5-alkoxy-picolinic acids, process for preparation thereof and anti-hypertensive composition containing 5-alkoxy-picolini acids

Abstract From the Canadian patent

5-Alkoxy-picolinic acids and the salts and the esters thereof represented by the formula, (I) wherein R represents an alkyl group having 1 to 6 carbon atoms and M represents a hydrogen atom; a calcium atom; a sodium atom; a potassium atom; an aluminum atom; an unsubstituted 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 a chlorine bromine, iodine, etc. atom); a phthalidyl group; an alkoxyalkyl group wherein the alkyl moiety and the alkoxy moiety each has 1 to 4 carbon atoms; or an acyloxyalkyl group having the formula wherein R2 represents a hydrogen atom or a …