申请人:American Cyanamid Company
公开号:US04150030A1
公开(公告)日:1979-04-17
This invention relates to the preparation of optically active d-2-aminobutanol by catalytic asymmetric reduction of appropriate dehydro precursors to produce selectively the desired isomer. The same substrates can also be used to prepare the dl-mixture using optically inactive catalysts. The novel substituted-4-ethyl-4-oxazolin-2-one and substituted-4-ethyl-2-oxazolidinone compounds of this invention are useful as intermediates in the production of the antituberculosis drug ethambutol (Myambutol.RTM.).
这项发明涉及通过催化不对称还原适当的脱氢前体制备光学活性的d-2-氨基丁醇,以选择性地产生所需的异构体。相同的底物也可以使用光学不活性催化剂来制备dl-混合物。本发明的新型取代-4-乙基-4-噁唑啉-2-酮和取代-4-乙基-2-噁唑烷酮化合物可用作抗结核药物乙胺丁醇(Myambutol.RTM.)的中间体。