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Journal of medicinal chemistry

Synthesis and antihypertensive activity of 4-(substituted-carbonylamino)-2H-1-benzopyrans.


PMID 2391705

Abstract

The synthesis and antihypertensive activity of a series of novel 4-(substituted-carbonylamino)-2H-1-benzopyran-3-ols, administered orally to conscious spontaneously hypertensive rats, are described. Optimum activity was observed for compounds with alkyl, amino, or aryl groups flanking the carbonyl group. Of the alkyl and amino series the most potent compounds contained the methyl and methylamino groups, respectively. Several analogues have been compared with cromakalim (1) for their effects on potassium ion efflux in the rabbit mesenteric artery using rubidium-86 as a marker. The ability of each compound to enhance rubidium-86 efflux is approximately parallelled by its blood pressure lowering activity, and thus these analogues, like compound (1), belong to the series of drugs which have been classified as potassium-channel activators.

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