A quinazoline of the formula:- ##STR1## wherein R.sup.1 is alkyl, cycloalkyl, alkenyl, alkynyl, alkoxy, alkylthio, aryl, aryloxy, arylalkyl, halogeno, hydroxy, mercapto, pyridylthio, pyrimidinylthio, or substituted alkyl or alkoxy; wherein R.sup.2 is hydrogen, alkyl, alkenyl, alkynyl, substituted alkyl or alkanoyl; wherein Ar is phenylene, naphthylene or heterocyclene which is unsubstituted or bears one or more substituents and wherein R.sup.3 is such that R.sup.3 --NH.sub.2 is an amino acid; or a pharmaceutically-acceptable salt or ester thereof. The compounds possess anti-tumor activity.
一种化合物的
喹唑啉,其
化学式为:- ## STR1 ## 其中R.sup.1是烷基,环烷基,烯基,炔基,烷氧基,烷
硫基,芳基,芳基氧基,芳基烷基,卤素,羟基,巯基,
吡啶硫基,
嘧啶硫基或取代烷基或烷氧基;其中R.sup.2是氢,烷基,烯基,炔基,取代烷基或酰基;其中Ar是苯基,
萘基或杂环烷基,未取代或带有一个或多个取代基,其中R.sup.3是使R.sup.3--NH.sub.2为
氨基酸的基团;或其药学上可接受的盐或酯。这些化合物具有抗肿瘤活性。