FD-891, a structurally unique 16-membered macrolide having anticancer activity, was synthesized according to a strategy employing asymmetric allylation, Prins cyclization, cross-metathesis reaction, Yamaguchi lactonization, and Julia-Kocienski olefination.
The enantioselective synthesis of FD-891 has been achieved with a longest linear sequence of 21 steps. The synthetic strategy involves the use of aldol additions of a chlorotitanium enolate of N-acylthiazolidinethiones as the key reaction to establish 6 of the 10 stereogenic centers. A key cross-metathesis and a late-stage Julia olefination serve to assemble three key subunits.
The enantioselective synthesis of FD-891 has been achieved with a longest linear sequence of 21 steps. The synthetic strategy involves the use of aldol additions of a chlorotitanium enolate of N-acylthiazolidinethiones as the key reaction to establish 6 of the 10 stereogenic centers. A key cross-metathesis and a late-stage Julia olefination serve to assemble three key subunits.
Stereoselective Total Synthesis of FD-891
作者:J. S. Yadav、Sukant Kishore Das、G. Sabitha
DOI:10.1021/jo302205t
日期:2012.12.21
FD-891, a structurally unique 16-membered macrolide having anticancer activity, was synthesized according to a strategy employing asymmetric allylation, Prins cyclization, cross-metathesis reaction, Yamaguchi lactonization, and Julia-Kocienski olefination.