Syntheses and Biological Activities of Selenium Analogs of .ALPHA.-Rat Atrial Natriuretic Peptide.

Abstract
Alpha-Rat atrial natriuretic peptide (7--28) (rANP (7--28)) and a series of its analogs in which half cystine residue(s) were substituted with half selenocystine residue(s) were synthesized by using the Fmoc-based solid-phase method followed by cyclization by means of dimethylsulfoxide (DMSO)-trifluoroacetic acid (TFA) oxidation. These analogs possess comparable activities in both receptor binding and cGMP accumulation in rat vascular smooth muscle cells to those of rAMP (7--28).

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