New phosphate derivatives represented by the formula:
wherein
R1, R2, and R3 are each hydroxy, alkoxy, alkanoylamino or protected hydroxy;
A is lower alkylene;
R4 is alkylammonio, cyclic ammonio or cyclic amino; and R5 is oxido anion or hydroxy;
and pharmaceutically acceptable salt thereof, which exhibit antitumor activity
式中 R1、R2 和 R3 分别为羟基、烷氧基、烷酰
氨基或受保护的羟基;A 为低级亚烷基;R4 为烷基
氨、环
氨或环
氨基;R5 为氧代阴离子或羟基的新
磷酸酯衍
生物及其药学上可接受的盐,具有抗肿瘤活性