A general synthesis of dioxolenone prodrug moieties
摘要:
A general method for the synthesis of dioxolenone prodrug moieties from appropriately substituted beta-ketoesters is described. This novel and versatile sequence allows for the synthesis of alkyl- or aryl-substituted dioxolenone alcohols 8 or bromides 9. Coupling of the bromides 9 to prepare bis-dioxolenone phosphonate prodrug esters is also presented. (C) 2002 Elsevier Science Ltd. All rights reserved.
Reaction of alcohols with ethyl and tert-butyl acetoacetate catalyzed by a combination of commercially available enzymes is shown to be a convenient method for the preparation of a range of acetoaceticacidderivatives. Systematic studies proved that the combination of two or more enzymes enhances the yield of the reaction. Application of the selected enzyme mixture for enzymatic transesterification
A general synthesis of dioxolenone prodrug moieties
作者:Chong-Qing Sun、Peter T.W. Cheng、Jay Stevenson、Tamara Dejneka、Baerbel Brown、Tammy C. Wang、Jeffrey A. Robl、Michael A. Poss
DOI:10.1016/s0040-4039(01)02386-3
日期:2002.2
A general method for the synthesis of dioxolenone prodrug moieties from appropriately substituted beta-ketoesters is described. This novel and versatile sequence allows for the synthesis of alkyl- or aryl-substituted dioxolenone alcohols 8 or bromides 9. Coupling of the bromides 9 to prepare bis-dioxolenone phosphonate prodrug esters is also presented. (C) 2002 Elsevier Science Ltd. All rights reserved.