5-Alkoxy-picolinic esters represented by the formula (I): ##STR1## wherein R represents an alkyl group having 1 to 6 carbon atoms and R.sub.1 represents an unsubstituted phenyl group; a phenyl group substituted with one or more of an alkyl group having 1 to 4 carbon atoms or an acetyl group; a phthalidyl group; an alkoxyalkyl group wherein the alkyl moiety and the alkoxy moiety each has 1 to 4 carbon atoms; an alkoxyalkoxyalkyl group wherein the alkyl moiety and the alkoxy moiety each has 1 to 4 carbon atoms; an indanyl group; or an acyloxyalkyl group having the formula ##STR2## wherein R.sub.2 represents a hydrogen atom or a methyl group and R.sub.3 represents an alkyl group having 1 to 5 carbon atoms (such as a methyl, n-propyl, isobutyl, t-butyl, etc., group), an alkoxy group having 1 to 4 carbon atoms, a phenyl group, a phenyl group substituted with one or more of an alkyl group having 1 to 4 carbon atoms, an alkoxy group having 1 to 4 carbon atoms or a halogen atom (such as chlorine, bromine, iodine, etc., atom) or an aralkyl group wherein the alkyl moiety has 1 to 3 carbon atoms, which are useful as anti-hypertensive agents, a process for preparing 5-alkoxy-picolinic esters, and anti-hypertensive compositions containing the 5-alkoxy-picolinic esters.
5-烷氧基
吡啶酸酯的
化学式为(I):其中R代表具有1至6个碳原子的烷基基团,R.sub.1代表未取代的苯基团;一苯基团,该苯基团取代有一个或多个具有1至4个碳原子的烷基基团或乙酰基;一
邻苯二甲酰基团;一烷氧基烷基团,其中烷基部分和烷氧基部分各自具有1至4个碳原子;一烷氧基烷氧基烷基团,其中烷基部分和烷氧基部分各自具有1至4个碳原子;一
茚基团;或者一酰氧基烷基团,其
化学式为:其中R.sub.2代表氢原子或甲基基团,R.sub.3代表具有1至5个碳原子的烷基基团(例如,甲基、正丙基、异丁基、叔丁基等基团),具有1至4个碳原子的烷氧基团,苯基团,一苯基团,该苯基团取代有一个或多个具有1至4个碳原子的烷基基团,具有1至4个碳原子的烷氧基团或卤原子(例如
氯、
溴、
碘等原子)或一芳基烷基团,其中烷基部分具有1至3个碳原子,这些化合物可用作降压药物,一种制备5-烷氧基
吡啶酸酯的方法,以及含有5-烷氧基
吡啶酸酯的降压组合物。