作者:Shengyang Wang、Jiansong Sun、Qingju Zhang、Xin Cao、Yachen Zhao、Gongli Tang、Biao Yu
DOI:10.1002/anie.201800169
日期:2018.3.5
The proposed diastereoisomers (1 a–d) together with their C8′‐epimers (1 e–h) of amipurimycin, a unique antifungal peptidyl nucleoside antibiotic, have been synthesized for the first time. The synthetic approach is efficient and stereodivergent, and features a stereoselective aldol condensation to build the branched C9 sugar amino acid skeleton and a regio‐ and stereocontrolled gold(I)‐catalyzed N‐glycosylation
拟议的非对映异构体(1 a – d)以及其独特的抗真菌肽基肽核苷抗生素Amipurimycin的C8'-顶基(1 e – h)首次合成。合成方法高效且立体发散,并具有立体选择性羟醛缩合以构建分支的C9糖氨基酸骨架,以及区域和立体控制的金(I)催化的N-糖基化作用,以提供嘌呤核苷。NMR数据分析表明,阿米普霉素中先前分配的叔C3'构型应为相反构型。