专利检索 ap:("Marco Villa" OR "Paolo Cavalleri") AND inv:"Marco Villa" 第 7 页

61.

发明授权
Process for the stereochemical inversion of (2S,3S)-2-amino-3-phenyl-1,3-propanediols into their (2R,3R) enantiomers 失效
标题翻译：（2S，3S）-2-氨基-3-苯基-1,3-丙二醇在其（2R，3R）增效剂中的立体化学反应的方法

公开(公告)号：US5202484A

公开(公告)日：1993-04-13

申请号：US599881

申请日：1990-10-19

申请人： Marco Villa , Claudio Giordano , Silvia Cavicchioli , Silvio Levi

发明人： Marco Villa , Claudio Giordano , Silvia Cavicchioli , Silvio Levi

IPC分类号： C07C315/04 , C07B55/00 , C07C55/00 , C07C213/08 , C07C213/10 , C07C215/30 , C07C215/34 , C07C215/36 , C07C315/06 , C07C317/32 , C07C319/20 , C07C319/26 , C07C323/32 , C07C323/39 , C07C323/41 , C07C323/42 , C07C323/43 , C07D263/06

CPC分类号： C07C323/39 , C07C317/32 , C07C323/32 , C07D263/06

摘要： A four step process for transforming (2S,3S)-2-amino-3-phenyl-1,3-propanediols into their (2R,3R)-enantiomers is described. The final compounds are useful intermediates for the synthesis of antibiotics like Chloramphenicol, Thiamphenicol and Florfenicol. The starting products generally are discard products in the synthesis of said antibiotics.

62.

发明授权
Trioxy bicyclic compounds useful for preparing optically active carboxylic acids 失效
标题翻译：用于制备光学活性羧酸的三元双环化合物

公开(公告)号：US5084569A

公开(公告)日：1992-01-28

申请号：US493752

申请日：1990-03-15

申请人： Marco Villa , Claudio Giordano , Graziano Castaldi , Silvia Cavicchioli

发明人： Marco Villa , Claudio Giordano , Graziano Castaldi , Silvia Cavicchioli

IPC分类号： B01J31/02 , C07B31/00 , C07B41/08 , C07B53/00 , C07B61/00 , C07C51/00 , C07C57/30 , C07C59/64 , C07C67/00 , C07D317/32 , C07D493/08

CPC分类号： C07D493/08 , C07C51/00 , C07D317/32

摘要： A stereoconvergent process is described for preparing optically active alpha-arylalkanoic acids using as starting substance a diastereoisomeric mixture of ketals of formula ##STR1## in which the substitutents have the meanings given in the description. The described process leads to the formation of a single enantiomer.

63.

发明授权
Process for preparing naproxen 失效
标题翻译：制备NAPROXEN的方法

公开(公告)号：US5053533A

公开(公告)日：1991-10-01

申请号：US223377

申请日：1988-07-25

申请人： Claudio Giordano , Marco Villa

发明人： Claudio Giordano , Marco Villa

IPC分类号： C07D317/30 , B01J27/125 , C07B61/00 , C07C45/00 , C07C45/46 , C07C49/84 , C07C51/00 , C07C67/00

CPC分类号： C07C45/46 , C07C49/84 , C07C51/00

摘要： A process for preparing alpha-arylalkanoic acids is described, and more specifically a process which is particularly convenient from the industrial aspect for the synthesis of S(+)2-(6-methoxy-2-naphthyl)-1-propionic acid.