A tandem Friedel–Crafts based method for the construction of a tricyclic pyrroloquinoline skeleton and its application in the synthesis of ammosamide B
作者:Yohei Takayama、Tatsuya Yamada、Shinya Tatekabe、Kazuo Nagasawa
DOI:10.1039/c3cc42463d
日期:——
A total synthesis of ammosamide B (2), a member of the pyrroloquinoline alkaloid family isolated from marine Streptomyces, is described. The characteristic core tricyclic structure of 2 was constructed using a novel, tandem Friedel-Crafts reaction sequence to transform the symmetric tetra-amino substituted benzene derivative 7 into the tricyclic pyrroloquinoline product 8, which serves as an important
描述了从海洋链霉菌分离出的吡咯并喹啉生物碱家族成员氨酰胺B(2)的总合成。使用新颖的串联Friedel-Crafts反应序列构建2的特征性核心三环结构,以将对称的四氨基取代的苯衍生物7转化为三环吡咯并喹啉产物8,该产物在合成N的途径中起着重要的中间作用。目标天然产物。