Compounds of the formulae: ##SPC1## And the salts thereof with pharmaceutically acceptable cations wherein R.sup.1 is 3-trifluoromethyl, chloro, bromo or fluoro; n and m are each two or three; X is oxygen or sulphur; R.sup.2 and R.sup.3, when taken separately, are each hydrogen or alkyl having 1 to 4 carbon atoms; R.sup.2 and R.sup.3, when taken together, are alkylene having 2 to 4 carbon atoms; Y is methylene or a single bond; R.sup.4 and R.sup.5, when taken separately, are each hydrogen, hydroxy or alkoxy having 1 to 4 carbon atoms, and R.sup.4 and R.sup.5, when taken together, are oxo or alkylene dioxy having 2 to 4 carbon atoms, each oxygen atom in R.sup.4 and R.sup.5, when taken separately, and in R.sup.4 and R.sup.5, when taken together, being separated from the nitrogen atom of the heterocyclic ring by two or more carbon atoms, said compounds being cerebral vasodilators.
公式为:##
SPC1## 的化合物及其与药用可接受的阳离子形成的盐,其中 R1 为3-三
氟甲基、
氯、
溴或
氟;n 和 m 均为二或三;X 为氧或
硫;当 R2 和 R3 分别取时,它们均为氢或具有1至4个碳原子的烷基;当 R2 和 R3 合并时,它们为具有2至4个碳原子的亚烷基;Y 为亚甲基或单键;当 R4 和 R5 分别取时,它们均为氢、羟基或具有1至4个碳原子的烷氧基,当 R4 和 R5 合并时,它们为氧代或具有2至4个碳原子的亚烷基二氧基,当 R4 和 R5 分别取时以及当 R4 和 R5 合并时,它们中的每个氧原子都与杂环环上的氮原子相隔两个或更多个碳原子,这些化合物是脑血管扩张剂。