Organic compounds -- part of the class 532-570 series – Organic compounds – Amino nitrogen containing
Reexamination Certificate
2005-09-27
2009-10-27
Davis, Brian J (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Amino nitrogen containing
C546S048000, C568S306000
Reexamination Certificate
active
07608740
ABSTRACT:
The present invention discloses a process for efficient production of 2-amino-5-hydroxypropiophenone corresponding to the AB ring part of camptothecin (CPT) skeleton, which is a key intermediate useful for the total synthesis of camptothecin analogs including 7-Ethyl-10-hydroxy camptothecin and novel intermediates thereof.
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Rao Ramakrishna
Rao Alla Venkata Rama
Avra Laboratories Pvt. Ltd
Davis Brian J
Law Offices of Albert Wai-Kit Chan PLLC
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