CC=C(O[Si](C)(C)C(C)(C)C)C(OC)=C1 REZKSWORTOKIOI-UHFFFAOYSA-N 0.000 description 1
- HVQAFGWMSLYDKG-UHFFFAOYSA-N [4-[tert-butyl(dimethyl)silyl]oxy-3-methoxyphenyl]methyl propanoate Chemical compound CCC(=O)OCC1=CC=C(O[Si](C)(C)C(C)(C)C)C(OC)=C1 HVQAFGWMSLYDKG-UHFFFAOYSA-N 0.000 description 1
- CTTJCPDCDKXDFJ-UHFFFAOYSA-N [4-[tert-butyl(dimethyl)silyl]oxy-3-methoxyphenyl]methyl tetradecanoate Chemical compound CCCCCCCCCCCCCC(=O)OCC1=CC=C(O[Si](C)(C)C(C)(C)C)C(OC)=C1 CTTJCPDCDKXDFJ-UHFFFAOYSA-N 0.000 description 1
- GTFHRQGWOSBNRF-UHFFFAOYSA-N [4-[tert-butyl(dimethyl)silyl]oxy-3-methoxyphenyl]methyl tridecanoate Chemical compound CCCCCCCCCCCCC(=O)OCC1=CC=C(O[Si](C)(C)C(C)(C)C)C(OC)=C1 GTFHRQGWOSBNRF-UHFFFAOYSA-N 0.000 description 1
- JXKRVRFGLBQRBS-UHFFFAOYSA-N [4-[tert-butyl(dimethyl)silyl]oxy-3-methoxyphenyl]methyl undecanoate Chemical compound CCCCCCCCCCC(=O)OCC1=CC=C(O[Si](C)(C)C(C)(C)C)C(OC)=C1 JXKRVRFGLBQRBS-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 125000002252 acyl group Chemical group 0.000 description 1
- 229940035676 analgesics Drugs 0.000 description 1
- 239000000730 antalgic agent Substances 0.000 description 1
- 230000001093 anti-cancer Effects 0.000 description 1
- 230000003110 anti-inflammatory effect Effects 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- 239000012300 argon atmosphere Substances 0.000 description 1
- 230000000975 bioactive effect Effects 0.000 description 1
- 230000004071 biological effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- VYLVYHXQOHJDJL-UHFFFAOYSA-K cerium trichloride Chemical compound Cl[Ce](Cl)Cl VYLVYHXQOHJDJL-UHFFFAOYSA-K 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000002113 chemopreventative effect Effects 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 229910000366 copper(II) sulfate Inorganic materials 0.000 description 1
- 230000037149 energy metabolism Effects 0.000 description 1
- 239000003925 fat Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 150000004678 hydrides Chemical class 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 235000009048 phenolic acids Nutrition 0.000 description 1
- 150000007965 phenolic acids Chemical class 0.000 description 1
- 235000013824 polyphenols Nutrition 0.000 description 1
- 230000003389 potentiating effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000012429 reaction media Substances 0.000 description 1
- 238000006884 silylation reaction Methods 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- FGTJJHCZWOVVNH-UHFFFAOYSA-N tert-butyl-[tert-butyl(dimethyl)silyl]oxy-dimethylsilane Chemical class CC(C)(C)[Si](C)(C)O[Si](C)(C)C(C)(C)C FGTJJHCZWOVVNH-UHFFFAOYSA-N 0.000 description 1
- BCNZYOJHNLTNEZ-UHFFFAOYSA-N tert-butyldimethylsilyl chloride Chemical compound CC(C)(C)[Si](C)(C)Cl BCNZYOJHNLTNEZ-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/28—Preparation of carboxylic acid esters by modifying the hydroxylic moiety of the ester, such modification not being an introduction of an ester group
- C07C67/29—Preparation of carboxylic acid esters by modifying the hydroxylic moiety of the ester, such modification not being an introduction of an ester group by introduction of oxygen-containing functional groups
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/21—Esters, e.g. nitroglycerine, selenocyanates
- A61K31/215—Esters, e.g. nitroglycerine, selenocyanates of carboxylic acids
- A61K31/22—Esters, e.g. nitroglycerine, selenocyanates of carboxylic acids of acyclic acids, e.g. pravastatin
- A61K31/222—Esters, e.g. nitroglycerine, selenocyanates of carboxylic acids of acyclic acids, e.g. pravastatin with compounds having aromatic groups, e.g. dipivefrine, ibopamine
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/21—Esters, e.g. nitroglycerine, selenocyanates
- A61K31/215—Esters, e.g. nitroglycerine, selenocyanates of carboxylic acids
- A61K31/22—Esters, e.g. nitroglycerine, selenocyanates of carboxylic acids of acyclic acids, e.g. pravastatin
- A61K31/23—Esters, e.g. nitroglycerine, selenocyanates of carboxylic acids of acyclic acids, e.g. pravastatin of acids having a carboxyl group bound to a chain of seven or more carbon atoms
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/21—Esters, e.g. nitroglycerine, selenocyanates
- A61K31/215—Esters, e.g. nitroglycerine, selenocyanates of carboxylic acids
- A61K31/25—Esters, e.g. nitroglycerine, selenocyanates of carboxylic acids with polyoxyalkylated alcohols, e.g. esters of polyethylene glycol
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/14—Preparation of carboxylic acid esters from carboxylic acid halides
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
- C07C69/007—Esters of unsaturated alcohols having the esterified hydroxy group bound to an acyclic carbon atom
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
- C07C69/02—Esters of acyclic saturated monocarboxylic acids having the carboxyl group bound to an acyclic carbon atom or to hydrogen
- C07C69/22—Esters of acyclic saturated monocarboxylic acids having the carboxyl group bound to an acyclic carbon atom or to hydrogen having three or more carbon atoms in the acid moiety
- C07C69/28—Esters of acyclic saturated monocarboxylic acids having the carboxyl group bound to an acyclic carbon atom or to hydrogen having three or more carbon atoms in the acid moiety esterified with dihydroxylic compounds
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- 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
- C07F7/1804—Compounds having Si-O-C linkages
- C07F7/1872—Preparation; Treatments not provided for in C07F7/20
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Abstract
Procedimiento de síntesis química de
capsinoides.
Procedimiento para la síntesis química de
capsinoides, compuestos naturales con demostrada actividad
biológica, a partir de vainillina, mediante protección del grupo
alcohol de ésta, reducción del aldehído a alcohol, esterificación de
éste y desprotección del primer grupo alcohol protegido.
De esta forma, se generan los compuestos
deseados con alta pureza y fácilmente separables, al evitarse la
mezcla debida a la esterificación competitiva sobre el anillo
aromático.
Description
Procedimiento de síntesis química de
capsinoides.
La invención pertenece al campo de la síntesis
química de compuestos naturales bioactivos.
Los capsinoides son compuestos naturales que se
encuentran en distintas 1 variedades de pimientos dulces. Su máximo
interés reside en la demostrada actividad biológica que exhiben. El
interés de los capsinoides es tan alto que ya se ha registrado su
patente con posibles usos en bebidas "saludables" del capsiato
y del nordihidrocapsiato (Patente Nº WO 9944981 A1), además de su
uso en analgésicos y en alimentos (Patente Nº JP 2001158738
A2).
Los capsinoides químicamente son ésteres
formados a partir de la condensación del alcohol vaníllico y ácidos
grasos de distintas longitudes de cadena. Dependiendo del número de
carbonos de la cadena lateral (R) o de si poseen o no
insaturaciones se pueden tener los distintos capsinoides naturales
que se conocen (figura 1).
Los capsinoides son compuestos que presentan
unas marcadas propiedades antioxidantes (ver, por ejemplo, Rosa,
A.; Deiana, M.; Casu, V.; Paccagnini, S.; Appendino, G.; Ballero,
M.; Dessí, M. A. J. Agric. Food Chem. 2002, 50,
7396-7401), son compuestos quimiopreventivos y
anticancerigenos (ver Macho, A.; Lucena, C.; Sancho, R.; Daddario,
N.; Minassi, A.; Muñoz, E.; Appendino, G. Eur. J. Nutr.
2003, 42, 2-9), promueven el
metabolismo energético y suprimen la acumulación de grasas en el
organismo (ver Ohnuki, K.; Niwa, S.; Maeda, S.; Inoue, N.; Yazawa,
S.; Fushiki, T. Biosci. Biotechnol. Biochem. 2001,
65, 2033-2036) y son unos potentes
compuestos anti-inflamatorios (ver Sancho, R.;
Lucena, C.; Macho, A.; Calzado, M. A.;
Blanco-Molina, Minassi, M. A.; Appendino, G.;
Muñoz, E. Eur. J. Immunol. 2002, 32,
1753-1763).
Es por ello que el estudio de procedimientos de
síntesis de capsinoides tanto naturales como sintéticos, con
propiedades similares a los naturales, presente un gran interés,
debido a la dificultad del aislamiento de estos compuestos. En los
últimos años han sido desarrolladas diversas metodologías sintéticas
de esta familia de compuestos.
Kobata y colaboradores (ver Kobata, K.; Todo,
T.; Yazawa, S.; Iwai, K.; Watanabe, T. J. Agric. Food Chem.
1998, 46, 1695-1697) sintetizaron
químicamente el 8-metilnonanoato de
4-hidroxi-3-metoxibencilo
(dihidrocapsiato). Para ello hicieron reaccionar al alcohol
vaníllico con el cloruro del ácido 8-metilnonanoico
en piridina. La mezcla de reacción se agitó magnéticamente durante
2 h a 0ºC.
Appendino y colaboradores (ver Appendino, G.;
Minassi, A.; Daddario, N.; Bianchi, F.; Tron, G.C. Org.
Lett. 2002, 22. 3839-3841)
posteriormente han estudiado la esterificación quimioselectiva de
ácidos fenólicos con alcoholes. Este tipo de reacción ha sido
aplicada para la síntesis del nonanoato de vanillilo. Para la
síntesis del nonanoato de vanillilo hicieron reaccionar al alcohol
vaníllico con el ácido nonanoico, utilizando como medio de reacción
el tetrahidrofurano (THF) y cantidades equimolares de
azodicarboxilato de diisipropilo (DIAD) y trifenil fosfina (TPP).
La reacción se llevó a cabo a temperatura ambiente y durante 24
horas. En estas condiciones, el rendimiento obtenido del vanillil
nonanoato fue del 67%.
Recientemente, Torregiani y colaboradores (ver
Torregiani, E.; Seu, G.; Minassi, A.; Appendino, G. Tetrahedron
Lett. 2005, 46, 2193-2196) han desarrollado un
nuevo método para la esterificación selectiva de los alcoholes
fenólicos, catalizándose la reacción mediante cloruro de cerio
(III). Mediante este nuevo procedimiento de síntesis se consiguió
obtener el nonanoato de vanillilo con un rendimiento del 70%.
