Compounds of the formula:
wherein R³ is hydrogen, alkyl or hydroxymethyl, and R¹ and R² are hydrogen, alkyl or an electron withdrawing organic group containing at least two carbon atoms, at least one of R¹ and R² being an electron withdrawing group, and with the proviso that: when R³ is hydroxymethyl, R¹ and R² are electron withdrawing organic groups; are useful in the treatment of cancers, particularly cis-platin resistant ovarian cancer. The new compounds are obtainable by reacting formaldehyde with an intermediate of formula:
wherein R3a and R3b are hydrogen, alkyl or hydroxymethyl, but not both hydroxymethyl, and
R¹ and R² are hydrogen, alkyl or an electron withdrawing organic group containing at least two carbon atoms, and at least one of R¹ and R² is an electron-withdrawing organic group and where necessary, converting any N-hydroxy-methoxymethyl substituents to N-hydroxymethyl by treatment with an aqueous medium.
该公式化合物如下:其中R³为氢、烷基或羟甲基,R¹和R²为氢、烷基或含有至少两个碳原子的电子吸引有机基团,R¹和R²中至少有一个为电子吸引基团,且条件是:当R³为羟甲基时,R¹和R²为电子吸引有机基团;这些化合物在治疗癌症中特别是
顺铂耐药性卵巢癌方面具有用途。这些新化合物可通过将
甲醛与以下中间体反应而获得:其中R3a和R3b为氢、烷基或羟甲基,但不同时为羟甲基,R¹和R²为氢、烷基或含有至少两个碳原子的电子吸引有机基团,R¹和R²中至少有一个为电子吸引有机基团,必要时,通过用
水性介质处理将任何N-羟甲氧甲基取代基转化为N-羟甲基。