Design and synthesis of tryptophan containing peptides as potential analgesic and anti-inflammatory agents
作者:R. Suhas、D. Channe Gowda
DOI:10.1002/psc.2431
日期:2012.8
A new series of smaller peptides with tryptophan at C‐terminal and varying N‐protected amino acids/peptides were designed, synthesized and characterized by analytical and spectroscopic techniques. Analgesic and anti‐inflammatory properties of these peptides were carried out in vivo using tail‐flick method and carrageenan‐induced paw edema method, respectively, at different doses and different time
Substituted derivatives of 3-amino-2-hydroxypropionic acid as inhibitors
申请人:Warner-Lambert Company
公开号:US05135914A1
公开(公告)日:1992-08-04
Novel substituted derivatives of 3-amino-2-hydroxypropionic acid are described, as well as methods for the preparation and pharmaceutical compositions of same, which are useful as renin inhibitors and thus useful in controlling hypertension, hyperaldosteronism and congestive heart failure as well as diagnostic agents.
Functionalized alkyl and alenyl side chain derivatives of glycinamides as farnesyl transferase inhibitors
申请人:Warner-Lambert Company
公开号:US06369034B1
公开(公告)日:2002-04-09
The present invention provides compounds of Formula (I). The present invention also provides a method of treating cancer and treating or preventing restenosis or atherosclerosis. Also provided by the present invention is a pharmaceutically acceptable composition containing a compound of Formula (I).
A side-chain photoactivatable auxiliary-mediated native chemical peptide ligation
作者:Avijit K. Adak、Yung-Yu Su、Wei-Hao Wang、Chin-Lan Lin、Hao Gu、Yi-Chen Huang、Zhe-Jie Zhang、Chai-Lin Kao、Chun-Cheng Lin
DOI:10.1016/j.tet.2023.133554
日期:2023.9
Photoactivatable ligationauxiliaries present an attractive approach for expanding the applicability of nativechemicalligation (NCL). In contrast to thiol-based mercaptobenzyl-type ligation scaffolds, photoactivatable auxiliaries are cleaved after ligation by photolysis, thereby simplifying protein assembly in non-cysteine NCL and causing minimal perturbation to the native polypeptide chains. This
Biomimetic Catalysis of Intermodular Aminoacyl Transfer
作者:Keith M. Wilcoxen、Luke J. Leman、Dana A. Weinberger、Zheng-Zheng Huang、M. Reza Ghadiri
DOI:10.1021/ja067124h
日期:2007.1.1
Intermodular aminoacyl transfer is the fundamental bond-forming reaction in the biosynthesis of polypeptides by ribosomes and nonribosomal peptide synthetases (NRPS). Here we report the design and functional characterizations of short synthetic alpha-helical peptides that mimic the aminoacyl loading and intermodular aminoacyl transfer steps of NRPS with aminolysis rate enhancements in neutral aqueous solutions of up to 5400-fold (k(cat)/k(uncat)). The catalysts operate as noncovalently associated peptide assemblies with composite active sites fashioned at the interface between helical subunits. Following the substrate loading at the active site cysteine, the juxtaposition of the resulting aminoacyl thiolester and the nucleophilic amine of the acyl acceptor moiety gives rise to high effective concentrations (up to 54 M) that facilitate interhelical aminoacyl transfer with rates typically exceeding 10(-4) sec(-1). Moreover, studies based on homo- and heteromeric assemblies, active site amino acid substitutions, kinetic analysis, and reaction modeling indicate that the de novo designed supramolecular catalysts reported herein exhibit some of the basic characteristics of natural enzymes, including precise positioning and pK(a) modulation of active site residues, covalent catalysis, and multiple product turnovers.