La invención consiste en un nuevo procedimiento
general, selectivo y sencillo para la síntesis de capsinoides. Este
procedimiento se compone de 4 pasos de reacción a partir de la
vainillina
(4-hidroxi-3-metoxibenzaldehído).
El procedimiento parte de la vainillina que
cuenta con un grupo aldehído en la posición que se pretende
esterificar. Ello permite proteger el hidroxilo aromático
bloqueando éste de forma eficiente mediante un grupo protector. La
posterior reducción del grupo aldehído da lugar a un alcohol
vaníllico protegido que no presenta problemas de selectividad en su
esterificación. Una vez realizada ésta., puede desprotegerse
generando los compuestos deseados con alta pureza y fácilmente
separables al evitarse la mezcla de productos debida a la
esterificación competitiva sobre el anillo aromático. En resumen,
el procedimiento se puede concretar en:
- Paso 1:
- Protección del grupo hidroxilo de la vainillina (figura 2).
- Paso 2:
- Reducción del carbonilo de la vainillina protegida (figura 3).
- Paso 3:
- Esterificación de la vainillina reducida y protegida con cloruros de acilo o cualquier otro agente acilante (anhídridos, derivados del azodicarboxilato de dialquilo, etc.) (figura 4).
- Paso 4:
- Desprotección de los capsinoides protegidos (figura 5).
Estos cuatro pasos de reacción comprenden
reacciones selectivas de un elevado rendimiento.
Figura 1: Estructura base de los capsinoides y
cadenas laterales que presentan los capsinoides naturales
conocidos.
Figura 2: Paso 1 del Procedimiento.- Protección
del grupo hidroxilo de la vainillina (P es un grupo
protector).
Figura 3: Paso 2 del Procedimiento.- Reducción
del carbonilo de la vainillina protegida.
Figura 4: Paso 3 del Procedimiento.-
Esterificación de la vainillina reducida y protegida con cloruros
de acilo o cualquier otro agente acilante (anhídridos, derivados
del azodicarboxilato de dialquilo, etc.).
Figura 5: Paso 4 del Procedimiento.-
Desprotección de los capsinoides protegidos.
Paso
1
Este paso de reacción (figura 2) consiste en la
protección del grupo hidroxilo de la vainillina
(4-hidroxi-3-metoxi-benzaldehído)
para evitar que se produzcan esterificaciones posteriores en esta
posición de la molécula.
El producto de partida para la síntesis de los
capsinoides es la vainillina. Se protege el grupo hidroxilo de la
vainillina con cloruro de
t-butil-dimetilsililo, para posteriormente
realizar una reducción del grupo aldehído para poder esterificar en
esta posición y de esta manera introducir las cadenas laterales de
los capsinoides.
La vainillina (5.8995 g, 0.0388 mol) (II) se
introduce en un matraz de fondo redondo de 250 mL y se disuelve en
30 mL de piridina anhidra. A esta disolución se le añaden 1.2
equivalentes de cloruro de
t-butil-dimetilsilano (7.0128 g, 0.0466
mol). La mezcla de reacción se mantiene en agitación magnética a
temperatura ambiente y en atmósfera inerte de argón durante 24
horas.
La reacción se sigue por CCF (eluyente: 20%
acetato de etilo, 80% hexano; revelador: anisaldehído). Concluida
la reacción, se detiene con acetato de etilo (100 mL). La fase
orgánica (acetato de etilo) se lava varias veces con una disolución
acuosa de CuSO_{4}x5H_{2}O concentrado para eliminar la
piridina, hasta que no se observa cambio de color de la disolución
de CuSO_{4}x5H_{2}O.
La fase orgánica se seca con MgSO_{4} anhidro,
se filtra y se concentra a vacío para eliminar el acetato de etilo
(temperatura ambiente). Finalmente se obtiene un precipitado
amarillento (III) que se corresponde a la vainillina sililada
(4-terc-butildimetilsililoxi-3-metoxibenzaldehído)
(rendimiento: 98%).
4-terc-butildimetilsililoxi-3-metoxibenzaldehído:
^{1}H-RMN (CDCl_{3}, 399.945 MHz): \delta
7.35 (1H, d, 1.8 Hz, H-2), \delta 7.32 (1H, dd,
1.8, 8.1 Hz, H-6), \delta 6.91 (1H, d, 8.1 Hz,
H-5), \delta 3.81 (3H, s, H-7),
\delta 9.74 (1H, s, H (ald)), \delta 0.14 (6H, s, 2xCH_{3}),
\delta 0.95 (9H, s, 3xCH_{3}). ^{13}C-RMN
(CDCl_{3}, 100.576 MHz): \delta 151.2 (s, C-4),
\delta 151.4 (s, C-3), \delta 110.0 (d,
C-2), \delta 130.8 (s, C-1),
\delta 126.0 (d, C-6), \delta 120.5 (d,
C-5), \delta 55.3 (c, C-7),
\delta 190.8 (d, C-8), \delta 18.3 (s,
C-9), \delta -4.7 (2C, c, C-10),
\delta 25.4 (3C, c, C-11).
Paso
2
El siguiente paso de reacción (figura 3)
consiste en la reducción del grupo carbonilo de la vainillina
sililada (11)
(4-terc-butildimetilsililoxi-3-metoxibenzaldehído)
hasta su correspondiente alcohol (IV). El agente reductor empleado
ha sido el hidruro de diisobutilaluminio (1M en tolueno)
(DIBAL).
La vainillina sililada (III) (3.3518 g, 0.0125
mol) se disuelve en 40 mL de tetrahidrofurano anhidro.
Posteriormente se adicionan lentamente 2 equivalentes de hidruro de
diisobutilaluminio (1M en Tolueno) en baño de hielo y se mantiene
la mezcla de reacción en agitación magnética, a temperatura ambiente
y en atmósfera inerte de argón durante 48 horas.
La reacción se sigue por CCF (eluyente: 20%
acetato de etilo, 80% hexano; revelador: anisaldehído). Una vez
transcurrida la reacción se detiene con agua. La fase acuosa se
extrae 3 veces con acetato de etilo (3x100 mL). La fase orgánica se
seca con MgSO_{4} anhidro, se filtra y se concentra a presión
reducida para eliminar el acetato de etilo (temperatura ambiente).
Finalmente se obtiene un aceite marrón oscuro impuro. Este aceite se
disuelve en una pequeña cantidad de acetato de etilo y se le añade
silica gel para obtener la cabeza de la columna de separación. La
cabeza de la columna se seca a presión reducida (temperatura
ambiente).
La separación cromatográfica se realiza con
silica gel y la polaridad del eluyente es del 10% de acetato de
etilo en hexano. La separación cromatográfica se sigue por CCF
(eluyente: 20% acetato de etilo, 80% hexano; revelador:
anisaldehído). Finalmente se obtiene un aceite marrón oscuro (IV)
que corresponde a la vainillina reducida y sililada
(4-terc-butildimetilsililoxi-3-metoxibencil
alcohol) (rendimiento: 74%). Este aceite se utiliza como punto de
partida para la síntesis de todos los capsinoides sililados.
4-terc-butildimetilsililoxi-3-metoxibencil
alcohol: ^{1}H-RMN (CDCl_{3}, 399.945 MHz):
\delta 6.82 (1H, d, 1.8 Hz, H-2), \delta 6.72
(1H, dd, 1.8, 8.2 Hz, H-6), \delta 6.76 (1H, d,
8.2 Hz, H-5), \delta 3.74 (3H, s,
H-7), \delta 4.50 (2H, s, H-8),
\delta 2.65 (1H, s, OH), \delta 0.11 (6H, s, 2xCH_{3}),
\delta 0.96 (9H, s, 3xCH_{3}). ^{13}C-RMN
(CDCl_{3}, 100.576 MHz): \delta 150.8 (s, C-4),
\delta 144.3 (s, C-3), \delta 111.0 (d,
C-2), \delta 134.4 (s, C-1),
\delta 120.6 (d, C-6), \delta 119.3 (d,
C-5), \delta 55.2 (c, C-7),
\delta 64.9 (t, C-8), \delta 18.3 (s,
C-9), \delta 4.8 (2C, c, C-10),
\delta 25.6 (3C, c, C-11).
\vskip1.000000\baselineskip
Paso
3
Este paso de reacción consiste en la
esterificación de la vainillina reducida y protegida (IV)
(4-terc-butildimetilsili-
loxi-3-metoxibencil alcohol) con los cloruros de acilo correspondientes, según el capsinoide que se quiera sintetizar (figura 4).
loxi-3-metoxibencil alcohol) con los cloruros de acilo correspondientes, según el capsinoide que se quiera sintetizar (figura 4).
La vainillina reducida y protegida (IV) (0.8442
g) se disuelve en 15 mL de piridina anhidra en un matraz de 50 mL
de fondo redondo. Se introduce atmósfera inerte de argón. A esta
disolución se le añade seguidamente el cloruro de acilo
correspondiente (2 equivalentes), lentamente, y se deja en agitación
durante 18 horas. La reacción se sigue por CCF (eluyente: 20%
acetato de etilo, 80% hexano; revelador: anisaldehido).
Una vez terminada la reacción, se detiene con
acetato de etilo. La fase orgánica se lava 3 veces con HC1 al 10%
para eliminar la piridina del medio (3x50 mL). Posteriormente, la
fase orgánica se filtra y se seca con MgSO_{4} anhidro y se
concentra a presión reducida (T \approx 30ºC). Se obtiene un
aceite pardo, que se disuelve en una pequeña cantidad de acetato de
etilo, añadiéndole seguidamente silica gel para obtener la cabeza
de la columna de separación. El acetato de etilo se seca a presión
reducida (T \approx 30ºC) para obtener la cabeza de la
columna.
La separación cromatográfica se realiza con
silica gel y la polaridad del eluyente es del 20% de acetato de
etilo en hexano. La separación cromatográfica se sigue por CCF
(eluyente: 20% acetato de etilo, 80% hexano; revelador:
anisaldehido). Finalmente se obtiene un aceite amarillento
(O2C-O12C) y un precipitado amarillento blanquecino
(O13C-016C) que corresponden con los capsinoides
sililados (V) (rendimientos 84-99%).
