4-Amino-1H-pyrazolo[3,4-d]pyrimidine derivatives of formula I ##STR1## wherein the symbols are as defined in claim 1, and intermediates for their manufacture are described. The compounds of formula I inhibit especially the tyrosine kinase activity of the receptor for epidermal growth factor and can be used, for example, in the case of epidermal hyperproliferation (psoriasis) and as anti-tumor agents.
式I的4-
氨基-1H-
吡唑并[3,4-d]
嘧啶衍
生物##STR1##
其中符号如权利要求1所定义的那样,并描述了其制造的中间体。公式I的化合物特别抑制
表皮生长因子受体的
酪氨酸激酶活性,并可用于例如表皮过度增生(牛皮癣)和作为抗肿瘤剂的情况。