| 摘要 |
<p>Compounds of formula (I): <CHEM> (wherein: R<1> represents an optionally substituted alkyl, cycloalkyl, aryl, partially hydrogenated aryl or heterocyclic group; R<2>, R<3>, R<4> and R<5> represent hydrogen or an optionally substituted alkyl, cycloalkyl, aralkyl, aryl, heterocyclic or heterocyclic-alkyl group or any adjacent pair thereof form a cyclic structure, at least one not being hydrogen; A represents a bond, or a methylene, ethylene, oxymethyl or thiomethyl group; B represents an alkylene, alkylidene, cycloalkylene or cycloalkylidene group; and n is 0, 1 or 2) and salts and esters thereof are hypotensive agents.</p> |
