Direct Entry to 4,10-Didesmethyl (9<i>S</i>)-Dihydroerythronolide A via Catalytic Allene Osmylation
作者:Libing Yu、Huan Wang、Novruz G. Akhmedov、Christopher Sowa、Kai Liu、Hiyun Kim、Lawrence Williams
DOI:10.1021/acs.orglett.6b01151
日期:2016.6.17
to 4,10-didesmethyl (9S)-dihydroerythronolide A (1) from known cyclic bis[allene] 13 is reported. Key structural and mechanistic aspects of the synthesis are discussed along with catalytic allene osmylation. An improved route to 13 is also described.
脱甲基赤藓醇内酯已成为大环内酯的靶标,可证明对耐药菌有效。据报道,从已知的环状双[丙二烯] 13到4,10-二甲基(9 S)-二氢赤藓醇内酯A(1)的五步序列。讨论了合成的关键结构和机理,以及催化的烯丙糖基化。还描述了一种改进的到达13的途径。