\vskip1.000000\baselineskip
Etanoato de
4-terc-butildimetilsililoxi-3-metoxibencilo:
^{1}H-RMN (CDCl_{3}, 399.945 MHz): \delta
6.84 (1H, s^{a}, H-2), \delta 6.81 (1H, d^{b},
H-6), \delta 6.81 (1H, d^{b},
H-5), \delta 3.80 (3H, s, H-7),
\delta 5.01 (2H, s, H-8), \delta 0.14 (6H, s,
2xCH_{3}), \delta 0.98 (9H, s, 3xCH_{3}), \delta 2.08 (3H,
s, H-2'). ^{13}C-RMN (CDCl_{3},
100.576 MHz): \delta 150.9 (s, C-4), \delta
145.2 (s, C-3), \delta 112.6 (d,
C-2), \delta 129.2 (s, C-1),
\delta 121.2 (d, C-6), \delta 120.8 (d,
C-5), \delta 55.4 (c, C-7),
\delta 66.4 (t, C-8), \delta 18.4 (s,
C-9), \delta 4.6 (2C, c, C-10),
\delta 25.7 (3C, c, C-11), \delta 170.9 (s,
C-1'), \delta 21.1 (c, C-2').
Propanoato de
4-terc-butildimetilsililoxi-3-metoxibencilo:
^{1}H-RMN (CDCl_{3}, 399.945 MHz): \delta
6.84 (1H, s^{a}, H-2), \delta 6.80 (1H, d^{b},
H-6), \delta 6.80 (1H, d^{b},
H-5), \delta 3.80 (3H, s, H-7),
\delta 5.03 (2H, s, H-8), \delta 0.14 (611, s,
2xCH_{3}), \delta 0.98 (9H, s, 3xCH_{3}), \delta 2.36 (2H,
c, 7.6 Hz, H-2'), \delta 1.15 (3H, t, 7.6 Hz,
H-3'). ^{13}C-RMN (CDCl_{3},
100.576 MHz): \delta 150.9 (s, C-4), \delta
145.1 (s, C-3), \delta 112.5 (d,
C-2), \delta 129.4 (s, C-1),
\delta 121.1 (d, C-6), \delta 120.7 (d,
C-5), \delta 55.4 (c, C-7),
\delta 66.2 (t, C-8), \delta 18.4 (s,
C-9), \delta 4.7 (2C, c, C-10),
\delta 25.7 (3C, c, C-11), \delta 174.3 (s,
C-1'), \delta 27.6 (t, C-2'),
\delta 9.1 (c, C-3').
Butanoato de
4-terc-butildimetilsililoxi-3-metoxibencilo:
^{1}H-RMN (CDCl_{3}, 399.945 MHz): \delta
6.84 (1H, s^{a}, H-2), \delta 6.80 (1H, d^{b},
H-6), \delta 6.80 (1H, d^{b},
H-5), \delta 3.78 (311, s, H-7),
\delta 5.02 (2H, s, H-8), \delta 0.14 (6H, s,
2xCH_{3}), \delta 0.98 (911, s, 3xCH_{3}), \delta 2.31 (2H,
t, 7.6 Hz, H-2'), \delta 1.65 (2H, tc, 7.6, 7.2
Hz, H-3'), \delta 0.92 (3H, t, 7.2 Hz,
H-4'). ^{13}C-RMN (CDCl_{3},
100.576 MHz): \delta 150.8 (s, C-4), \delta
145.0 (s, C-3), \delta 112.4 (d,
C-2), \delta 129.5 (s, C-1),
\delta 121.0 (d, C-6), \delta 120.6 (d,
C-5), \delta 55.3 (c, C-7),
\delta 66.0 (t, C-8), \delta 18.3 (s,
C-9), \delta -4.7 (2C, c, C-10),
\delta 25.6 (3C, c, C-11), \delta 174.3 (s,
C-1'), \delta 36.1 (t, C-2'),
\delta 18.3 (t, C-3'), \delta 13.5 (c,
C-4').
\newpage
Pentanoato de
4-terc-butildimetilsililoxi-3-metoxibencilo:
^{1}H-RMN (CDCl_{3}, 399.945 MHz): \delta
6.82 (1H, s^{a}, H-2), \delta 6.79 (1H, d^{b},
H-6), \delta 6.79 (1H, d^{b},
11-5), \delta 3.77 (3H, s, H-7),
\delta 5.00 (2H, s, H-8), \delta 0.13 (6H, s,
2xCH_{3}), \delta 0.97 (9H, s, 3xCH_{3}), \delta 2.31 (2H,
t, 7.6 Hz, H-2'), \delta 1.60 (2H, q, 7.6, 7.6 Hz,
H-3'), \delta 1.31 (2H, tc, 7.6, 7.2 Hz,
H-4'), \delta 0.87 (3H, t, 7.2 Hz,
H-5'). ^{13}C-RMN (CDCl_{3},
100.576 MHz): \delta 151.1 (s, C-4), \delta
145.3 (s, C-3), \delta 112.7 (d,
C-2), \delta 129.8 (s, C-1),
\delta 121.3 (d, C-6), \delta 120.9 (d,
C-5), \delta 55.6 (c, C-7),
\delta 66.3 (t, C-8), \delta 18.6 (s,
C-9), \delta 4.5 (2C, c, C-10),
\delta 25.9 (3C, c, C-11), \delta 173.8 (s,
C-1'), \delta 34.2 (t, C-2'),
\delta 27.2 (t, C-3'), \delta 22.4 (t,
C-4'), \delta 13.9 (c, C-5').
Hexanoato de
4-terc-butildimetilsililoxi-3-metoxibencilo:
^{1}H-RMN (CDCl_{3}, 399.945 MHz): \delta
6.82 (1H, s^{a}, H-2), \delta 6.79 (1H, d^{b},
11-6), \delta 6.79 (1H, d^{b},
H-5), \delta 3.77 (3H, s, H-7),
\delta 5.01 (2H, s, H-8), \delta 0.13 (6H, s,
2xCH_{3}), \delta 0.97 (9H, s, 3xCH_{3}), \delta 2.31 (2H,
t, 7.6 Hz, H-2'), \delta 1.61 (2H, q, 7.6, 7.6 Hz,
H-3'), \delta 1.27 (2H, m, 7.6, 7.2 Hz,
H-4'), \delta 1.27 (2H, m, 7.2, 6.8 Hz,
H-5'), \delta 0.85 (3H, t, 6.8 Hz, H- 6').
^{13}C-RMN (CDCl_{3}, 100.576 MHz): \delta
150.8 (s, C-4), \delta 145.0 (s,
C-3), \delta 112.4 (d, C-2),
\delta 129.4 (s, C-1), \delta 121.0 (d,
C-6), \delta 120.6 (d, C-5),
\delta 55.3 (c, C-7), \delta 66.0 (t,
C-8), \delta 18.3 (s, C-9),
\delta 4.8 (2C, c, C-10), \delta 25.6 (3C, c,
C-11), \delta 173.5 (s, C-1'),
\delta 34.2 (t, C-2'), \delta 24.5 (t,
C-3'), \delta 31.2 (t, C-4'),
\delta 22.2 (t, C-5'), \delta 13.8 (c,
C-6').
Heptanoato de
4-terc-butildimetilsililoxi-3-metoxibencilo:
^{1}H-RMN (CDCl_{3}, 399.945 MHz): \delta
6.83 (1H, s^{a}, H-2), \delta 6.79 (1H, d^{b},
H-6), \delta 6.79 (1H, d^{b},
H-5), \delta 3.78 (3H, s, H-7),
\delta 5.01 (2H, s, H-8), \delta 0.13 (6H, s,
2xCH_{3}), \delta 0.97 (9H, s, 3xCH_{3}), \delta 2.32 (2H,
t, 7.6 Hz, H-2'), \delta 1.61 (2H, q, 7.6, 7.2 Hz,
H-3'), \delta 1.25 (2H, m,
11-4'), \delta 1.25 (2H, m, H-5'),
\delta 1.25 (2H, m, 11-6'), \delta 0.85 (3H, t,
6.8 Hz, H-7'). ^{13}C-RMN
(CDCl_{3}, 100.576 MHz): \delta 150.8 (s, C-4),
\delta 145.0 (s, C-3), \delta 112.4 (d,
C-2), \delta 129.4 (s, C-1),
\delta 121.1 (d, C-6), \delta 120.7 (d,
C-5), \delta 55.3 (c, C-7),
\delta 66.1 (t, C-8), \delta 18.3 (s,
C-9), \delta 4.7 (2C, c, C-10),
\delta 25.6 (3C, c, C-11), \delta 173.6 (s,
C-1'), 8 34.3 (t, C-2'), \delta
24.8 (t, C-3'), \delta 28.7 (t,
C-4'), \delta 31.3 (t, C-5'),
\delta 22.4 (t, C-6'), 8 13.9 (c,
C-7').
Octanoato de
4-terc-butildimetilsililoxi-3-metoxibencilo:
^{1}H-RMN (CDCl_{3}, 399.945 MHz): \delta
6.82 (1H, s^{a}, H-2), \delta 6.78 (1H, d^{b},
H-6), \delta 6.78 (1H, d^{b},
H-5), \delta 3.77 (3H, s, H-7),
\delta 5.00 (2H, s, H-8), \delta 0.12 (6H, s,
2xCH_{3}), \delta 0.97 (9H, s, 3xCH_{3}), \delta 2.31 (2H,
t, 7.6 Hz, H-2'), \delta 1.61 (2H, q, 7.6, 7.3 Hz,
H-3'), \delta 1.25 (2H, m, H-4'),
\delta 1.25 (2H, m, H-5'), \delta 1.25 (2H, m,
11-6'), \delta 1.25 (2H, m, H-7'),
\delta 0.85 (3H, t, 6.8 Hz, H-8').
^{13}C-RMN (CDCl_{3}, 100.576 MHz): \delta
150.8 (s, C-4), \delta 145.0 (s,
C-3), \delta 112.4 (d, C-2),
\delta 129.4 (s, C-1), \delta 121.1 (d,
C-6), \delta 120.6 (d, C-5),
\delta 55.3 (c, C-7), \delta 66.0 (t,
C-8), \delta 18.3 (s, C-9),
\delta 4.8 (2C, c, C-10), \delta 25.6 (3C, c,
C-11), \delta 173.6 (s, C-1'),
\delta 34.3 (t,C-2'), \delta
24.9(t,C-3'), \delta 29.0
(t,C-4'), \delta 28.8 (t, C-5'),
\delta 31.5 (t, C-6'), \delta 22.5 (t,
C-7'), \delta 13.9 (c, C-8').
