作者:Christian Weimar、Silvia von Angerer、Wolfgang Wiegrebe
DOI:10.1002/ardp.2503241116
日期:1991.11
C‐13‐alkylated methoxy‐8H‐dibenzo[a,g]quinolizin‐8‐ones 2a‐e were synthesized by photocyclization of 1‐alkylidene‐N‐benzoyl‐1,2,3,4‐tetrahydroisoquinolines 1. Moreover, condensation of 1,2,3,4‐tetrahydro‐6,7‐dirnethoxy‐1‐oxo‐isoquinoline with homophthalic acid anhydrides 7a and b leads to the C‐13‐alkylated 8‐oxoberbines 2b and c and improves the yields compared with those of the photocyclization method
C-13-烷基化甲氧基-8H-二苯并[a,g]喹啉-8-酮2a-e是通过1-亚烷基-N-苯甲酰基-1,2,3,4-四氢异喹啉1的光环化合成的。此外,缩合1,2,3,4-四氢-6,7-二乙氧基-1-氧代-异喹啉与高邻苯二甲酸酐 7a 和 b 生成 C-13-烷基化 8-oxoberbines 2b 和 c 并提高产率光环化方法。