Synthetic studies on pentacyclic aromatic alkaloids, kuanoniamine A, 11-hydroxyascididemin, and neocalliactine acetate
作者:Yoshiyasu Kitahara、Shinsuke Nakahara、Takanobu Yonezawa、Masanori Nagatsu、Yoshikazu Shibano、Akinori Kubo
DOI:10.1016/s0040-4020(97)10153-3
日期:1997.12
A pentacyclic aromatic alkaloid, kuanoniamine A (6) was synthesized in three steps from 6-methoxybenzothiazole-4,7-dione (8) and 2-aminoacetophenone (9). 11-Hydroxyascididemin (4) was prepared from 5,8-quinolinedione (13, 14) or 1,4-acridinedione (20). The structure of neocalliactine acetate, a derivative of calliactine, was determined to be 5 by total synthesis from 6-methoxy-5,8-quinolinedione (28)
五环芳族生物碱,宽胺碱A(6)分三步合成,分别由6-甲氧基苯并噻唑-4,7-二酮(8)和2-氨基苯乙酮(9)组成。由5,8-喹啉二酮(13、14)或1,4-ac啶二酮(20)制备11-羟基天冬酰胺(4)。醋酸neocalliactine的结构,calliactine的衍生物,被确定为5通过全合成从6-甲氧基-5,8-二quinolinedione(28)和2-氨基-5-甲氧基苯乙酮(29)。