Cyclic hexapeptide oxytocin antagonists. Potency-, selectivity-, and solubility-enhancing modifications
作者:Roger M. Freidinger、P. D. Williams、R. D. Tung、M. G. Bock、D. J. Pettibone、B. V. Clineschmidt、R. M. DiPardo、J. M. Erb、V. M. Garsky
DOI:10.1021/jm00169a001
日期:1990.7
Development of a novel class of cyclic hexapeptide oxytocin antagonists based on a natural product
作者:Peter D. Williams、Mark G. Bock、Roger D. Tung、Victor M. Garsky、Debra S. Perlow、Jill M. Erb、G. F. Lundell、Norman P. Gould、Willie L. Whitter
DOI:10.1021/jm00099a019
日期:1992.10
optimal combination of cyclic amino acid ring sizes at positions 1, 4, and 5 and the role of the N-alkyl substituent at position 6 was elucidated. The lipophilic amino acids at positions 2 and 3 and the unusual amino acid D-dehydropiperazic acid at position4 were found to be the most critical residues for obtaining good oxytocin receptor affinity. Analogs containing a basic side chain at the less critical