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:
Jul. 24, 2001
Filed:
Jul. 07, 1997
Applicant:
Inventors:
Sang Sup Jew, Seoul, KR;
Hee Soon Lee, Cheongju, KR;
Joon Kyum Kim, Seoul, KR;
Kwang Dae Ok, Suwon, KR;
Kyeong Hoi Cha, Kwangmyeong, KR;
Myoung Goo Kim, Seoul, KR;
Kwang Kyun Lee, Seoul, KR;
Jong Min Kim, Seoul, KR;
Hee Jin Kim, Pusan, KR;
Jeong Mi Hah, Seoul, KR;
Assignee:
Chong Kun Dang Corp., Seoul, KR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K 3/144 ;
U.S. Cl.
CPC ...
A61K 3/144 ;
Abstract
Camptothecin derivatives and pharmaceutically acceptable salts thereof, its manufacturing method and an antineoplastic agent containing it. The camptothecin derivatives are modified in B-ring and E-ring and show improved water solubility and enhanced antineoplastic effect.