Gualacol esters of alpha- and beta-mercaptopropionyl alanine and of alpha- and beta-mercaptopropionyl glycine having formulae:
wherein R is hydrogen or methyl and Y is hydrogen or an acyl radical (acetyl, benzoyl or methoxycarbonyl).
Pharmaceutical compositions containing these guaiacol esters have mucolytic activity.
The process for manufacturing these guaiacol esters comprises preparing in a known per se manner a sulhydryl group-containing intermediate wherein the sulfhydryl is protected by a trityl or p-methoxybenzyl group, and removing the protective group under acid conditions.
α-和β-巯基丙酰基丙
氨酸以及α-和β-巯基丙酰基甘
氨酸的
愈创木酚酯,其
化学式为
其中 R 是氢或甲基,Y 是氢或酰基(乙酰基、苯甲酰基或甲氧基羰基)。
含有这些
愈创木酚酯的药物组合物具有粘液溶解活性。
制造这些
愈创木酚酯的工艺包括以已知的本身方式制备含巯基的中间体,其中的巯基被三苯甲基或对甲氧基苄基保护,然后在酸性条件下去除保护基。