Synthesis of [1-(D-2-hydroxy-3-mercaptopropanoic acid)]oxytocin, a diastereoisomer of the hydroxy-isostere of oxytocin
Abstract
[1-(D-2-Hydroxy-3-mercaptopropanoic acid)]oxytocin was synthesized by azide coupling of O-benzyl-N-(D-3-benzylthio-2-hydroxypropanoyl)-L-tyrosine hydrazide with a heptapeptide. The hormone analogue had an uterotonic activity of 27·3 i.u. mg–1 and did not bind to neurophysin.