Toward the Synthesis of Cobyric Acid. Enantioselective Syntheses of Completely Differentiated Ring D Synthons
作者:Hui Wang、Carlos Tassa、Peter A. Jacobi
DOI:10.1021/ol800985m
日期:2008.7.3
Alkyne acids 11 were prepared in an enantioselective fashion from allylic ester derivatives 18 or 20 by Ireland-Claisen rearrangement, followed by Si-assisted elimination of HBr. The title compounds are attractive ring D synthons for an ongoing synthesis of cobyricacid.
炔酸 11 是由烯丙基酯衍生物 18 或 20 通过爱尔兰-克莱森重排以对映选择性方式制备的,然后是 Si 辅助消除 HBr。标题化合物是有吸引力的环 D 合成子,用于正在进行的钴酸合成。