A convergent synthesis of the unique thiazole-containing polyene bis-lactone pateamine A (1) isolated from the marine sponge Mycale sp is described. The synthesis features the ubiquitous Stille sp2sp2 coupling reaction to elaborate the E,Z-diene macrolide core 23 and the all-E polyenamine side chain in the natural product. It also highlights the scope for enantiopure sulfinimine intermediates in the synthesis of chiral β-amino ester moieties in complex structures.Key words: pateamine A, immunosuppressive agent from marine sponge Mycale sp, total synthesis, novel 19-membered bis-lactone, thiazole metabolite, polyenamine, Stille reaction, sulfinimines, chiral β-amino esters.
这是一段关于从海绵Mycale sp中分离的独特
噻唑含有的聚烯烃双内酯pateamine A (1)的收敛合成描述。合成过程中采用了普遍存在的Stille sp
2sp
2偶联反应来扩展E,Z-二烯大环内酯核心23和
天然产物中的全E多烯胺侧链。它还突出了在合成手性β-
氨基酯基团的复杂结构中使用对映纯亚砜
亚胺中间体的可能性。关键词:pateamine A,来自海绵Mycale sp的
免疫抑制剂,全合成,新型19环双内酯,
噻唑代谢物,聚烯胺,Stille反应,亚砜
亚胺,手性β-
氨基酯。