Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...
Reexamination Certificate
2007-07-03
2007-07-03
Saeed, Kamal A. (Department: 1626)
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Having -c-, wherein x is chalcogen, bonded directly to...
C548S255000
Reexamination Certificate
active
10502392
ABSTRACT:
Disclosed is a process for efficiently producing a compound represented by formula (I):wherein R1represents aryl, amino, alkyl, or alkoxy; R2represents a protective group of the carboxylic acid; and R3represents an alkali metal, a hydrogen atom, alkyl, aryl, alkylsulfonyl, arylsulfonyl, or trialkylsilyl. This process is characterized by reacting a compound of formula (II) with a compound of formula (III) in the presence of a transition metal compound.
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Imura Koreaki
Okada Yumiko
Tsujiyama Shinichiro
Yasuda Shohei
Chung Susannah L.
Heller Ehrman LLP
Meiji Seika Kaisha Ltd.
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