Synthesis of (−) cephalosporolide E and (+) cephalosporolide F utilizing the vinylogous Mukaiyama type reaction with an α-chloro sulfide
作者:Sadagopan Raghavan、Javed Sardar Patel、K. V. S. Ramakrishna
DOI:10.1039/c6ra13861f
日期:——
synthesis of cephalosporolide E and F is described utilizing diastereoselective reduction of a propargylic ketone using a Noyori catalyst to create the C6 carbinol stereogenic center. A vinylogous silylketene acetal addition to an α-chloro sulfide is exploited for stereoselective carbon–carbon bond formation and introduction of the butenolide moiety. Oxidative radical cyclization is utilized for the creation