The synthesis and antihypertensive activity of a series of novel 4-(cyclic amido)-Wl- benzopyrann-3-ols, administered orally to conscious spontaneously hypertensive rats, are described. The effects of lactam ring size, the presence of heteroatoms in the lactam ring, substitution at C (2) and C (3), relative stereochemistry at C (3) and C (4), and aromatic substitution pattern on the blood pressure lowering activity of this series have been ...
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