Organic compounds -- part of the class 532-570 series – Organic compounds – Silicon containing
Reexamination Certificate
2005-12-19
2009-06-23
Price, Elvis O (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Silicon containing
C556S436000, C556S473000, C556S465000, C556S413000, C556S443000, C556S482000, C556S489000, C562S126000, C568S660000
Reexamination Certificate
active
07550619
ABSTRACT:
Intermediates useful in the preparation of the antiviral agent entecavir are disclosed. A resin adsorption process for the isolation and purification of entecavir is also disclosed. Various processes useful in the preparation of entecavir are also disclosed.
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Chen Chung-Pin H.
Krishnamurty Dhileepkumar
Liang Jing
Pendri Yadagiri R.
Polniaszek Richard P.
Bristol--Myers Squibb Company
Chapman Jennifer Chin
Epperson James
Nwaonicha Chukwuma O
Price Elvis O
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