6-Chloro-2,3-dihydro-4H-1-benzopyran carboxylic acids: Synthesis, optical resolution and absolute configuration
摘要:
6-Chloro-2,3-dihydro-4H-1-benzopyran-2-carboxylic acid, a rigid analogue of clofibric acid, the active metabolite of the antilipidemic drug clofibrate, has been prepared together with two isomers, 6-chloro-2,3-dihydro-4H-1-benzopyran-3- and 4-carboxylic acids. The three acids have been resolved into their optical antipodes and the absolute configuration established by chemical correlation.