Chiral auxiliary-mediated enantioenrichment of (±)-ibuprofen, under steglich conditions, with secondary alcohols derived from (R)-carvone
作者:Marcela Amongero、Damian Visnovezky、Teodoro S. Kaufman
DOI:10.1590/s0103-50532010000600011
日期:——
of chiral secondary alcohols derived from (R)-carvone, and the stereochemical outcome of their reaction with (±)-ibuprofen, is reported. The racemic drug was transformed into the corresponding diastereomeric esters mediated by DCC/DMAP, affording up to 5.7:1 diastereomeric ratios of the esters derived from either (S)- or (R)-ibuprofen, depending on the type of chiral auxiliary employed.
报道了衍生自(R)-香芹酮的一系列手性仲醇的合成,以及它们与(±)-布洛芬反应的立体化学结果。将外消旋药物转化为由DCC / DMAP介导的相应的非对映体酯,根据所用手性助剂的类型,提供高达5.7:1的衍生自(S)-或(R)-布洛芬的酯的非对映体比例。