An Enantioselective Synthesis of the Key Intermediate for Triazole Antifungal Agents; Application to the Catalytic Asymmetric Synthesis of Efinaconazole (Jublia)
作者:Keiji Tamura、Naoya Kumagai、Masakatsu Shibasaki
DOI:10.1021/jo500369y
日期:2014.4.4
A new synthetic route, the shortest reported to date, to access a key intermediate for the synthesis of various triazole antifungal agents was developed. The elusive tetrasubstituted stereogenic center that is essential in advanced triazole antifungal agents was constructed via the catalytic asymmetric cyanosilylation of a ketone. The subsequent transformations were performed in two one-pot operations
开发了一种新的合成路线,该路线是迄今为止报道的最短路线,可通往合成各种三唑抗真菌剂的关键中间体。通过高级酮的催化不对称氰基硅烷化反应构建了在高级三唑抗真菌剂中必不可少的难以捉摸的四取代立体异构中心。随后的转化以两个一锅操作进行,从而提高了中间体的整体合成效率。这种简化的合成方法已成功地应用于依非那康唑(Jublia)和拉伏康唑的有效对映选择性合成。