C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/111, 260/335
C07D 205/09 (2006.01) C07D 499/00 (2006.01) C07D 499/88 (2006.01) C07F 7/10 (2006.01) C07F 7/18 (2006.01)
Patent
CA 1299172
ABSTRACT A process for producing a compound having the formula Image I wherein Pr is hydrogen or a hydroxy protecting group and Pr1 is a carboxy protecting group, comprising reacting a compound of the formula Image 5 wherein Pr is as previously defined, with a compound having the formula Pr1-OH, wherein Pr1 is as previously defined and either mineral acid or a silver salt of an organic base, and reacting the product so produced with a compound having the formula: Image wherein L is a leaving group. Three reaction schemes are disclosed as well as novel intermediate compounds.
542505
Gala Dinesh
Hou Donald C.
Steinman Martin
Wong Yee-Shing
Gala Dinesh
Hou Donald C.
Schering Corporation
Steinman Martin
Swabey Ogilvy Renault
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