Nonanoato de
4-terc-butildimetilsililoxi-3-metoxibencilo:
^{1}H-RMN (CDCl_{3}, 399.945 MHz): \delta
6.82 (1H, s^{a}, H-2), \delta 6.78 (1H, d^{b},
H-6), \delta 6.78 (1H, d^{b},
H-5), \delta 3.77 (3H, s, H-7),
\delta 5.00 (2H, s, H-8), \delta 0.12 (6H, s,
2xCH_{3}), \delta 0.97 (9H, s, 3xCH_{3}), \delta 2.31 (2H,
t, 7.6 Hz, H-2'), \delta 1.61 (2H, q, 7.6, 7.2 Hz,
H-3'), \delta 1.25 (2H, m, H-4'),
\delta 1.25 (2H, m, H-5'), \delta 1.25 (2H, m,
H-6'), \delta 1.25 (2H, m, H-7'),
\delta 1.25 (2H, m, H-8'), \delta 0.85 (3H, t,
6.8 Hz, H-9'). ^{13}C-RMN
(CDCl_{3}, 100.576 MHz): \delta 150.8 (s, C-4),
\delta 145.0 (s, C-3), \delta 112.4 (d,
C-4), \delta 129.7 (s, C-1),
\delta 121.0 (d, C-6), \delta 120.6 (d,
C-5), \delta 55.3 (c, C-7),
\delta 66.0 (t, C-8), \delta 18.3 (s,
C-9), \delta 4.8 (2C, c, C-10),
\delta 25.6 (3C, c, C-11), \delta 173.6 (s,
C-1'), \delta 34.3 (t, C-2'),
\delta 24.9 (t, C-3'), \delta 29.0 (t,
C-4'), \delta 29.1 (t, C-5'),
\delta 29.0 (t, C-6'), \delta 31.7 (t,
C-7'), \delta 22.5 (t, C-8'),
\delta 13.9 (c, C-9').
Decanoato de
4-terc-butildimetilsililoxi-3-metoxibencilo:
^{1}H-RMN (CDCl_{3}, 399.945 MHz): \delta
6.82 (1H, s^{a}, H-2), \delta 6.78 (1H, d^{b},
H-6), \delta 6.78 (1H, d^{b},
H-5), \delta 3.77 (3H, s, H-7),
\delta 5.01 (2H, s, H-8), \delta 0.13 (6H, s,
2xCH_{3}), \delta 0.97 (9H, s, 3xCH_{3}), \delta 2.31 (2H,
t, 7.6 Hz, H-2'), \delta 1.61 (2H, q, 7.6, 7.2 Hz,
H-3'), \delta 1.25 (2H, m, H-4'),
\delta 1.25 (2H, m, H-5'), \delta 1.25 (2H, m,
H-6'), \delta 1.25 (2H, m, H-7'),
\delta 1.25 (2H, m, H-8'), \delta 1.25 (2H, m,
H-9'), \delta 0.85 (3H, t, 6.8 Hz,
H-10'). ^{13}C-RMN (CDCl_{3},
100.576 MHz): \delta 150.8 (s, C-4), \delta
145.0 (s, C-3), \delta 112.3 (d,
C-2), \delta 129.4 (s, C-1),
\delta 121.0 (d, C-6), \delta 120.6 (d,
C-5), \delta 55.3 (c, C-7),
\delta 66.0 (t, C-8), \delta 18.3 (s,
C-9), \delta -4.8 (2C, c, C-10),
\delta 25.6 (3C, c, C-11), \delta 173.6 (s,
C-1'), \delta 34.2 (t, C-2'),
\delta 24.9 (t, C-3'), \delta 29.0 (t,
C-4'), \delta 29.2 (t, C-5'),
\delta 29.3 (t, C-6'), \delta 29.2 (t,
C-7'), \delta 31.7 (t, C-8'),
\delta 22.5 (t, C-9'), \delta 14.0 (c,
C-10').
Undecanoato de
4-terc-butildimetilsililoxi-3-metoxibencilo:
^{1}H-RMN (CDCl_{3}, 399.945 MHz): \delta
6.83 (1H, s^{a}, H-2), \delta 6.80 (1H, d^{b},
H-6), \delta 6.80 (1H, d^{b},
H-5), \delta 3.79 (3H, s, H-7),
\delta 5.02 (2H, s, H-8), \delta 0.14 (6H, s,
2xCH_{3}), \delta 0.98 (9H, s, 3xCH_{3}), \delta 2.32 (2H,
t, 7.6 Hz, H-2'), \delta 1.62 (2H, q, 7.6, 7.2 Hz,
H-3'), \delta 1.25 (2H, m, H-4'),
\delta 1.25 (2H, m, H-5'), \delta 1.25 (2H, m,
H-6'), \delta 1.25 (2H, m, H-7'),
\delta 1.25 (2H, m, H-8'), \delta 1.25 (2H, m,
H-9'), \delta 1.25 (2H, m, H-10'),
\delta 0.86 (3H, t, 6.8 Hz, H-11').
^{13}C-RMN (CDCl_{3}, 100.576 MHz): \delta
150.9 (s, C-4), \delta 145.1 (s,
C-3), \delta 112.4 (d, C-2),
\delta 129.5 (s, C-1), \delta 121.1 (d,
C-6), \delta 120.7 (d, C-5),
\delta 55.4 (c, C-7), 8 66.1 (t,
C-8), \delta 18.4 (s, C-9),
\delta 4.7 (2C, c, C-10), \delta 25.6 (3C, c,
C-11), \delta 173.7 (s, C-1'),
\delta 34.3 (t, C-2'), \delta 24.9 (t,
C-3'), \delta 29.1 (t, C-4'),
\delta 29.3 (t, C-5'), \delta 29.5 (t,
C-6'), \delta 29.4 (t, C-7'),
\delta 29.2 (t, C-8'), \delta 31.8 (t,
C-9'), \delta 22.6 (t, C-10'),
\delta 14.1 (c, C-11').
Dodecanoato de
4-terc-butildimetilsililoxi-3-metoxibencilo:
^{1}H-RMN (CDCl_{3}, 399.945 MHz): \delta
6.82 (1H, s^{a}, H-2), \delta 6.78 (1H, d^{b},
H-6), \delta 6.78 (1H, d^{b},
H-5), \delta 3.77 (3H, s, H-7),
\delta 5.02 (2H, s, H-8), \delta 0.14 (6H, s,
2xCH_{3}), \delta 0.98 (9H, s, 3xCH_{3}), \delta 2.31 (2H,
t, 7.6 Hz, H-2'), \delta 1.61 (2H, q, 7.6, 7.2 Hz,
H-3'), \delta 1.25 (2H, m, H-4'),
\delta 1.25 (2H, m, H-5'), \delta 1.25 (2H, m,
H-6'), \delta 1.25 (2H, m, H-7'),
\delta 1.25 (2H, m, H-8'), \delta 1.25 (2H, m,
H-9'), \delta 1.25 (2H, m, H-10'),
\delta 1.25 (2H, m, H-11'), \delta 0.86 (3H,
t, 6.8 Hz, H-12'). ^{13}C-RMN
(CDCl_{3}, 100.576 MHz): \delta 150.8 (s, C-4),
\delta 145.0 (s, C-3), \delta 112.4 (d,
C-2), \delta 129.5 (s, C-1),
\delta 121.1 (d, C-6), \delta 120.7 (d,
C-5), \delta 55.4 (c, C-7),
\delta 66.1 (t, C-8), \delta 18.4 (s,
C-9), \delta -4.7 (2C, c, C-10),
\delta 25.6 (3C, c, C-11), \delta 173.7 (s,
C-1'), \delta 34.3 (t, C-2'),
\delta 24.9 (t, C-3'), \delta 29.1 (t,
C-4'), \delta 29.3 (t, C-5'),
\delta 29.5 (t, C-6'), \delta 29.4 (t,
C-7'), \delta 29.3 (t, C-8'),
\delta 29.2 (t, C-9'), \delta 31.8 (t,
C-10'), \delta 22.6 (t, C-l1'),
\delta 14.0 (c, C-12').
\newpage
Tridecanoato de
4-terc-butildimetilsililoxi-3-metoxibencilo:
^{1}H-RMN (CDCl_{3}, 399.945 MHz): \delta
6.82 (1H, s^{a}, H-2), \delta 6.77 (1H, d^{b},
H-6), \delta 6.77 (1H, d^{b},
H-5), \delta 3.76 (3H, s, H-7),
\delta 4.99 (2H, s, H-8), \delta 0.11 (6H, s,
2xCH_{3}), \delta 0.96 (9H, s, 3xCH_{3}), \delta 2.30 (2H,
t, 7.6 Hz, H-2'), \delta 1.60 (2H, q, 7.6, 7.2 Hz,
H-3'), \delta 1.25 (2H, m, H-4'),
\delta 1.25 (2H, m, H-5'), \delta 1.25 (2H, m,
H-6'), \delta 1.25 (2H, m, H-7'),
\delta 1.25 (2H, m, H-8'), \delta 1.25 (2H, m,
H-9'), \delta 1.25 (2H, m, H-10'),
\delta 1.25 (2H, m, H-11'), \delta 1.25 (2H,
m, H-12'), \delta 0.84 (3H, t, 6.8 Hz,
H-13'). ^{13}C-RMN (CDCl_{3},
100.576 MHz): \delta 150.8 (s, C-4), \delta
145.0 (s, C-3), \delta 112.4 (d,
C-2), \delta 129.4 (s, C-1),
\delta 121.0 (d, C-6), \delta 120.6 (d,
C-5), \delta 55.3 (c, C-7),
\delta 66.0 (t, C-8), \delta 18.3 (s,
C-9), 8-4.8 (2C, c,
C-10), \delta 25.6 (3C, c, C-11),
\delta 173.6 (s, C-1'), \delta 34.3 (t,
C-2'), \delta 24.9 (t, C-3'),
\delta 29.0 (t, C-4'), \delta 29.2 (t,
C-5'), \delta 29.5 (t, C-6'),
\delta 29.5 (t, C-7'), \delta 29.4 (t,
C-8'), \delta 29.5 (t, C-9'),
\delta 29.2 (t, C-10'), \delta 31.8 (t,
C-11'), \delta 22.6 (t, C-12'),
\delta 14.0 (c, C-13').
