Synthesis of the New Furo[3,2-h]isoquinoline Alkaloid, TMC-120B from Aspergillus ustus
作者:Teppei Kumemura、Tominari Choshi、Aki Hirata、Mitsuko Sera、Yohhei Takahashi、Junko Nobuhiro、Satoshi Hibino
DOI:10.1248/cpb.53.393
日期:——
A total synthesis of a new furo[3,2-h]isoquinoline alkaloid TMC120-B (2), isolated from Aspergillus ustus together with two related compounds, has been completed in sixteen steps. The key step is the synthesis of the appropriate 3,7,8-trisubstituted isoquinoline framework (23) based on a thermal electrocyclic reaction of the 1-aza 6pi-electron system involving the benzene double bond. In addition,
从uspergillus ustus中分离出的新呋喃并[3,2-h]异喹啉碱生物碱TMC120-B(2)和两种相关化合物已通过十六个步骤完成了合成。关键步骤是根据涉及苯双键的1-氮杂6π电子体系的热电环反应,合成适当的3,7,8-三取代异喹啉骨架(23)。另外,新进行了该体系的微波辅助的电环反应。