7-Deazapurine derivatives of the formula:
wherein R' is phenyl which has, at the ortho position and/or para position as substituents, at least one group represented by the formula -O-R3, -S-R4 or -N R5 (wherein R3, R4, R5 R6 and R6 are the same or different and each is hydrogen or an alkyl or phenyl group which may be substituted, whereby R5 and R6, together with the adjacent nitrogen atom, may form a cyclic amino group which may be substituted, and R3, R4, R5 and R6 each may represent a protective group), and may have a group or groups with a molecular weight of up to about 200 as a substituent at any position other than those having the said substituents introduced; R2 is an amino group which may be protected, or its salt, have a potent antitumor activity, and hence the compounds are useful as an antitumor agent.
式中的 7-去氮
嘌呤衍
生物:
其中 R'为苯基,在正位和/或对位上具有至少一个由式 -O-R3、-S-R4 或 -N R5 所代表的基团作为取代基(其中 R3、R4、R5 R6 和 R6 相同或不同,且各自为氢或可被取代的烷基或苯基,其中 R5 和 R6 与相邻的氮原子可形成可被取代的环状
氨基,R3、R4、R5 和 R6 可各自代表保护基)、R3、R4、R5 和 R6 可各自代表一个保护基团),并可在引入上述取代基的位置以外的任何位置上有一个或多个分子量不超过约 200 的基团作为取代基;R2 是可被保护的
氨基或其盐,具有很强的抗肿瘤活性,因此这些化合物可用作抗肿瘤剂。