申请人:Tanabe Seiyaku Co., Ltd.
公开号:US05837673A1
公开(公告)日:1998-11-17
A camptothecin derivative comprising a compound of the formula \x9bI!: ##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.
一种紫杉醇衍生物,包括具有以下结构的化合物:其中R.sup.1是取代或未取代的较低烷基基团,X.sup.1是以下结构的一个基团:--NHR.sup.2(其中R.sup.2是氢原子或较低烷基基团)或--OH的基团,Alk是一种直链或支链烷基烃基团,该基团在链中可能有一个氧原子,通过氨基酸或肽键结合到具有羧基的多糖上,或其药学上可接受的盐。所述紫杉醇衍生物显示出增强的抗肿瘤活性,但与传统的抗癌药物相比副作用较少,因此,这些化合物作为药物非常有用。