Process for preparation optically active propoxyaniline derivatives
申请人:——
公开号:US20040077060A1
公开(公告)日:2004-04-22
Treatment of a lactic acid ester derivative with an enzyme or the like, which has asymmetric ester-hydrolyzing ability, can specifically hydrolyze the ester moiety of an isomer existing as the pair to the racemic derivative. Use of the compound obtained by this hydrolysis makes it possible to produce an optically active propoxyaniline derivative by a shorter process than the conventional art.
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Propoxybenzene derivatives and process for preparing the same
申请人:DAIICHI PHARMACEUTICAL CO., LTD.
公开号:EP0322815A2
公开(公告)日:1989-07-05
Propoxybenzene derivatives represented by the following formula
wherein Ra represents a nitro group, an amino group which may have a protecting group or an -NHCH=C(COO-C₁₋₆-Alkyl)₂ group, Rb represents a hydrogen atom, a protecting group for the hydroxyl group or a substituted sulfonyl group and Xa and Xb, which may be the same or different, each represents a halogen atom, and processes for preparation thereof are disclosed. These derivatives are useful in preparing antibacterial agents.