CN1069722A - 4-脱甲氧-4-氨基柔毛霉素酮和其制备方法 - Google Patents
4-脱甲氧-4-氨基柔毛霉素酮和其制备方法 Download PDFInfo
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Abstract
上面式II的新蒽环酮及其制备方法,该新蒽环酮
是用于制备抗肿瘤苷的有用中间体。
Description
本发明涉及新的式Ⅱ4-脱甲氧-4-氨基柔毛霉素酮,其是制备抗肿瘤的蒽环苷的有用中间体,本发明还涉及其制备方法:
Ⅱ
式Ⅱ的柔毛霉素酮衍生物可通过下面所述方法制备:
(a)通过氢解除去式(Ⅴ)洋红霉素酮(Carminomycinone)的7α-羟基;
Ⅴ
(b)在N,N-二异丙基乙胺和催化量的4-二甲氨基吡啶存在下,使生成的4-脱甲氧基-7-脱氧正定霉素酮(式Ⅵ)与4-氟苯磺酰氯反应;
Ⅵ
(c)使生成的4-脱甲氧基-4-O-〔4-氟苯磺酰基〕-7-脱氧正定霉素酮(式Ⅶ)与苄胺反应;
(d)通过催化氢化,从生成的4-脱甲氧基-4-苄氨基-7-脱氧正定霉素酮(式Ⅷ)中脱去苄基;
(e)通过用三氟乙酸酐处理,将得到的4-脱甲氧基-4-氨基-7-脱氧正定霉素酮(式Ⅸ)的-4-氨基加以保护,
(f)重新把7α-羟基引入到生成的式(Ⅻ)化合物中,得正定霉素酮衍生物(式Ⅱ)的受保护衍生物(式ⅩⅢ);
Ⅻ
Ⅷ
(g)从受保护的衍生物(式ⅩⅢ)中脱去4-氨基保护基,得到正定霉素酮衍生物(式Ⅱ);
图示Ⅰ
-
上述方法用上面的图示Ⅰ详细说明。该方法的起始化合物为天然的洋红霉素酮(Carminomycinone)式(Ⅴ)。步骤(b)的磺酰化反应仅生成取代的C-4-O-磺酰基衍生物(Ⅶ),其余的C-6-OH和C-11-OH均不受影响。应该强调指出,仅在所述条件下,获得了未曾预料到的选择性。
反应(c)在蒽环化学中是新的反应,反应(c)可能是由于醌基团和C-4位置上的4-氟苯磺酰基拉电子作用的结果。该反应最好在四氢呋喃中于室温下进行。步骤(e)用三氟乙酸酐反应。步骤(f)可以按照C.M.Wong等所述方法〔Can.J.Chem.,51,446(1973)〕进行。用乙二醇处理,可以有效地保护4-脱甲氧基-4-(受保护的氨基)-7-脱氧正定霉素酮(式Ⅻ)的13-酮基;将生成的化合物7-位溴化;水解7-溴和13-缩酮基,得到4-脱甲氧基-4-N-三氟乙酰氨基正定霉素酮(式ⅩⅢ),
Ⅷ
溴化反应一般在2,2′-偶氮双(异丁腈)存在下用溴或N-溴代琥珀酰亚胺进行。
用以下实例详细说明本发明
实例1
4-脱甲基-7-脱氧正定霉素酮(Ⅵ)
将1.5克4-脱甲基正定霉素酮(Ⅴ)溶于100毫升二噁烷和100毫升乙醇的混合液中,并于室温,在0.3克5%钯-硫酸钡存在下进行氢化3小时。过滤后减压除去溶剂,得到接近定量产率的4-脱甲基-7-脱氧正定霉素酮(Ⅵ)。
经硅胶F254(Merck)薄层层析,用甲苯和丙酮(9∶1,按体积计)的混合液为展开剂,Rf=0.30。
实例2
4-脱甲基-4-O-(4-氟苯磺酰基)-7-脱氧正定霉素酮(Ⅶ)
在室温和搅拌下,向1.0克4-脱甲基-7-脱氧正定霉素酮(Ⅵ)在200毫升无水二氯甲烷的溶液(含0.52毫升N,N-二异丙基乙胺和催化量的4-二甲基氨基吡啶)中加入0.52克4-氟苯磺酰氯。30分钟后完成反应,反应混合物依次用0.1N盐酸水溶液和水洗涤。有机溶液用无水硫酸钠干燥,过滤,并在减压下除去溶剂。粗产品用少量甲苯溶解并结晶,得0.6克纯的式Ⅵ4-O-磺酸酯衍生物。母液经柱层析纯化,用甲苯和丙酮的混合液为洗脱剂,得到另外的0.3克产品。产率为80%。
经硅胶F254(Merck)薄层层析,用甲苯和丙酮(9∶1,按体积计)的混合液展开,Rf=0.26。
场解吸质谱〔M+〕526
紫外光谱λ最大(甲醇):524,490nm
1H核磁共振(200MHz,CDCl3)δ:
13.43,13.36(s,2H,11-OH,6-OH)
8.38(dd,J=1.3,7.9Hz,1H,1-H)
