The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 13, 1996
Filed:
May. 03, 1994
Applicant:
Inventors:
Assignee:
Glaxo Wellcome Inc., Research Triangle Park, NC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
546116 ;
Abstract
A process of providing novel compounds of Formula (I) below, which are useful as intermediates in the preparation of camptothecin and camptothecin-like compounds, ##STR1## wherein: R.sup.1 represents alkyl, particularly methyl, R.sup.2 represents H or alkyl, particularly methyl, R3 represents H or alkyl, particularly H; Q represents triflate or halo particularly bromo and iodo more particularly iodo and Y represents H, chloro or OR.sup.4, wherein R.sup.4 represents alkyl or triflate, or particularly H.
Fang, Francis. (1996). Intermediates in pharmaceutical camptothecin preparation (U.S. Patent No. 5491237). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5491237
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile