Parallel and four-step synthesis of natural-product-inspired scaffolds through modular assembly and divergent cyclization
作者:Hiroki Oguri、Haruki Mizoguchi、Hideaki Oikawa、Aki Ishiyama、Masato Iwatsuki、Kazuhiko Otoguro、Satoshi Ōmura
DOI:10.3762/bjoc.8.105
日期:——
By emulating the universal biosynthetic strategy, which employs modular assembly and divergent cyclizations, we have developed a four-step synthetic process to yield a collection of natural-product-inspired scaffolds. Modular assembly of building blocks onto a piperidine-based manifold 6, having a carboxylic acid group, was achieved through Ugi condensation, N-acetoacetylation and diazotransfer, leading
通过模仿采用模块化组装和发散环化的通用生物合成策略,我们开发了一个四步合成过程,以产生一系列受天然产物启发的支架。通过 Ugi 缩合、N-乙酰乙酰化和重氮转移,将构建块模块化组装到基于哌啶的歧管 6 上,具有羧酸基团,从而产生环化前体。The rhodium-catalyzed tandem cyclization and divergent cycloaddition gave rise to tetracyclic and hexacyclic scaffolds by the appropriate choice of dipolarophiles installed at modules 3 and 4. A different piperidine-based manifold 15 bearing an amino group was successfully applied to