Studies on tetrahydroisoquinolines. IX. The synthesis of (.+-.)-domesticine and a related (.+-.)-homoaporphine via p-quinol acetates.
作者:OSAMU HOSHINO、HIROSHI HARA、NOBUAKI SERIZAWA、BUNSUKE UMEZAWA
DOI:10.1248/cpb.23.2048
日期:——
Acid (conc. H2SO4-Ac2O) treatment of the p-quinol acetate derived from (±)-1, 2, 3, 4-tetrahydro-7-hydroxy-6-methoxy-2-methyl-1-(3', 4'-methylenedioxy-benzyl or -phenethyl)-isoquinoline (VIII or IX) gave the corresponding 1-monoacetoxy-and 1, 4-diacetoxy-aporphine (XIX, XXa, and XXb) or-homoaporphine (XXIII and XXIV), respectively. Hydrolysis of XIX afforded (±)-domesticine (VI).
酸(conc.H2SO4-Ac2O)处理由(±)-1,2,3,4-四氢-7-羟基-6-甲氧基-2-甲基-1-(3',4'-亚甲二氧基-苄基或-苯乙基)-异喹啉(VIII 或 IX)衍生的对喹啉乙酸酯,分别得到相应的 1-单乙酰氧基和 1,4-二乙酰氧基-卟吩(XIX,XXa 和 XXb)或高卟吩(XXIII 和 XXIV)。XIX 的水解产物是 (±)- Domesticine (VI)。