Disclosed is a drug complex of a drug having a hydroxyl group, which is capable of controlling the rate of the release of the drug therefrom in blood, the drug complex being represented by the following formula (1):
A—B—C (1)
wherein A represents at least one carrier selected from the group consisting of saccharides each having a carboxyl group, polyethylene glycols each having a carboxyl group, aliphatic carboxylic acids each having a carboxyl group, and derivatives thereof each having a carboxyl group; B represents at least one spacer comprised of a compound having a amino group and a carboxyl group; C represents at least one drug having a hydroxyl group, wherein the carrier A is bonded to the spacer B through an amide bond formed between the carboxyl group of the carrier A and the amino group of the spacer B; and the spacer B is bonded to the drug C through an ester bond formed between the carboxyl group of the spacer B and the hydroxyl group of the drug C.
本发明涉及一种药物复合物,该复合物具有羟基的药物,能够控制该药物在血液中的释放速率,该药物复合物由以下公式(1)表示:A-B-C (1),其中A表示从具有羧基的
糖类、具有羧基的聚
乙二醇、具有羧基的脂肪族
羧酸及其衍
生物中选择的至少一种载体;B表示由具有
氨基和羧基的化合物组成的至少一种间隔物;C表示具有羟基的至少一种药物,其中载体A通过在载体A的羧基和间隔物B的
氨基之间形成的酰胺键连接到间隔物B上;间隔物B通过在间隔物B的羧基和药物C的羟基之间形成的酯键连接到药物C上。