7.80(dd,J=7.9,8.1Hz,1H 2-H)
7.62(dd,J=1.3,8.1Hz,1H,3-H)
3.77(s,1H,9-OH)
3.1-2.8(m,4H,7-CH2,10-CH2)
2.38(s,3H,COCH3)
2.0-1.9(m,2H,8-CH2)
实例3
4-脱甲氧基-4-苄氨基-7-脱氧正定霉素酮(Ⅷ)
将0.8克化合物Ⅶ溶于100毫升四氢呋喃中,向其中加入0.5毫升苄胺。混合物在搅拌下于40℃保持36小时,然后加入50毫升1N盐酸水溶液和100毫升二氯甲烷。有机相用水洗涤二次,并用无水硫酸钠干燥。减压除去溶剂。粗产品经快速层析法层析,以甲苯和丙酮的混合液作为洗脱剂,得0.48克4-脱甲氧基-4-苄氨基-7-脱氧正定霉素酮(Ⅷ),产率为69%。
经硅胶254(Merck)薄层层析,用甲苯和丙酮(9∶1,按体积计)的混合液展开,Rf=0.28。
场解吸质谱〔M+〕457
紫外光谱λ最大(甲醇):548nm
1H核磁共振(200MHz,CDCl3)δ:
13.58(s,2H,6-OH,11-OH)
9.86(t,J=5.7Hz,1H,NH-CH2Ph)
7.64(d,J=7.3Hz,1H,1-H)
7.49(dd,J=7.3,8.3Hz,1H,2-H)
7.4-7.2(m,5H,NHCH2Ph)
7.00(d,J=8.3Hz,1H,3-H)
4.60(d,J=5.7Hz,2H,NHCH2Ph)
3.1-2.9(m,4H,10-CH2,7-CH2)
2.37(s,3H,COCH3)
2.0-1.9(m,2H,8-CH2)
实例4
4-脱甲氧基-4-氨基-7-脱氧正定霉素酮(Ⅸ)
将0.45克4-脱甲氧基-4-苄氨基-7-脱氧正定霉素酮(Ⅷ)溶于40毫升乙醇、20毫升乙酸和0.4毫升37%盐酸水溶液的混合液中。向其中加入0.2克5%钯/硫酸钡催化剂,混合物在室温和1个大气压下氢化1小时。随后滤去催化剂,减压蒸去溶剂。粗产品经快速层析法层析,用甲苯和丙酮的混合液作为洗脱剂,得0.2克4-脱甲氧基-4-氨基-7-脱氧正定霉素酮(Ⅸ),产率为75%。
经硅胶F254(Merck)薄层层析,用甲苯和丙酮(9∶1,按体积计)的混合液展开,Rf=0.17。
场解吸质谱〔M+〕367
紫外λ最大(甲醇):536,508nm
1H核磁共振(200MHz,CDCl3)δ:
13.62,13.55(s,2H,11-OH,6-OH)
7.64(d,J=7.7Hz,1-H)
7.46(dd,J=7.7,8.3Hz,1H,2-H)
6.93(d,J=8.3Hz,1H,3-H)
6.8-7.0(宽峰,2H,NH2)
3.83(s,1H,9-OH)
3.1-2.8(m,4H,7-CH2,10-CH2)
2.37(s,3H,COCH3)
2.0-1.9(m,2H,8-CH2)
实例5
4-脱甲氧基-4-N-三氟乙酰氨基-7-脱氧正定霉素酮(Ⅻ)
将0.2克4-脱甲氧基-4-氨基-7-脱氧正定霉素酮(Ⅸ)溶于20毫升无水二氯甲烷中,于0℃冷却,向其中加入0.3毫升三氟乙酸酐。10分钟后再加入碳酸氢钠水溶液。有机相用水洗涤二次,分出,用无水硫酸钠干燥。减压除去溶剂,得定量的化合物Ⅻ。
经硅胶F254(Merck)薄层层析,用甲苯和丙酮(9∶1,按体积计)的混合液展开,Rf=0.32。
实例6
4-脱甲氧基-4-N-三氟乙酰氨基正定霉素酮(ⅩⅢ)
在0.015克对甲苯碘酸存在下,用迪安-斯达克装置,将0.2克化合物Ⅻ、15毫升苯和0.5毫升乙二醇组成的悬浮液回流4小时。混合物冷却后,用碳酸氢钠水溶液和水依次洗涤,然后蒸发至干,得0.2克所需的缩酮。
后者于40℃溶于125毫升二氯甲烷中,并在0.25克2,2′-偶氮二异丁腈存在下用溴(1.7毫升0.6M二氯甲烷溶液)处理。
3小时后使混合物冷却,并用碳酸氢钠水溶液萃取,然后用二氯甲烷洗涤二次,减压除去溶剂。残留物于0℃溶于3毫升三氟乙酸和0.3毫升水中并搅拌1小时,再用二氯甲烷萃取。
有机相依次用碳酸氢钠水溶液和水洗涤。分出有机相,经无水硫酸钠干燥并减压蒸发,得0.1克4-脱甲氧基-4-N-三氟乙酰氨基正定霉素酮(ⅩⅢ),产率为48%。
