Chemistry: molecular biology and microbiology – Micro-organism – tissue cell culture or enzyme using process... – Preparing heterocyclic carbon compound having only o – n – s,...
Reexamination Certificate
2008-01-08
2008-01-08
Tsang, Cscilia J. (Department: 1654)
Chemistry: molecular biology and microbiology
Micro-organism, tissue cell culture or enzyme using process...
Preparing heterocyclic carbon compound having only o, n, s,...
Reexamination Certificate
active
07316917
ABSTRACT:
The invention relates to an enzymatic process for the production of an intermediate, bicyclic-heteroaryl-2-carboxylic acid 7, of the formulawherein X and Y are defined in the specification and which are useful in the preparation of beta-lactamase inhibitors, by selective enzymatic hydrolysis of a mixture of positional hydrolyzable esters of the formulaewhere X, Y, and R1are defined in the specification.
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Matur Ramesh Venkat
Ruppen Mark Edward
Heard Thomas S.
Moran, Agent Daniel B.
Tsang Cscilia J.
Wyeth Holdings Corporation
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