Novel compounds of the formula ##STR1## wherein each R.sup.1 is the same and is a straight or branched chain alkynyl group containing from 3 to 9 carbon atoms, inclusive, which are useful intermediates in the preparation of anti-ulcer agents, are prepared by reacting cystamine (VI) with an N-cyano-N'-alkynyl-S-methylisothiourea of the formula ##STR2## in which R.sup.1 is as defined above.
该专利描述了一种新化合物,
化学式为##STR1## 其中每个R.sup.1相同,为含有3至9个碳原子的直链或支链炔基基团,包括在内。这些化合物是制备抗溃疡药物的有用中间体,通过将半胱
氨酸(VI)与具有以下
化学式的N-
氰基-N'-炔基-S-甲基异
硫脲反应制备而成。##STR2## 其中R.sup.1如上所定义。