2-Methyl-5-(2-hydroxystyryl)-1,3,4-thiadiazole of the formula ##STR1## and processes for its preparation by condensing salicylaldehyde with 2,5-dimethyl-1,3,4-thiadiazole or 2-methyl-5-(triphenylphosphine-methylene)-1,3,4-thiadiazole. 2-Methyl-5-(2-hydroxystyryl)-1,3,4-thiadiazole is a valuable intermediate for the preparation of pharmacologically active compounds; for example the alkylamino-hydroxypropyl ethers can, because of their .beta.-sympatholytic action, be used as drugs for the treatment of coronary diseases of the heart, cardiac arrhythmias and hypertonia.
化学式为##STR1##的2-甲基-5-(2-羟基苯亚
乙烯基)-1,3,4-
噻二唑及其制备方法,通过将
水杨醛与2,
5-二甲基-1,3,4-
噻二唑或2-甲基-5-(
三苯基膦亚甲基)-1,3,4-
噻二唑缩合制备。2-甲基-5-(2-羟基苯亚
乙烯基)-1,3,4-
噻二唑是制备药理活性化合物的有价值中间体;例如,由于其β-交感神经抑制作用,烷基
氨基-羟基丙基醚可以用作治疗心脏冠状动脉疾病、心脏心律失常和高血压的药物。