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:
Nov. 17, 1998
Filed:
Jul. 30, 1996
Kenji Tsujihara, Urawa, JP;
Takayuki Kawaguchi, Toshima-ku, JP;
Satoshi Okuno, Misato, JP;
Toshiro Yano, Urawa, JP;
Tanabe Seiyaku Co., Ltd., Osaka, JP;
Abstract
A camptothecin derivative comprising a compound of the formula �I!: ##STR1## wherein R.sup.1 is a substituted or unsubstituted lower alkyl group, X.sup.1 is a group of the formula: --NHR.sup.2 (R.sup.2 is a hydrogen atom or a lower alkyl group) or a group of --OH, and Alk is a straight chain or branched chain alkylene group having optionally an oxygen atom in the chain thereof, bound to a polysaccharide having carboxyl groups via an amino acid or a peptide, or a pharmaceutically acceptable salt thereof. Said camptothecin derivatives show enhanced antitumor activities but few side effects unlike conventional anticancer agents, and hence, these compounds are extremely useful as a medicament.