经硅胶F254(Merck)薄层层析,用二氯甲烷和丙酮(95∶5,按体积计)的混合液展开,Rf=0.23。
场解吸质谱〔M+〕479
实例7
4-脱甲氧基-4-氨基正定霉素酮(Ⅱ)
将0.1克4-氨基受保护的衍生物ⅩⅢ倾入20毫升甲醇和10毫升碳酸氢钠水溶液的混合液中,并搅拌1小时,然后向其中加入盐酸水溶液和二氯甲烷。分出有机层,用水洗涤,减压除去溶剂,得0.8克4-脱甲氧基-4-氨基正定霉素酮(Ⅱ)。
经硅胶F254(Merck)薄层层析,用二氯甲烷和丙酮(95∶5,按体积计)的混合液展开,Rf=0.10。
场解吸质谱〔M+〕383
1H核磁共振谱(200MHz,CDCl3)δ:
14.00(s,1H,6-OH)
13.52(s,1H,11-OH)
7.64(d,J=8.0Hz,1H,1-H)
7.46(t,J=8.0Hz,1H,2-H)
6.93(d,J=8.0Hz,1H,3-H)
6.80(宽峰,2H,4-NH2)
5.32(ddd,J=2.0,4.8,4.8Hz,1H,7-H)
4.54(s,1H,9-OH)
3.74(d,J=4.8Hz,1H,7-OH)
3.17(dd,J=2.0,19.0Hz,1H,10e-H)
2.92(d,J=19.0Hz,1H,10ax-H)
2.45(s,3H,COCH3)
2.35(ddd,J=2.0,2.0,15.0Hz,1H,8e-H
2.14(dd,J=4.8,15.0Hz,1H,8ax-H)
Claims (1)
1、制备正定霉素酮(式Ⅱ)的方法
Ⅱ
该方法包括:
(a)通过氢解脱去洋红霉素酮(式Ⅴ)的7α-羟基,
Ⅴ
(b)使得到的4-脱甲基-7-脱氧正定霉素酮(式Ⅵ)与4-氟苯磺酰氯在N,N-二异丙基乙胺和催化量的4-二甲基氨基吡啶存在下反应,
(c)使得到的4-脱甲氧基-4-[4-氟苯磺酰基]-7-脱氧正定霉素酮(式Ⅶ)与苄胺反应,
(d)通过催化氢化,从得到的4-脱甲氧基-4-苄氨基-7-脱氧正定霉素酮(式Ⅷ)脱去苄基,
(e)通过用三氟乙酸处理,将得到的4-脱甲氧基-4-氨基-7-脱氧正定霉素酮(式Ⅸ)的4-氨基加以保护,
Ⅸ
(f)重新引入7α-羟基到生成的式(Ⅻ)化合物中,得正定霉素酮衍生物(式Ⅱ)的受保护衍生物(式XⅢ),
Ⅷ
(g)从受保护的衍生物(XⅢ)中脱去4-氨基保护基,得到正定霉素酮衍生物(式Ⅱ)
Ⅱ
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GB8709353 | 1987-04-21 | ||
GB878709353A GB8709353D0 (en) | 1987-04-21 | 1987-04-21 | 4-demethoxy-4-amino-anthracyclines |
GB888803302A GB8803302D0 (en) | 1988-02-12 | 1988-02-12 | Conversion of 4-demethoxy-4-amino anthracyclinones into 4-demethoxy-anthracyclinones |
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CN92110559A Expired - Fee Related CN1024545C (zh) | 1987-04-21 | 1992-09-12 | 4-脱甲氧-4-氨基正定霉素酮的制备方法 |
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GB8904794D0 (en) * | 1989-03-02 | 1989-04-12 | Erba Carlo Spa | Process for preparing anthracyclinones |
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