Synthesis of Unnatural LipohilicN-(9H-Fluoren-9-ylmethoxy)carbonyl-Substituted ?-Amino Acids and Their Incorporation into Cyclic RGD-Peptides: A structure-activity study
作者:Marcus Koppitz、Martin Huenges、Rainer Gratias、Horst Kessler、Simon L. Goodman、Alfred Jonczyk
DOI:10.1002/hlca.19970800423
日期:1997.6.30
Xaa = Ahd or Hd-Gly (1 or 2), a βII′/γ-turn-like arrangement with D-Phe in i+1 position of the β-turn is found. Peptides II with D-Xaa = D-Ahd or Hd-Gly (3 or 4) exhibit a βII′/γ-turn conformation with Gly in i+1 position of the β-turn, whereas II with Ahd instead of D-Xaa, i.e., lacking a D-amino acid in position 4 or 5 (5). adopts no defined conformation. However, in assays of receptor specificity