Tetradecanoato de
4-terc-butildimetilsililoxi-3-metoxibencilo:
^{1}H-RMN (CDCl_{3}, 399.945 MHz): \delta 6.84
(1H, s^{a}, H-2), \delta 6.80 (1H, d^{b},
H-6), \delta 6.80 (1H, d^{b},
H-5), \delta 3.79 (3H, s, H-7),
\delta 5.02 (2H, s, H-8), \delta 0.15 (6H, s,
2xCH_{3}), \delta 0.98 (9H, s, 3xCH_{3}), \delta 2.33 (2H,
t, 7.6 Hz, H-2'), \delta 1.63 (2H, q, 7.6, 7.2 Hz,
H-3'), \delta 1.25 (2H, m, H-4'),
\delta 1.25 (2H, m, H-5'), \delta 1.25 (2H, m,
H-6'), \delta 1.25 (2H, m, H-7'),
\delta 1.25 (2H, m, H-8'), \delta 1.25 (2H, m,
H-9'), \delta 1.25 (2H, m, H-10'),
\delta 1.25 (2H, m, H-11'), \delta 1.25 (2H, m,
H-12'), \delta 1.25 (2H, m,
H-13'), \delta 0.87 (3H, t, 6.8 Hz,
H-14'). ^{13}C-RMN (CDCl_{3},
100.576 MHz): \delta 150.8 (s, C-4), \delta
145.0 (s, C-3), \delta 112.4 (d,
C-2), \delta 129.5 (s, C-1),
\delta 121.7 (d, C-6), \delta 120.7 (d,
C-5), \delta 55.3 (c, C-7),
\delta 66.1 (t, C-8), \delta 18.3 (s,
C-9), \delta 4.7 (2C, c, C-10),
\delta 25.6 (3C, c, C-11), \delta 173.6 (s,
C-1'), \delta 34.3 (t, C-2'),
\delta 24.9 (t, C-3'), \delta 29.1 (t,
C-4'), \delta 29.2 (t, C-5'),
\delta 29.4 (t, C-6'), \delta 29.5 (t,
C-7'), \delta 29.6 (t, C-8'),
\delta 29.6 (t, C-9'), \delta 29.6 (t,
C-10'), \delta 29.3 (t, C- 11'), \delta 31.9 (t,
C-12'), \delta 22.6 (t, C-13'),
\delta 14.0 (c, C-14').
Hexadecanoato de
4-terc-butildimetilsililoxi-3-metoxibencilo:
^{1}H-RMN (CDCl_{3}, 399.945 MHz): \delta 6.84
(1H, s^{a}, H-2), \delta 6.80 (1H, d^{b},
H-6), \delta 6.80 (1H, d^{b},
H-5), \delta 3.79 (3H, s, H-7),
\delta 5.01 (2H, s, H-8), \delta 0.15 (6H, s,
2xCH_{3}), \delta 0.98 (9H, s, 3xCH_{3}), \delta 2.31 (2H,
t, 7.6 Hz, H-2'), \delta 1.61 (2H, q, 7.6, 7.2 Hz,
H-3'), \delta 1.25 (2H, m, H-4'),
\delta 1.25 (2H, m, H-5'), \delta 1.25 (2H, m,
H-6'), \delta 1.25 (2H, m, H-7'),
\delta 1.25 (2H, m, H-8'), \delta 1.25 (2H, m,
H-9'), \delta 1.25 (2H, m, H-10'),
\delta 1.25 (2H, m, H-11'), \delta 1.25 (2H, m,
H-12'), \delta 1.25 (2H, m,
H-13'), \delta 1.25 (2H, m,
H-14'), \delta 1.25 (2H, m,
H-15'), \delta 0.86 (3H, t, 6.8 Hz,
H-16'). ^{13}C-RMN (CDCl_{3},
100.576 MHz): \delta 150.8 (s, C-4), \delta
145.0 (s, C-3), \delta 112.4 (d,
C-2), \delta 129.5 (s, C-1),
\delta 121.1 (d, C-6), \delta 120.7 (d,
C-5), \delta 55.3 (c, C-7),
\delta 66.1 (t, C-8), \delta 18.3 (s,
C-9), \delta -4.7 (2C, c, C-10),
\delta 25.6 (3C, c, C-11), \delta 173.7 (s,
C-1'), \delta 34.3 (t, C-2'),
\delta 24.9 (t, C-3'), \delta 29.1 (t,
C-4'), \delta 29.2 (t, C-5'),
\delta 29.4 (t, C-6'), \delta 29.5 (t,
C-7'), \delta 29.6 (t, C-8'),
\delta 29.6 (t, C-9'), \delta 29.6 (t,
C-10'), \delta 29.6 (t, C-11'),
\delta 29.6 (t, C-12'), \delta 29.3 (t,
C-13'), \delta 31.9 (t, C-14'),
\delta 22.6 (t, C-15'), \delta 14.0 (c,
C-16').
8-Metilnonanoato de
4-terc-butildimetilsililoxi-3-metoxibencilo:
^{1}H-RMN (CDCl_{3}, 399.945 MHz): \delta 6.83
(1H, s^{a}, H-2), \delta 6.80 (1H, d^{b},
H-6), \delta 6.80 (1H, d^{b},
H-5), \delta 3.79 (3H, s, H-7),
\delta 5.02 (2H, s, H-8), \delta 0.14 (6H, s,
2xCH_{3}), \delta 0.98 (9H, s, 3xCH_{3}), \delta 2.32 (2H,
t, 7.6 Hz, H-2'), \delta 1.62 (2H, q, 7.6, 7.6 Hz,
H-3'), \delta 1.25 (2H, m, H-4'),
\delta 1.25 (2H, m, H-5'), \delta 1.25 (2H, m,
H-6'), \delta 1.13 (2H, q, 6.4 Hz,
H-7'), \delta 1.49 (1H, m, 6.4, 6.4 Hz,
H-8'), \delta 0.85 (6H, d, 6.4 Hz,
H-9'-10').
^{13}C-RMN (CDCl_{3}, 100.576 MHz): \delta
150.9 (s, C-4), \delta 145.1 (s,
C-3), \delta 112.5 (d, C-2),
\delta 129.5 (s, C-1), \delta 121.1 (d,
C-6), \delta 120.7 (d, C-5),
\delta 55.4 (c, C-7), \delta 66.2 (t,
C-8), \delta 18.4 (s, C-9),
\delta 4.7 (2C, c, C-10), \delta 25.7 (3C, c,
C-11), \delta 173.8 (s, C-1'),
\delta 34.4 (t, C-2'), \delta 25.0 (t,
C-3'), \delta 29.5 (t, C-4'),
\delta 29.1 (t, C-5'), \delta 27.2 (t,
C-6'), \delta 38.9 (t, C-7'),
\delta 27.9 (d, C-8'), \delta 22.6 (2C, c,
C-9'-l0').
(E)-8-Metil-6-nonenoato
de
4-terc-butildimetilsililoxi-3-metoxibencilo:
^{1}H-RMN (CDCl_{3}, 399.945 MHz): \delta 6.83
(1H, s^{a}, H-2), \delta 6.80 (1H, d^{b},
H-6), \delta 6.80 (1H, d^{b},
H-5), \delta 3.79 (3H, s, H-7),
\delta 5.02 (2H, s, H-8), \delta 0.14 (6H, s,
2xCH_{3}), \delta 0.98 (9H, s, 3xCH_{3}), \delta 2.33 (2H,
t, 7.5 Hz, H-2'), \delta 1.63 (2H, q, 7.5, 7.8 Hz,
H-3'), \delta 1.36 (2H, q, 7.8, 7.6 Hz,
H-4'), \delta 1.97 (2H, td, 7.6, 6.1 Hz,
H-5'), \delta 5.29 (1H, dt, 6.1, 15.2 Hz,
H-6'), \delta 5.36 (1H, q, 15.2, 5.9 Hz,
H-7'), \delta 2.20 (1H, dh, 5.9, 6.7 Hz,
H-8'), \delta 0.94 (6H, d, 6.7 Hz,
H-9'-10').
^{13}C-RMN (CDCl_{3}, 100.576 MHz): \delta
150.9 (s, C-4), \delta 145.1 (s,
C-3), \delta 112.4 (d, C-2),
\delta 129.3 (s, C-1), \delta 121.1 (d,
C-6), \delta 120.7 (d, C-5),
\delta 55.4 (c, C-7), \delta 66.2 (t,
C-8), \delta 18.4 (s, C-9),
\delta -4.7 (2C, c, C-10), \delta 25.7 (3C, c,
C-11), \delta 173.6 (s, C-1'),
\delta 34.2 (t, C-2'), \delta 24.4 (t,
C-3'), \delta 29.1 (t, C-4'),
\delta 32.1 (t, C-5'), \delta 126.4 (d,
C-6'), \delta 138.0 (d, C-7'),
\delta 30.9 (d, C-8'), \delta 22.6 (2C, c,
C-9'-10').
Paso
4
El último paso que se requiere para la síntesis
completa de los capsinoides es la desililación de los compuestos
anteriormente formados (V). Para ello se hace reaccionar a los
capsinoides sililados con una mezcla HC1 0.25 M/etanol en la
proporción 1:5. De esta manera se consigue la desprotección sin
observarse la ruptura del enlace éster.
Los capsinoides sililados (V) se han introducido
en un matraz de fondo redondo de 250 mL y se les adiciona 80 mL de
la mezcla de HC1 0.25M/Etanol (1:5). Se introduce atmósfera inerte
de argón y se mantiene la mezcla de reacción en agitación durante
18 horas. La reacción se sigue mediante CCF (eluyente: 20% acetato
de etilo, 80% hexano; revelador: anisaldehído).
Una vez terminada la reacción, se detiene con
salmuera. La fase acuosa se extrae 3 veces con acetato de etilo
(3x100 mL). Se reúnen las tres fases orgánicas, se secan con
MgSO_{4} anhidro y se concentran a presión reducida para eliminar
el acetato de etilo (temperatura ambiente). El aceite obtenido se
disuelve en una pequeña cantidad de acetato de etilo y se le
adiciona silica gel para formar la cabeza de la columna para la
purificación del producto final. El acetato de etilo se evapora a
presión reducida (temperatura ambiente).
La separación cromatográfica se realiza con
silica gel y la polaridad del eluyente es del 15% de acetato de
etilo en hexano. La separación cromatográfica se sigue por CCF
(eluyente: 20% acetato de etilo, 80% hexano; revelador:
anisaldehído). Finalmente se obtiene un aceite amarillento que
corresponde con los capsinoides (I) (rendimientos
77-87%).
Etanoato de
4-hidroxi-3-metoxibencilo:
^{1}H-RMN (CDCl_{3}, 399.945 MHz): \delta 6.86
(1H, d, 1.8 Hz, H-2), \delta 6.85 (1H, dd, 1.8,
6.4 Hz, H-6), \delta 6.88 (1H, d, 6.4 Hz,
H-5), \delta 3.88 (3H, s, H-7),
\delta 5.01 (2H, s, H-8), \delta 5.79 (1H, s,
OH), \delta 2.07 (3H, s, H-2')
^{13}C-RMN (CDCl_{3}, 100.576 MHz): \delta
145.8 (s, C-4), \delta 146.5 (s,
C-3), \delta 111.3 (d, C-2),
\delta 127.7 (s, C-1), \delta 122.0 (d,
C-6), \delta 114.3 (d, C-5),
\delta 55.9 (c, C-7), \delta 66.5 (t,
C-8), \delta 171.0 (s, C-1'),
\delta 21.0 (c, C-2'). UV \lambda_{max} 279
nm.
Propanoato de
4-hidroxi-3-metoxibencilo:
^{1}H-RMN (CDCl_{3}, 399.945 MHz): \delta
6.84 (1H, d, 1.8 Hz, H-2), \delta 6.83 (1H, dd, 1.
