STREPTOGRAMINS AND METHOD FOR PREPARING SAME BY MUTASYNTHESIS
申请人:Aventis Pharma, S.A.
公开号:US20020142947A1
公开(公告)日:2002-10-03
Novel group B streptogramine-like compounds of general formula (I), and a method for preparing streptogramines by muta-synthesis using a mutated micro-organism to influence the biosynthesis of at least one of the precursors of group B streptogramines, are disclosed. Novel nucleotide sequences involved in the biosynthesis of said precursors, and their uses, are also disclosed.
Process for production of phenyllactic acid derivative
申请人:NITTO CHEMICAL INDUSTRY CO., LTD.
公开号:EP0696566A1
公开(公告)日:1996-02-14
A process for producing a phenyllactic acid derivative comprises hydrogenating a phenylpyruvic acid derivative in the presence of a catalyst containing at least one element selected from the Group VIII elements of the periodic table. The process provides a phenyllactic acid derivative useful as an intermediate in the production of pharmaceuticals and agricultural chemicals. The process uses as a starting material a phenylpyruvic acid derivative which is easily synthesized. The process is simpler in operation and provides a higher yield than conventional processes.