Phospholipid derivatives of the formula:
wherein R¹ is a higher alkyl, acylmethyl or alkylcarbamoyl group which may be substituted by cycloalkyl; R² is a lower alkyl which may be substituted by carboxy, formyl or lower acyl, a carbamcyl or thiocarbamoyl group which is substituted by lower alkyl, or an acetoacetyl group; R³, R⁴ and R⁵ are independently hydrogen or lower alkyl, or
represents a cyclic ammonio group; and n represents an integer of 8 to 14, and salts thereof have antitumor activity and platelet activating factor inhibitory activity and are useful as antitumor agents.
式中的
磷脂衍
生物:
其中 R¹ 是可被
环烷基取代的高烷基、酰
甲基或烷基
氨基甲酰基;R² 是可被羧基、甲酰基或低级酰基、被低级烷基取代的
氨基甲酰基或
硫代
氨基甲酰基或乙酰
乙酰基取代的低级烷基;R³、R⁴ 和 R⁵ 独立地为
氢或低级烷基,或代表环
氨基团;n 代表 8 至 14 的整数。
代表环状
铵基;以及 n 代表 8 至 14 的整数,其盐类具有抗肿瘤活性和血小板活化因子抑制活性,可用作抗肿瘤剂。