Asymmetric reduction of 3-hydroxymethylbutenolide derivatives by bakers' yeast: A new approach to the synthesis of factor-I
摘要:
Bakers' yeast reduction of 3-benzyloxymethylbutenolide gave (S)-3-benzyloxymethylbutanolide, and its transformation to Factor-I, the autoregulator of Streptomyces viridocchromogenes, was examined.
Discovery of carmegliptin: A potent and long-acting dipeptidyl peptidase IV inhibitor for the treatment of type 2 diabetes
作者:Patrizio Mattei、Markus Boehringer、Patrick Di Giorgio、Holger Fischer、Michael Hennig、Joerg Huwyler、Buelent Koçer、Bernd Kuhn、Bernd M. Loeffler、Alexander MacDonald、Robert Narquizian、Etienne Rauber、Elena Sebokova、Urs Sprecher
DOI:10.1016/j.bmcl.2009.12.024
日期:2010.2
synthesis, and SAR are described for a class of DPP-IV inhibitors based on aminobenzo[a]quinolizines with non-aromatic substituents in the S1 specificity pocket. One representative thereof, carmegliptin (8p), was chosen for clinical development. Its X-ray structure in complex with the enzyme and early efficacy data in animal models of type 2 diabetes are also presented.
针对一类基于S1特异性口袋中具有非芳族取代基的氨基苯并[ a ]喹唑啉的DPP-IV抑制剂的设计,合成和SAR进行了描述。选择其代表卡格列汀(8p)进行临床开发。还介绍了其与酶复合的X射线结构以及2型糖尿病动物模型中的早期功效数据。
Synthesis and absolute configuration of A-factor, the inducer of streptomycin biosynthesis in inactive mutants of
作者:Kenji Mori
DOI:10.1016/s0040-4039(01)81924-9
日期:1981.1
The absolute configuration at C-3 of A-factor, 2-(6-methylheptanoyl)-3-hydroxymethyl-4-butanolide 1a, was determined to be S by synthesizing(3S)-(+)-A-factor.