Stereoselective Synthesis of the C<sub>5</sub>–C<sub>18</sub> Fragment of Halichomycin
作者:Qingjiang Li、Shiyong Mao、Yuxin Cui、Yanxing Jia
DOI:10.1021/jo202602n
日期:2012.4.20
An efficient and convergent synthesis of the C-5-C-18 fragment of halichomycin is reported. Butanolide fragment 6 was readily prepared stereoselectively from (R)-Roche ester through catalyst control; dienylic bromide domain 7 was synthesized from (S)-serine by substrate control. C-5-C-18 fragment 2 was rapidly assembled through a stereoselective alkylation of the butanolide with the dienylic bromide, followed by functional group transformations.