Stereoselective synthesis of both enantiomers of ketoconazole from (R)- and (S)-epichlorohydrin
作者:Pelayo Camps、Xavier Farrés、Ma Luisa García、Joan Ginesta、Jaume Pascual、David Mauleón、Germano Carganico
DOI:10.1016/0957-4166(95)00161-h
日期:1995.6
available (R)- or (S)-epichlorohydrin has been developed. The key-step of these syntheses involves the selective substitution of the methylene chlorine atom by benzoate on a mixture of and or of their enantiomers, followed by crystallization of the corresponding cis-benzoates, (2S,4R)-18 or (2S,4S)-18, from which (+)- or (−)-1 were obtained as described for (±)-1. The ee's of (+)- and (−)-ketoconazole
已经开发了可商购的(R)-或(S)-表氯醇的酮康唑(1)的两种对映异构体的立体选择性合成。这些合成的关键步骤涉及在对映异构体和或它们的对映体混合物上用苯甲酸酯选择性取代亚甲基氯原子,然后使相应的顺式-苯甲酸酯,(2S,4R)-18或(2S,4S )结晶)-18 ,从该(+) -或( - ) - 1分别为(±所述获得) - 1。在CSP Chiralcel OD-H上通过HPLC测定(+)-和(-)-酮康唑的ee。