Synthesis and Evaluation of Macrocyclic Transition State Analogue Inhibitors for α-Chymotrypsin
摘要:
Lactams 1 and 2 are readily formed from acyclic precursors in the presence of trypsin and chymotrypsin, respectively, identifying the macrocyclic ring system as a potential motif for constrained transition state analogue inhibitors of the serine peptidases. Ketone 3 was synthesized and shown to be a modest inhibitor of chymotrypsin (K-i = 220 muM), albeit 4-fold more potent than the acyclic hydroxy acid 25 (K-i = 1.5 mM as a mixture of epimers). A precursor (31) to the amino boronic acid 4 was also prepared; although this derivative was a potent inhibitor of chymotrypsin (K-i = 130 nM) by virtue of the boronic acid moiety, it showed no advantage over the des-amino analogue 32 (K-i = 120 nM), which is not capable of cyclizing.
[EN] MACROCYCLIC PEPTIDES USEFUL AS IMMUNOMODULATORS<br/>[FR] PEPTIDES MACROCYCLIQUES UTILES COMME IMMUNOMOLDULATEURS
申请人:BRISTOL MYERS SQUIBB CO
公开号:WO2016077518A1
公开(公告)日:2016-05-19
The present disclosure provides compounds which are immunomodulators and thus are useful for the amelioration of various diseases, including cancer and infectious diseases.
本公开提供了一些免疫调节剂化合物,因此对于改善各种疾病,包括癌症和传染病,具有用处。
Solid-Phase Synthesis and CD Spectroscopic Investigations of Novel β-Peptides from <scp>l</scp>-Aspartic Acid and β-Amino-<scp>l</scp>-alanine
[structure: see text] A solid-phasesynthesis method for the preparation of novel beta3- and beta2-peptides derived from l-aspartic acid and beta-amino-l-alanine, respectively, is described. The methodology allows independent buildup of the beta-peptide backbone and the introduction of sequential side chain substitutions. Representative peptides from the two classes, an amino-substituted beta3-hexapeptide
Covalent and Noncovalent Targeting of the Tcf4/β-Catenin Strand Interface with β-Hairpin Mimics
作者:Sarah L. Blosser、Nicholas Sawyer、Igor Maksimovic、Brahma Ghosh、Paramjit S. Arora
DOI:10.1021/acschembio.1c00389
日期:2021.8.20
synthetic mimics that capture the conformation of these epitopes and inhibit selected protein–protein interactions are rare. Here we describe covalent and noncovalent β-hairpin mimics of an extended strand region mediating the Tcf4/β-catenin interaction. Our efforts afford a rationally designed lead for an underexplored region of β-catenin, which has been the subject of numerous ligand discovery campaigns
Compounds having the structure
1
are peroxisome proliferator-activated receptor-gamma (PPAR-gamma) selective agonists and as such are useful in the modulation of blood glucose and the increase of insulin sensitivity in mammals. This activity of the piperazine derivatives of the invention make them particularly useful in the treatment of those conditions selected from the group consisting of diabetes, atherosclerosis, hyperglycemia, hyperlipidemia, obesity, syndrome X, insulin resistance, hypertension, heart failure and cardiovascular disease in mammals.