8, 7.3 Hz, H-6), \delta 6.86 (1H, d, 7.3 Hz,
H-5), \delta 3.84 (3H, s, H-7),
\delta 5.00 (2H, s, H-8), \delta 5.94 (1H, s,
OH), \delta 2.33 (2H, c, 7.6 Hz, H-2'), \delta
1.11 (3H, t, 7.6 Hz, H-3').
^{13}C-RMN (CDCl_{3}, 100.576 MHz): \delta
145.7 (s, C-4), \delta 146.5 (s,
C-3), \delta 111.2 (d, C-2),
\delta 127.8 (s, C-1), \delta 121.8 (d,
C-6), \delta 114.3 (d, C-5),
\delta 55.7 (c, C-7), \delta 66.2 (t,
C-8), \delta 174.3 (s, C-1'),
\delta 27.5 (t, C-2'), \delta 8.9 (c,
C-3'). UV \lambda_{max} 279 nm.
Butanoato de
4-hidroxi-3-metoxibencilo:
^{1}H-RMN (CDCl_{3}, 399.945 MHz): \delta 6.82
(1H, d, 1.8 Hz, H-2), \delta 6.81 (1H, dd, 1. 8,
7.6 Hz, H-6), \delta 6.84 (1H, d, 7.6 Hz,
H-5), \delta 3.82 (3H, s, H-7),
\delta 4.98 (2H, s, H-8), \delta 5.81 (1H, s,
OH), \delta 2.27 (2H, t, 7.6 Hz, H-2'), \delta
1.61 (2H, tc, 7.6, 7.3 Hz, H-3'), \delta 0.88 (3H,
t, 7.3 Hz, H-4'). ^{13}C-RMN
(CDCl_{3}, 100.576 MHz): \delta 145.7 (s, C-4),
\delta 146.5 (s, C-3), \delta 111.2 (d,
C-2), 8 127.8 (s, C-1), \delta
121.7 (d, C-6), \delta 114.3 (d,
C-5), \delta 55.7 (c, C-7),
\delta 66.1 (t, C-8), 8 173.5 (s,
C-1'), \delta 36.0 (t, C-2'),
\delta 18.2 (t, C-3'), \delta 13.4 (c,
C-4'). UV \lambda_{max} 279 nm.
Pentanoato de
4-hidroxi-3-metoxibencilo:
^{1}H-RMN (CDCl_{3}, 399.945 MHz): \delta
6.85 (1H, d, 1.8 Hz, H-2), \delta 6.84 (1H, dd, 1.
8, 7.3 Hz, H-6), \delta 6.87 (1H, d, 7.3 Hz,
H-5), \delta 3.85 (3H, s, H-7),
\delta 5.01 (2H, s, H-8), \delta 5.95 (1H, s,
OH), \delta 2.32 (2H, t, 7.6 Hz, H-2'), \delta
1.60 (2H, q, 7.6, 7.2 Hz, H-3'), \delta 1.32 (2H,
tc, 7.2, 7.2 Hz, H-4'), 8 0.88 (3H, t, 7.2 Hz,
H-5'). ^{13}C-RMN (CDCl_{3},
100.576 MHz): \delta 145.7 (s, C-4), \delta
146.5 (s, C-3), \delta 111.2 (d,
C-2), \delta 127.8 (s, C-1),
\delta 121.8 (d, C-6), \delta 114.3 (d,
C-5), \delta 55.7 (c, C-7),
\delta 66.2 (t, C-8), \delta 173.7 (s,
C-1'), \delta 33.9 (t, C-2'),
\delta 26.9 (t, C-3'), \delta 22.1 (t,
C-4'), \delta 13.5 (c, C-5'). UV
\lambda_{max} 279 nm.
Hexanoato de
4-hidroxi-3-metoxibencilo:
^{1}H-RMN (CDCl_{3}, 399.945 MHz): \delta
6.82 (1H, d, 1.8 Hz, H-2), \delta 6.81 (1H, dd, 1.
8, 6.7 Hz, H-6), \delta 6.84 (1H, d, 6.7 Hz,
H-5), \delta 3.86 (3H, s, H-7),
\delta 5.02 (2H, s, H-8), \delta 5.85 (1H, s,
OH), \delta 2.32 (2H, t, 7.6 Hz, H-2'), \delta
1.62 (2H, q, 7.6, 7.6 Hz, H-3'), \delta 1.27 (2H,
m, 7.6, 7.2 Hz, H-4'), 8 1.27 (2H, m, 7.2, 7.2 Hz,
H-5'), \delta 0.87 (3H, t, 7.2 Hz,
H-6'). ^{13}C-RMN (CDCl_{3},
100.576 MHz): \delta 145.7 (s, C-4), \delta
146.4 (s, C-3), \delta 111.2 (d,
C-2), \delta 127.9 (s, C-1),
\delta 121.9 (d, C-6), \delta 114.3 (d,
C-5), \delta 55.8 (c, C-7),
\delta 66.2 (t, C-8), \delta 173.8 (s,
C-1'), \delta 34.2 (t, C-2'),
\delta 24.5 (t, C-3'), \delta 31.2 (t,
C-4'), \delta 22.2 (t, C-5'),
\delta 13.8 (c, C-6'). UV \lambda_{max} 279
nm.
Heptanoato de
4-hidroxi-3-metoxibencilo:
^{1}H-RMN (CDCl_{3}, 399.945 MHz): \delta
6.85 (1H, d, 1.8 Hz, H-2), \delta 6.84 (1H, dd, 1.
8, 7.0 Hz, H-6), \delta 6.87 (1H, d, 7.0 Hz,
H-5), \delta 3.85 (3H, s, H-7),
\delta 5.01 (2H, s, H-8), \delta 6.03 (1H, s,
OH), \delta 2.31 (2H, t, 7.6 Hz, H-2'), \delta
1.60 (2H, q, 7.6, 7.6 Hz, H-3'), \delta 1.25 (2H,
m, H-4'), \delta 1.25 (2H, m,
H-5'), \delta 1.25 (2H, m, H-6'),
\delta 0.85 (3H, t, 7.2 Hz, H-7').
^{13}C-RMN (CDCl_{3}, 100.576 MHz): \delta
145.7 (s, C-4), \delta 146.5 (s,
C-3), \delta 111.2 (d, C-2),
\delta 127.9 (s, C-1), \delta 121.9 (d,
C-6), \delta 114.3 (d, C-5),
\delta 55.8 (c, C-7), \delta 66.2 (t,
C-8), \delta 173.8 (s, C-1'),
\delta 34.3 (t, C-2'), \delta 24.8 (t,
C-3'), \delta 28.7 (t, C-4'),
\delta 31.3 (t, C-5'), \delta 22.4 (t,
C-6'), \delta 13.9 (c, C-7'). UV
\lambda_{max} 279 nm.
Octanoato de
4-hidroxi-3-metoxibencilo:
^{1}H-RMN (CDCl_{3}, 399.945 MHz): \delta 6.86
(1H, d, 1.8 Hz, H-2), \delta 6.85 (1H, dd, 1.8,
6.7 Hz, H-6), \delta 6.88 (1H, d, 6.7 Hz,
H-5), \delta 3.85 (3H, s, H-7),
\delta 5.01 (2H, s, H-8), \delta 6.30 (1H, s,
OH), \delta 2.31 (2H, t, 7.6 Hz, H-2'), \delta
1.61 (2H, q, 7.6, 7.6 Hz, H-3'), \delta 1.25 (2H,
m, H-4'), \delta 1.25 (2H, m,
H-5'), \delta 1.25 (2H, m, H-6'),
\delta 1.25 (2H, m, H-7'), \delta 0.85 (3H, t,
6.8 Hz, H-8'). ^{13}C-RMN
(CDCl_{3}, 100.576 MHz): \delta 145.7 (s, C-4),
\delta 146.5 (s, C-3), \delta 111.2 (d,
C-2), \delta 127.9 (s, C-1),
\delta 121.9 (d, C-6), \delta 114.3 (d,
C-5), \delta 55.8 (c, C-7),
\delta 66.2 (t, C-8), \delta 173.8
(s,C-1'), \delta 34.3 (t, C-2'),
\delta 24.9 (t, C-3'), \delta 28.9 (t,
C-4'), \delta 28.8 (t, C-5'),
\delta 31.5 (t, C-6'), \delta 22.5 (t,
C-7'), \delta 13.9 (c, C-8'). UV
\lambda_{max} 279 nm.
Nonanoato de
4-hidroxi-3-metoxibencilo:
^{1}H-RMN (CDCl_{3}, 399.945 MHz): \delta
6.85 (1H, d, 1.8 Hz, H-2), \delta 6.84 (1H, dd, 1.
8, 7.0 Hz, H-6), \delta 6.87 (1H, d, 7.0 Hz,
H-5), \delta 3.86 (3H, s, H-7),
\delta 5.01 (2H, s, H-8), \delta 6.06 (1H, s,
OH), \delta 2.31 (2H, t, 7.6 Hz, H-2'), \delta
1.61 (2H, q, 7.6, 7.6 Hz, H-3'), \delta 1.25 (2H,
m, H-4'), \delta 1.25 (2H, m,
H-5'), \delta 1.25 (2H, m, H-6'),
\delta 1.25 (2H, m, H-7'), \delta 1.25 (2H, m,
H-8'), \delta 0.85 (3H, t, 6.8 Hz,
H-9'). ^{13}C-RMN (CDCl_{3},
100.576 MHz): \delta 145.7 (s, C-4), \delta
146.5 (s, C-3), \delta 111.2 (d,
C-2), \delta 127.9 (s, C-1),
\delta 121.9 (d, C-6), \delta 114.3 (d,
C-5), \delta 55.8 (c, C-7),
\delta 66.2 (t, C-8), \delta 173.8 (s,
C-1'), \delta 34.3 (t, C-2'),
\delta 24.9 (t, C-3'), \delta 29.0 (t,
C-4'), \delta 29.1 (t, C-5'),
\delta 29.0 (t, C-6'), \delta 31.7 (t,
C-7'), \delta 22.5 (t, C-8'),
\delta 14.0 (c, C-9'). UV \lambda_{max} 279
nm.
