Cyclic peptides as selective tachykinin antagonists
摘要:
Twenty homodetic cyclic peptides based on the C-terminal sequence of substance P were prepared (Table I) by a combination of solid-phase techniques and cyclizations using azide coupling Incorporation of dipeptide mimics based on substituted gamma-lactams were used in some cases to restrict their conformational mobility. Five of these cyclic peptides were shown to have high tachykinin antagonist activity (pA2 > 6) at NK-2 receptors (rat vas deferens). The two most potent of this series, XVII, cyclo(Gln-Trp-Phe-Gly-Leu-Met) (pA2 = 8.1), and I cyclo(Gln-Trp-Phe-(R)Gly[ANC-2]Leu-Met) (pA2 = 6.7), were selective for NK-2 receptors compared with the other tachykinin receptors (Table II).
Active esters of 9-fluorenylmethyloxycarbonyl amino acids and their application in the stepwise lengthening of a peptide chain
作者:Agnes Bodanszky、Miklos Bodanszky、Nagarajan Chandramouli、Joseph Z. Kwei、Jean Martinez、John C. Tolle
DOI:10.1021/jo01289a016
日期:1980.1
Peptide synthesis. Part 2. Procedures for solid-phase synthesis using N<sup>α</sup>-fluorenylmethoxycarbonylamino-acids on polyamide supports. Synthesis of substance P and of acyl carrier protein 65–74 decapeptide
作者:Eric Atherton、Christopher J. Logan、Robert C. Sheppard
DOI:10.1039/p19810000538
日期:——
Use of base-labile Nα-9-fluorenylmethoxycarbonylamino-acids in combination with acid-labile t-butyl or p-alkoxybenzyl side-chain or carboxy-terminal (resin-linkage) protecting groups enables solid-phasepeptidesynthesis to be carried out under exceptionally mild reaction conditions. The repetitive and vigorous acidic treatments required in conventional synthesis are avoided. High-yield syntheses of
Cyclic peptides as selective tachykinin antagonists
作者:Brian J. Williams、Neil R. Curtis、Alexander T. McKnight、Janet J. Maguire、Stephen C. Young、Daniel F. Veber、Raymond Baker
DOI:10.1021/jm00053a001
日期:1993.1
Twenty homodetic cyclic peptides based on the C-terminal sequence of substance P were prepared (Table I) by a combination of solid-phase techniques and cyclizations using azide coupling Incorporation of dipeptide mimics based on substituted gamma-lactams were used in some cases to restrict their conformational mobility. Five of these cyclic peptides were shown to have high tachykinin antagonist activity (pA2 > 6) at NK-2 receptors (rat vas deferens). The two most potent of this series, XVII, cyclo(Gln-Trp-Phe-Gly-Leu-Met) (pA2 = 8.1), and I cyclo(Gln-Trp-Phe-(R)Gly[ANC-2]Leu-Met) (pA2 = 6.7), were selective for NK-2 receptors compared with the other tachykinin receptors (Table II).