Abstract
[Glu(OMe)4]oxytocin (XVI) and [Mpr1, Glu(OMe)4]oxytocin (XVII) bearing a methyl ester group in place of the carboxamide group in position 4 of oxytocin were synthesized by (3 + 6) segment condensation using the S-trityl group for the protection of the cysteine side chains. Analogue XVI exhibited 10.5 U/mg in vitro uterotonic, and 42 U/mg avian vasodepressor, activity, and analogue XVII 21.4 U/mg and 82 U/mg of the respective activities. Both compounds showed no response in the rat pressor assay.
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Schedule a callMore From: International Journal of Peptide and Protein Research
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