Application of Enantioselective Sulfur Ylide Epoxidation to a Short Asymmetric Synthesis of Bedaquiline, a Potent Anti-Tuberculosis Drug
作者:Maryam Bashir、Muhammad Arshad、Robina Begum、Varinder K. Aggarwal
DOI:10.1021/acs.orglett.3c01286
日期:2023.6.16
A highly selective asymmetric synthesis of a potent anti-TB drug (−)-bedaquiline is accomplished using sulfur ylide asymmetric epoxidation, employing (+)-isothiocineole as an inexpensive and readily available chiral sulfide. Excellent enantioselectivity (er 96:4) and diastereoselectivity (dr 90:10) were obtained for the construction of the key diaryl epoxide, which was subsequently subjected to a highly
使用硫叶立德不对称环氧化,使用(+)-异硫桉树脑作为廉价且容易获得的手性硫化物,高度选择性地不对称合成有效的抗结核药物(−)-bedaquiline。关键的二芳基环氧化物的构建获得了优异的对映选择性 (er 96:4) 和非对映选择性 (dr 90:10),随后进行了高度区域选择性的开环 (96:4)。从市售醛开始,合成分九步完成,总产率为 8%。