New phospholipid derivatives represented by the formula:
wherein
R1 is alkyl, alkoxy, alkylthio or alkylsulfonyl;
R2 is hydrogen, hydroxy, alkoxy, lower alkanoyloxy or lower alkylcarbamoyloxy;
n is 0 or 1;
R3 is hydroxy or protected hydroxy; and
R4 is lower alkoxy or lower alicyclic-oxy group which is substituted with 2 or more hydroxy or protected hydroxy groups, and may be substituted with lower alkoxy or another alicyclic-oxy group having two or more hydroxy or protected hydroxy groups, in which the alicyclic ring may contain an oxygen atom;
and pharmaceutically acceptable salt thereof, which exhibit antitumor activity.
由以下式子表示的新
磷脂衍
生物
其中
R1是烷基、烷氧基、烷
硫基或烷基磺酰基;
R2 是氢、羟基、烷氧基、低级烷酰氧基或低级烷基
氨基甲酰氧基;
n 为 0 或 1;
R3 是羟基或受保护的羟基;以及
R4 是被 2 个或 2 个以上羟基或受保护羟基取代的低级烷氧基或低级脂环氧基,并可被低级烷氧基或具有 2 个或 2 个以上羟基或受保护羟基的另一个脂环氧基取代,其中脂环可含有一个氧原子;
及其药学上可接受的盐,具有抗肿瘤活性。