A series of C-terminus capped dipeptides and tripeptides was synthesiz
ed as growth hormone (GH) secretagogues. Among them, tripeptide Aib-D-
Trp-D-homoPhe-OEt showed low nanomolar activity in the rat pituitary a
ssay. Thus, we have demonstrated that the GH secretagogue activity of
the hexa- hepta-GH releasing peptides can be mimicked at the tripeptid
e level. (C) 1998 Elsevier Science Ltd. All rights reserved.