Decanoato de
4-hidroxi-3-metoxibencilo:
^{1}H-RMN (CDCl_{3}, 399.945 MHz): \delta
6.85 (1H, d, 1.8 Hz, H-2), 56.84 (1H, dd, 1.8, 6.4
Hz, H-6), 56.87 (1H, d, 6.4 Hz,
H-5), \delta 3.86 (3H, s, H-7),
\delta 5.01 (2H, s, H-8), \delta 5.76 (1H, s,
OH), \delta 2.31 (2H, t, 7.6 Hz, H-2'), \delta
1.61 (2H, q, 7.6, 7.2 Hz, H-3'), \delta 1.25 (2H,
m, H-4'), \delta 1.25 (2H, m,
H-5'), \delta 1.25 (2H, m, H-6'),
\delta 1.25 (2H, m, H-7'), \delta 1.25 (2H, m,
H-8'), \delta 1.25 (2H, m, H-9'),
\delta 0.86 (3H, t, 7.2 Hz, H-10').
^{13}C-RMN (CDCl_{3}, 100.576 MHz): \delta
145.7 (s, C-4), \delta 146.5 (s,
C-3), \delta 111.2 (d, C-2),
\delta 127.9 (s, C-1), \delta 121.9 (d,
C-6), \delta 114.3 (d, C-5),
\delta 55.8 (c, C-7), \delta 66.2 (t,
C-8), \delta 173.8 (s, C-1'),
\delta 34.3 (t, C-2'), \delta 24.9 (t,
C-3'), \delta 29.0 (t, C-4'),
\delta 29.2 (t, C-5'), \delta 29.3 (t,
C-6'), \delta 29.2 (t, C-7'),
\delta 31.8 (t, C-8'), \delta 22.6 (t,
C-9'), \delta 14.0 (c, C-10'). UV
\lambda_{max} 279 nm.
Undecanoato de
4-hidroxi-3-metoxibencilo:
^{1}H-RMN (CDCl_{3}, 399.945 MHz): \delta
6.86 (1H, d, 1.8 Hz, H-2), \delta 6.85 (1H, dd, 1.
8, 6.7 Hz, H-6), \delta 6.88 (1H, d, 6.7 Hz,
H-5), \delta 3.88 (3H, s, 11-7),
\delta 5.01 (2H, s, H-8), \delta 5.72 (1H, s,
OH), \delta 2.31 (2H, t, 7.6 Hz, H-2'), \delta
1.61 (2H, q, 7.6, 7.2 Hz, H-3'), \delta 1.25 (2H,
m, H-4'), \delta 1.25 (2H, m,
H-5'), \delta 1.25 (2H, m, H-6'),
\delta 1.25 (2H, m, 11-7'), \delta 1.25 (2H, m,
H-8'), \delta 1.25 (2H, m, H-9'),
\delta 1.25 (2H, m, H-10'), \delta 0.86 (3H, t,
7.0 Hz, H-11'). ^{13}C-RMN
(CDCl_{3}, 100.576 MHz): \delta 145.7 (s, C-4),
\delta 146.4 (s, C-3), \delta 111.2 (d,
C-2), \delta 128.0 (s, C-1),
\delta 121.9 (d, C-6), \delta 114.3 (d,
C-5), \delta 55.9 (c, C-7),
\delta 66.2 (t, C-8), \delta 173.8 (s,
C-1 '), \delta 34.3 (t, C-2'),
\delta 24.9 (t, C-3'), \delta 29.1 (t,
C-4'), \delta 29.2 (t, C-5'),
\delta 29.5 (t, C-6'), \delta 29.4 (t,
C-7'), \delta 29.2 (t, C-8'),
\delta 31.8 (t, C-9'), \delta 22.6 (t,
C-10'), \delta 14.0 (c, C-11').
UV \lambda_{max} 279 nm.
Dodecanoato de
4-hidroxi-3-metoxibencilo:
^{1}H-RMN (CDCl_{3}, 399.945 MHz): \delta
6.86 (1H, d, 1.8 Hz, H-2), \delta 6.85 (1H, dd, 1.
8, 6.1 Hz, H-6), \delta 6.88 (1H, d, 6.1 Hz,
H-5), \delta 3.87 (3H, s, H-7),
\delta 5.02 (2H, s, H-8), \delta 5.78 (1H, s,
OH), \delta 2.31 (2H, t, 7.6 Hz, H-2'), \delta
1.61 (2H, q, 7.6, 7.2 Hz, H-3'), \delta 1.25 (2H,
m, H-4'), \delta 1.25 (2H, m,
H-5'), \delta 1.25 (2H, m, H-6'),
\delta 1.25 (2H, m, H-7'), \delta 1.25 (2H, m,
H-8'), \delta 1.25 (2H, m, H-9'),
\delta 1.25 (2H, m, H-10'), \delta 1.25 (2H, m,
H-11'), \delta 0.87 (3H, t, 6.8 Hz,
H-12'). ^{13}C-RMN (CDCl_{3},
100.576 MHz): \delta 145.7 (s, C-4), \delta
146.5 (s, C-3), 8 111.2 (d, C-2),
\delta 127.9 (s, C-1), \delta 121.9 (d,
C-6), \delta 114.3 (d, C-5),
\delta 55.8 (c, C-7), \delta 66.2 (t,
C-8), \delta 173.8 (s, C-1'),
\delta 34.3 (t, C-2'), \delta 24.9 (t,
C-3'), \delta 29.1 (t, C-4'),
\delta 29.2 (t, C-5'), \delta 29.5 (t,
C-6'), \delta 29.5 (t, C-7'),
\delta 29.4 (t, C-8'), \delta 29.3 (t,
C-9'), \delta 31.8 (t, C-10'),
\delta 22.6 (t, C-11'), \delta 14.0 (c,
C-12'). UV \lambda_{max} 279 nm.
Tridecanoato de
4-hidroxi-3-metoxibencilo:
^{1}H-RMN (CDCl_{3}, 399.945 MHz): \delta
6.86 (1H, d, 1.8 Hz, H-2), \delta 6.85 (1H, dd, 1.
8, 6.7 Hz, H-6), 6 6.88 (1H, d, 6.7 Hz,
11-5), \delta 3.87 (3H, s, 11-7),
\delta 5.02 (2H, s, H-8), \delta 6.49 (1H, s,
OH), \delta 2.32 (2H, t, 7.6 Hz, H-2'), \delta
1.62 (2H, q, 7.6, 7.2 Hz, H-3'), \delta 1.25 (2H,
m, H-4'), \delta 1.25 (2H, m,
H-5'), \delta 1.25 (2H, m, H-6'),
\delta 1.25 (2H, m, 11-7'), \delta 1.25 (2H,
m,1-1-8'), \delta 1.25 (2H, m,
H-9'), \delta 1.25 (2H, m, H-10'),
\delta 1.25 (2H, m, H-11'), \delta 1.25 (2H, m,
H-12'), \delta 0.87 (3H, t, 6.8 Hz,
11-13'). ^{13}C-RMN (CDCl_{3},
100.576 MHz): \delta 145.7 (s, C-4), \delta
146.5 (s, C-3), \delta 111.2 (d,
C-2), \delta 127.9 (s, C-1),
\delta 121.9 (d, C-6), \delta 114.3 (d,
C-5), \delta 55.8 (c, C-7),
\delta 66.2 (t, C-8), \delta 173.8 (s,
C-1'), \delta 34.3 (t, C-2'),
\delta 24.9 (t, C-3'), \delta 29.1 (t,
C-4'), \delta 29.2 (t, C-5'),
\delta 29.4 (t, C-6'), \delta 29.5 (t,
C-7'), \delta 29.6 (t, C-8'),
\delta 29.5 (t, C-9'), \delta 29.3 (t,
C-10'), \delta 31.8 (t, C-11'),
\delta 22.6 (t, C-12'), \delta 14.0 (c,
C-13'). UV \lambda_{max} 279 nm.
Tetradecanoato de
4-hidroxi-3-metoxibencilo:
^{1}H-RMN (CDCl_{3}, 399.945 MHz):
86.86(1H,d, 1.8 Hz, H-2), \delta 6.85 (1H,
dd, 1.8, 5.6 Hz, H-6), \delta 6.88 (1H, d, 5.6
Hz, H-5), \delta 3.87 (3H, s,
H-7), \delta 5.02 (2H, s, H-8),
\delta 5.75 (1H, s, OH), \delta 2.31 (2H, t, 7.6 Hz,
H-2'), \delta 1.61 (2H, q, 7.6, 7.2 Hz,
H-3'), \delta 1.25 (2H, m, H-4'),
\delta 1.25 (2H, m, H-5'), \delta 1.25 (2H, m,
11-6'), \delta 1.25 (2H, m, H-7'),
\delta 1.25 (2H, m, H-8'), \delta 1.25 (2H, m,
H-9'), \delta 1.25 (2H, m, H-10'),
\delta 1.25 (2H, m, H-11'), \delta 1.25 (2H, m,
H-12'), 1.25 (2H, m, H-13'),
\delta 0.87 (3H, t, 6.8 Hz, H-14').
^{13}C-RMN (CDCl_{3}, 100.576 MHz): \delta
145.7 (s, C-4), \delta 146.4 (s,
C-3), \delta 111.2 (d, C-2),
\delta 127.9 (s, C- 1), \delta 121.9 (d, C-6),
\delta 114.3 (d, C-5), \delta 55.8 (c,
C-7), \delta 66.2 (t, C-8),
\delta 173.8 (s, C-1 '), \delta 34.3 (t,
C-2'), \delta 24.9 (t, C-3'),
\delta 29.1 (t, C-4'), \delta 29.2 (t,
C-5'), \delta 29.4 (t, C-6'),
\delta 29.5 (t, C-7'), \delta 29.6 (t,
C-8'), \delta 29.6 (t, C-9'),
\delta 29.6 (t, C-10'), \delta 29.3 (t,
C-11'), \delta 31.9 (t, C-12'),
\delta 22.6 (t, C-13'), \delta 14.0 (c,
C-14'). UV \lambda_{max} 279 nm.
