CONJUGATES COMPRISING HYDROXYALKYL STARCH AND A CYTOTOXIC AGENT AND PROCESS FOR THEIR PREPARATION
申请人:Fresenius Kabi Deutschland GmbH
公开号:US20150297738A1
公开(公告)日:2015-10-22
The present invention relates to a hydroxyalkyl starch conjugate and a method for preparing the same, said hydroxyalkyl starch conjugate comprising a hydroxyalkyl starch derivative and a cytotoxic agent, the cytotoxic agent comprising at least one secondary hydroxyl group, wherein the hydroxyalkyl starch is linked via said secondary hydroxyl group to the cytotoxic agent. The conjugate according to the present invention has a structure according to the following formula HAS′(-L-M)
n
wherein M is a residue of the cytotoxic agent, L is a linking moiety, HAS′ is the residue of the hydroxyalkyl starch derivative, and n is greater than or equal to 1, and wherein the hydroxyalkyl starch derivative has a mean molecular weight (MW) above the renal threshold.
本发明涉及一种羟烷基淀粉共轭物及其制备方法,所述羟烷基淀粉共轭物包括羟烷基淀粉衍生物和细胞毒性药剂,所述细胞毒性药剂包括至少一个次级羟基,其中羟烷基淀粉通过所述次级羟基与细胞毒性药剂连接。根据本发明的共轭物具有以下公式HAS'(-L-M)n的结构,其中M是细胞毒性药剂的残基,L是连接基团,HAS'是羟烷基淀粉衍生物的残基,n大于或等于1,且羟烷基淀粉衍生物的平均分子量(MW)高于肾脏阈值。