The present invention is directed to 2-hydroxy-4-alkylidenecyclohexanealkanoic acids having a mercaptoalkanoic acid substituent at the 3-position. Esters and amides corresponding to the acids referred to above are also encompassed by the present invention. These compounds are useful in the treatment of bronchial asthma and they are obtained by the reaction of an appropriate 2,3-epoxy-4-alkylidenecyclohexanealkanoate with a mercapto alkanoic acid ester in the presence of a tertiary amine. The indicated process gives the esters of the present invention which can be hydrolyzed to the corresponding free acids by standard procedures. The compounds described can be subjected to other known reactions to give the other compounds of the present invention.
本发明涉及在3位具有巯基烷酸取代基的2-羟基-4-烷基烯基
环己烷烷酸。本发明还包括与上述酸对应的酯和酰胺。这些化合物在支气管哮喘的治疗中很有用,它们是通过在三级胺存在下将适当的2,3-环氧基-4-烷基烯基
环己烷酸酯与巯基烷酸酯反应而获得的。所述过程给出了本发明的酯,可以通过标准程序
水解为相应的自由酸。所述化合物可以经受其他已知反应以给出本发明的其他化合物。