Hexadecanoato de
4-hidroxi-3-metoxibencilo:
^{1}H-RMN (CDCl_{3}, 399.945 MHz): 8 6.85 (1H,
d, 1.8 Hz, H-2), \delta 6.84 (1H, dd, 1. 8, 5.9
Hz, H-6), \delta 6.87 (1H, d, 5.9 Hz,
11-5), \delta 3.87 (3H, s, H-7),
\delta 5.01 (2H, s,1-1-8),
\delta 5.77 (1H, s, OH), \delta 2.31 (2H, t, 7.6 Hz,
H-2'), \delta 1.61 (2H, q, 7.6, 7.2 Hz,
H-3'), \delta 1.25 (2H, m, H-4'),
\delta 1.25 (2H, m, H-5'), \delta 1.25 (2H, m,
H-6'), \delta 1.25 (2H, m, H-7'),
\delta 1.25 (2H, m, H-8'), \delta 1.25 (2H, m,
H-9'), \delta 1.25 (2H, m, H-10'),
\delta 1.25 (2H, m, H-11'), \delta 1.25 (2H, m,
H-12'), 1.25 (2H, m, H-13'),
\delta 1.25 (2H, m, H-14'), 1.25 (2H, m,
H-15'), \delta 0.86 (3H, t, 6.8 Hz,
H-16'). ^{13}C-RMN (CDCl_{3},
100.576 MHz): \delta 145.7 (s, C-4), \delta
146.5 (s, C-3), \delta 111.2 (d,
C-2), \delta 128.0 (s, C-1),
\delta 121.9 (d, C-6), \delta 114.3 (d,
C-5), \delta 55.9 (c, C-7),
\delta 66.2 (t, C-8), \delta 173.8 (s,
C-1'), \delta 34.3 (t, C-2'),
\delta 24.9 (t, C-3'), \delta 29.0 (t,
C-4'), \delta 29.1 (t, C-5'),
\delta 29.3 (t, C-6'), \delta 29.4 (t,
C-7'), \delta 29.5 (t, C-8'),
\delta 29.6 (t, C-9'), \delta 29.6 (t,
C-10'), \delta 29.6 (t, C-11'),
\delta 29.6 (t, C-12'), \delta 29.2 (t,
C-13'), \delta 31.9 (t, C-14'),
\delta 22.6 (t, C-15'), \delta 14.0 (c,
C-16'). UV \lambda_{max} 279 nm.
8-Metilnonanoato de
4-hidroxi-3-metoxibencilo
(Dihidrocapsiato): ^{1}H-RMN (CDCl_{3},
399.945 MHz): \delta 6.86 (1H, d, 1.8 Hz, H-2),
\delta 6.85 (1H, dd, 1.8, 5.9 Hz, H-6), \delta
6.88 (1H, d, 5.9 Hz, H-5), \delta 3.87 (3H, s,
H-7), \delta 5.02 (2H, s, H-8),
\delta 5.78 (1H, s, OH), \delta 2.32 (2H, t, 7.6 Hz,
H-2'), \delta 1.62 (2H, q, 7.6, 7.6 Hz,
H-3'), \delta 1.25 (2H, m, H-4'),
\delta 1.25 (2H, m, H-5'), \delta 1.25 (2H, m,
H-6'), \delta 1.12 (2H, q, 6.4 Hz,
H-7'), \delta 1.49 (1H, m, 6.4, 6.4 Hz,
H-8'), \delta 0.84 (6H, d, 6.4 Hz,
H-9'-10').
^{13}C-RMN (CDCl_{3}, 100.576 MHz): \delta
145.7 (s, C-4), \delta 146.5 (s,
C-3), \delta 111.2 (d, C-2), 8
127.9 (s, C-1), \delta 121.9 (d,
C-6), \delta 114.3 (d, C-5),
\delta 55.8 (c, C-7), \delta 66.2 (t,
C-8), 8 173.8 (s, C-1'), \delta
34.3 (t, C-2'), \delta 24.9 (t,
C-3'), \delta 29.4 (t, C-4'),
\delta 29.1 (t, C-5'), 8 27.1 (t,
C-6'), \delta 38.9 (t, C-7'),
\delta 27.9 (d, C-8'), \delta 22.5 (2C, c,
C-9'-10'). UV \lambda_{max} 279
nm.
(E)-8-Metil-6-nonenoato
de
4-hidroxi-3-metoxibencilo
(Capsiato): ^{1}H-RMN (CDCl_{3}, 399.945
MHz): \delta 6.84 (1H, d, 1.8 Hz, H-2), \delta
6.83 (1H, dd, 1.8, 7.2 Hz, H-6), \delta 6.86 (1H,
d, 7.2 Hz, H-5), \delta 3.86 (3H, s,
H-7), \delta 5.01 (2H, s, H-8),
\delta 5.67 (1H, s, OH), \delta 2.34 (2H, t, 7.5 Hz,
H-2'), \delta 1.64 (2H, q, 7.5, 7.8 Hz,
H-3'), \delta 1.38 (2H, q, 7.8, 7.6 Hz,
H-4'), \delta 1.98 (2H, dt, 7.6, 6.1 Hz,
H-5'), \delta 5.30 (H, dt, 15.2, 6.1 Hz,
H-6'), \delta 5.37 (1H, dd, 15.2, 5.9 Hz,
H-7'), \delta 2.21 (1H, dh, 5.9, 6.7 Hz,
H-8'), \delta 0.95 (6H, d, 6.7 Hz,
H-9'-10').
^{13}C-RMN (CDCl_{3}, 100.576 MHz): \delta
145.7 (s, C-4), \delta 146.4 (s,
C-3), \delta 111.2 (d, C-2),
\delta 127.9 (s, C-1), \delta 121.9 (d,
C-6), \delta 114.3 (d, C-5),
\delta 55.8 (c, C-7), \delta 66.2 (t,
C-8), \delta 173.8 (s, C-1'),
\delta 34.3 (t, C-2'), \delta 24.5 (t,
C-3'), \delta 29.1 (t, C-4'),
\delta 32.1 (t, C-5'), \delta 126.4 (d,
C-6'), \delta 138.1 (d, C-7'), 8
30.9 (d, C-8'), \delta 22.6 (2C, c,
C-9'-10'). UV \lambda_{max} 279
nm.
Claims (6)
1. Procedimiento de síntesis química de
capsinoides que comprende:
- a)
- Protección del grupo hidroxilo de la vainillina.
- b)
- Reducción del carbonilo de la vainillina protegida.
- c)
- Esterificación de la vainillina reducida y protegida con cloruros de acilo o cualquier otro agente acilante (anhídridos, derivados del azodicarboxilato de dialquilo, etc.).
- d)
- Desprotección de los capsinoides protegidos.
2. Procedimiento de síntesis química de
capsinoides, según reivindicación 1, caracterizado por la
obtención de la vainillina protegida con un grupo protector que
impide la esterificación de hidroxilo.
3. Procedimiento de síntesis química de
capsinoides, según reivindicaciones 1 y 2, caracterizado por
la reducción del carbonilo de la vainillina protegida para obtener
un alcohol primario sin la eliminación del grupo protector.
4. Procedimiento de síntesis química de
capsinoides, según reivindicaciones 1 a 3, caracterizado por
la esterificación de la vainillina reducida y protegida con
cloruros de acilo o cualquier otro agente acilante.
5. Procedimiento de síntesis química de
capsinoides, según reivindicaciones 1 a 4, caracterizado por
la desprotección de los capsinoides protegidos obtenidos dando
lugar a los capsinoides.
6. Compuestos con la estructura I, obtenidos
según reivindicaciones 1 a 5:
- Propanoato de 4-hidroxi-3-metoxibencilo (R = -CH_{2}CH_{3}).
- Butanoato de 4-hidroxi-3-metoxibencilo (R = -CH_{2}CH_{2}CH_{3}).
- Pentanoato de 4-hidroxi-3-metoxibencilo (R = -(CH_{2})_{3}-CH_{3}).
- Tridecanoato de 4-hidroxi-3-metoxibencilo (R = -(CH_{2})_{11}-CH_{3}).
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES200701099A ES2307420B1 (es) | 2007-04-24 | 2007-04-24 | Procedimiento de sintesis quimica de capsinoides. |
PCT/ES2008/000233 WO2008129094A1 (es) | 2007-04-24 | 2008-04-11 | Procedimiento de síntesis química de capsinoides |
US12/597,249 US20100256413A1 (en) | 2007-04-24 | 2008-04-11 | Method for the chemical synthesis of capsinoids |
EP08761480A EP2149548A1 (en) | 2007-04-24 | 2008-04-11 | Method for the chemical synthesis of capsinoids |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES200701099A ES2307420B1 (es) | 2007-04-24 | 2007-04-24 | Procedimiento de sintesis quimica de capsinoides. |
Publications (2)
Publication Number | Publication Date |
---|---|
ES2307420A1 ES2307420A1 (es) | 2008-11-16 |
ES2307420B1 true ES2307420B1 (es) | 2009-10-20 |
Family
ID=39875118
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES200701099A Active ES2307420B1 (es) | 2007-04-24 | 2007-04-24 | Procedimiento de sintesis quimica de capsinoides. |
Country Status (4)
Country | Link |
---|---|
US (1) | US20100256413A1 (es) |
EP (1) | EP2149548A1 (es) |
ES (1) | ES2307420B1 (es) |
WO (1) | WO2008129094A1 (es) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20180101445A (ko) * | 2016-01-07 | 2018-09-12 | 코나겐 인크. | 생합성 프로세스에 의해 캡시노이드를 제조하는 방법 |
EP3487986B1 (en) | 2016-07-19 | 2021-06-30 | Conagen Inc. | Method for the microbial production of specific natural capsaicinoids |
WO2021071136A2 (ko) * | 2019-10-07 | 2021-04-15 | 동국대학교 산학협력단 | 신규한 보존제 및 이의 제조방법 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6657052B1 (en) * | 1997-04-11 | 2003-12-02 | University Of Arkansas | Biomolecular labeling |
JP3345744B2 (ja) | 1998-03-04 | 2002-11-18 | 森永製菓株式会社 | エステル結合を有する新規なカプサイシノイド様物質 |
JP4560864B2 (ja) | 1999-11-30 | 2010-10-13 | 味の素株式会社 | 新規なカプサイシノイド様物質を含有する鎮痛剤、食品及び飼料 |
US9399030B2 (en) * | 2005-02-01 | 2016-07-26 | Ajinomoto Co., Inc. | Topically applied circulation enhancing agent and skin and hair cosmetic and bath agent containing the same |
WO2006088239A1 (en) * | 2005-02-18 | 2006-08-24 | Ajinomoto Co., Inc. | Production method of capsinoid by dehydrating condensation, stabilizing method of capsinoid, and capsinoid composition |
-
2007
- 2007-04-24 ES ES200701099A patent/ES2307420B1/es active Active
-
2008
- 2008-04-11 EP EP08761480A patent/EP2149548A1/en not_active Withdrawn
- 2008-04-11 US US12/597,249 patent/US20100256413A1/en not_active Abandoned
- 2008-04-11 WO PCT/ES2008/000233 patent/WO2008129094A1/es active Application Filing
Non-Patent Citations (1)
Title |
---|
WALPOLE, C.S.J. et al. "{}Analogues of Capsaicin with Agonist Activity as Novel Analgesic Agents; Structure-Activity Studies. 2. The Amide Bond B-Region"{}. Journal of Medicinal Chemistry, 1993, Volumen 36, páginas 2373-2380. Ver compuesto 2f; página 2373, columna 1; página 2377, columna 2. * |
Also Published As
Publication number | Publication date |
---|---|
ES2307420A1 (es) | 2008-11-16 |
WO2008129094A1 (es) | 2008-10-30 |
EP2149548A1 (en) | 2010-02-03 |
US20100256413A1 (en) | 2010-10-07 |
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