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:
May. 17, 2005
Filed:
Mar. 31, 2003
Applicants:
Santosh Kumar Srivastava, Uttar Pradesh, IN;
Merajuddin Khan, Uttar Pradesh, IN;
Suman Preet Singh Khanuja, Uttar Pradesh, IN;
Inventors:
Santosh Kumar Srivastava, Uttar Pradesh, IN;
Merajuddin Khan, Uttar Pradesh, IN;
Suman Preet Singh Khanuja, Uttar Pradesh, IN;
Assignee:
Council of Scientific and Industrial Research, New Delhi, IN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K035/78 ; A61K031/44 ;
U.S. Cl.
CPC ...
Abstract
The present invention relates to an improved and economical process for the isolation of anticancer agent Camptothecin from the twigs and stem ofusing hot extraction 20(S) Camptothecin is an alkaloid, which contains a pentacyclic ring system that includes a pyrrolo [3,4-b] quinoline moiety (ring A, B and C), the pyridone ring D and a chiral center at C-20 in ring E.