申请人:E.I. DU PONT DE NEMOURS AND COMPANY
公开号:EP0083093A2
公开(公告)日:1983-07-06
Process for preparing analgesic and narcotic antagonistic isoquinolines comprising:
(a) contacting and reacting a lithiated anisole or alkyl phenyl ether, optionally substituted at the 3-position to the lithium atom, with a 4-piperidone to yield a 4-aryl-4-piperidinol;
(b) dehydrating the piperidinol to a 4-aryl-1,2,3,6-tetrahydropyridine;
(c) metalating and acylating the 1,2,3,6-tetrahydropyridine to yield a 1-(4-aryl- 1,2,3,4-tetrahydropyrid-4-yl) -4-hydroxy-1-butanone;
(d) reducing the ketone moiety of the butanone to yield a 5-aryl-7-oxa-2-azabicyclo[3.2.1]-octane-6-propanol;
(e) converting the alcohol moiety of the propanol to L to yield a 5-aryl-6-[3-(L)propyl]-7-oxa-2-azabicyclo[3.2.1]-octane in which L is a leaving group selected from the group consisting of -Cl, -Br, -1, p-MeC6H4SO3- and MeS03-.
(f) opening the amino furan ring of the bicyclooctane to yield a 4-(L)-1-(4-aryl-1,2,3,4-tetrahydropyrid-4-yl)-1-butanol derivative;
(g) closing the 6-carbon ring of the butanol derivative by intramolecular reaction of the enamine and leaving group to yield a 4a-aryl-2,3,4,4a,5,6,7,8-octahydro-5-isoquinolinol or derivative thereof; and
(h) reducing the enamine double bond of the octahy- dro-5-isoquinolinol or derivative thereof to yield a 4a-aryldecahydro-5-isoquinolinol or derivative thereof and (i) cyclizing the decahydro-5-isoquinolinol or derivative to yield a 2,3,4,4a,5,6,7,7a-octahydro-1H-benzofuro-[3,2-e]isoquinoline, or,
(h') cyclizing the octahydro-5-isoquinolinol or derivative thereof to yield a 2,3,5,6,7,7a-hexahydro-1H-benzofuro-[3,2-e]isoquinoline and (i') reducing the enamine double bond of the isoquinoline.
制备镇痛和麻醉拮抗剂
异喹啉的工艺,包括
(a)
锂化
苯甲醚或烷基苯基醚(可选择在 3 位取代
锂原子)与
4-哌啶酮接 触和反应,生成 4-芳基-4-
哌啶醇;
(b) 将
哌啶醇脱
水生成 4-芳基-
1,2,3,6-四氢吡啶;
(c) 将
1,2,3,6-四氢吡啶金属化和酰化,生成 1-(4-芳基-
1,2,3,4-四氢吡啶-4-基) -4- 羟基-1-
丁酮;
(d) 还原
丁酮的酮基,得到 5-芳基-7-氧杂-2-氮杂
双环[3.2.1]辛烷-6-
丙醇;
(e) 将
丙醇的醇基转化为 L,得到 5-芳基-6-[3-(L)丙基]-7-氧杂-
2-氮杂双环[3.2.1]-
辛烷,其中 L 是选自-Cl、-Br、-1、p-MeC6H4SO3- 和 MeS03-的离去基团。
(f) 打开双
环辛烷的
氨基
呋喃环,生成 4-(L)-1-(4-芳基-
1,2,3,4-四氢吡啶-4-基)-
1-丁醇衍
生物;
(g) 通过烯胺和离去基团的分子内反应封闭
丁醇衍
生物的 6 碳环,生成 4a-芳基-2,
3,4,4a,5,6,7,8-八氢-5-
异喹啉醇或其衍
生物;以及
(h) 还原八氢-5-
异喹啉醇或其衍
生物的烯胺双键,生成 4a- 芳基十氢-5-
异喹啉醇或其衍
生物,以及 (i) 环化十氢-5-
异喹啉醇或其衍
生物,生成 2,3,4,4a,5,6,7,7a-八氢-1H-
苯并呋喃-[3,2-e]
异喹啉,或、
(h') 环化八氢-5-
异喹啉醇或其衍
生物,生成 2,3,5,6,7,7a-六氢-1H-
苯并呋喃并[3,2-e]
异喹啉, (i') 还原
异喹啉的烯胺双键。