Disclosed are imidazole derivatives represented by formula [I]: ##STR1## wherein R is a hydrogen atom or ##STR2## wherein R.sup.2 is a hydrogen atom or a hydroxy protecting group, R.sup.2 protecting either a single hydroxy or two hydroxies together when R.sup.2 is a hydroxy protecting group, and R.sup.3 is a hydrogen atom or OR.sup.2 ; A is CONH.sub.2 or CN; and R.sup.1 is a hydrogen atom, lower alkyl, hydroxy lower alkyl, or phenyl. Also disclosed are six processes for producing these novel compounds among which a typical process comprises reacting a starting imidazole compound having a halogen at the 5-position thereof with an acetylene derivative to alkynylate the 5-position. Furthermore, the compounds having remarkable antitumor activities and therefore can provide novel antitumor agents.
已披露的
咪唑衍
生物如下所示:其中R是
氢原子或其中R.sup.2是
氢原子或羟基保护基团,R.sup.2在R.sup.2是羟基保护基团时可以保护单个羟基或两个羟基,R.sup.3是
氢原子或OR.sup.2;A是CONH.sub.2或CN;R.sup.1是
氢原子、较低的烷基、羟基较低的烷基或
苯基。还披露了六种制备这些新化合物的方法,其中一种典型的方法包括将在其5-位置具有卤素的起始
咪唑化合物与
乙炔衍
生物反应以炔基化5-位置。此外,这些化合物具有显著的抗肿瘤活性,因此可以提供新的
抗肿瘤药物。