An Efficient Large-Scale Synthesis of EDP-420, a First-in-Class Bridged Bicyclic Macrolide (BBM) Antibiotic Drug Candidate
作者:Guoyou Xu、Datong Tang、Yonghua Gai、Guoqiang Wang、Heejin Kim、Zhigang Chen、Ly T. Phan、Yat Sun Or、Zhe Wang
DOI:10.1021/op900228u
日期:2010.5.21
Starting from inexpensive and commercially available erythromycin A 9-oxime, the current chemical process involves a series of transformations: triacetylation, Pd-catalyzed O,O-bis-allylation (bridge formation), acid-catalyzed sugar cleavage, oxime reduction, acetylation, Os-catalyzed bridge olefin oxidative cleavage, Corey−Kim oxidation, bridge oxime formation, deprotection, and final purification. Multikilogram
描述了新型桥联双环大环内酯候选药物EDP-420(1)的多步骤,实用且经济高效的合成方法。从廉价且可商购的红霉素A 9-肟开始,当前的化学过程涉及一系列转化:三乙酰化,Pd催化的O,O-双-烯丙基化(桥形成),酸催化的糖裂解,肟还原,乙酰化, Os催化桥烯烃氧化裂解,Corey-Kim氧化,桥肟形成,脱保护和最终纯化。多千克量已合成。