Structure activity studies of the serine-AIB dipeptide domain in 2,3-dihydroisothiazole based growth hormone secretagogues
作者:Britta Evers、Gerd Ruehter、Martina Berg、Jeffrey A. Dodge、Dirk Hankotius、Ulrike Hary、Louis N. Jungheim、Hans-Juergen Mest、Eva-Maria Martin de la Nava、Michael Mohr、Brian S. Muehl、Soenke Petersen、Birgit Sommer、Grit Riedel-Herold、Mark J. Tebbe、Kenneth J. Thrasher、Silke Voelkers
DOI:10.1016/j.bmc.2005.07.070
日期:2005.12
A series of growth hormone secretagogues (GHSs) based on 2,3-dihydroisothiazole has been synthesized in the search for a potential treatment of growth hormone deficiency or frailty in the elderly. This paper describes the evaluation of the SAR of the benzyl-D-Ser-aminoisobutyric acid dipeptide fragment. Introduction of substituents in the peptide backbone and in the phenyl ring has been investigated, as well as replacements for the benzyl group and for the AIB residue. A number of modifications resulted in enhanced potency over the parent benzyl-D-Ser-AIB derivative. (c) 2005 Elsevier Ltd. All rights reserved.