Studies on the syntheses of heterocyclic compounds. Part DCXX. Total synthesis of (±)-orientalidine and a positional isomer
作者:Tetsuji Kametani、Akira Ujiie、Masataka Ihara、Keiichiro Fukumoto
DOI:10.1039/p19750001822
日期:——
The total synthesis of (±)-orientalidine (2) was accomplished by treatment of (±)-demethylmecambridine (3) with methylene chloride and sodium hydride in dimethylformamide. 11-Hydroxy-12-hydroxymethyl-3,10-dimethoxy-1,2-methylenedioxyberbine (16) was synthesised from 1-(3-benzyloxy-4-methoxybenzyl)-1,2,3,4-tetrahydro-6-methoxy-7,8-methylenedioxyisoquinoline (11) by way of 11-benzyloxy-3,10-dimethoxy-1
通过用二甲基甲酰胺中的二氯甲烷和氢化钠处理(±)-脱甲基甲基溴(3)来完成(±)-Oralalidine(2)的总合成。由1-(3-苄氧基-4-甲氧基苄基)-1,2,3,4-四氢-6-甲氧基合成11-羟基-12-羟甲基-3,10-二甲氧基-1,2-亚甲基二氧基小ber碱(16) -7,8-亚甲基二氧基异喹啉(11)通过11-苄氧基-3,10-二甲氧基-1,2-亚甲基二氧基小ber碱(12)和相应的酚碱(15)。在相同的条件orientalidine合成下羟甲基化的berbines(5)和(16)的处理,得到相应的berbines(6)和(18)含有稠合米二氧杂环系统。