All Eight Stereoisomeric <scp>d</scp>-Glyconic-δ-lactams: Synthesis, Conformational Analysis, and Evaluation as Glycosidase Inhibitors
作者:Yoshio Nishimura、Hayamitsu Adachi、Takahiko Satoh、Eiki Shitara、Hikaru Nakamura、Fukiko Kojima、Tomio Takeuchi
DOI:10.1021/jo000141j
日期:2000.8.1
gamma-lactone to lead to two epimers of delta-lactam from one parent gamma-lactone. Conformations of eight glycono-delta-lactams were examined by X-ray crystallographic analysis and molecular modeling. Analyses of conformation and glycosidase-inhibition provide useful information for the design of new glycosidase inhibitors.
已经开发了一种有效且通用的合成途径,用于合成所有八种立体异构D-糖基-δ-内酰胺。该策略包括作为关键步骤的立体发散性δ-内酰胺的形成,其具有构型保留或在起始C-内酰胺的C-4处反转,以从一个母体γ-内酯产生两种δ-内酰胺差向异构体。通过X射线晶体学分析和分子模型检查了八个糖基-δ-内酰胺的构象。构象和糖苷酶抑制分析为设计新型糖苷酶抑制剂提供了有用的信息。