Exploration of the P1 SAR of aldehyde cathepsin K inhibitors
摘要:
The synthesis and biological activity of a series of aldehyde inhibitors of cathepsin K are reported. Exploration of the properties of the S(1) subsite with a series of alpha-amino aldehyde derivatives substituted at the P(1) position afforded compounds with cathepsin K IC(50)s between 52 microM and 15 nM.
Synthesis of α, β-unsaturated γ-amino esters with unprecedented high (E)-stereoselectivity and their conformational analysis in peptides
作者:Sachitanand M. Mali、Anupam Bandyopadhyay、Sandip V. Jadhav、Mothukuri Ganesh Kumar、Hosahudya N. Gopi
DOI:10.1039/c1ob05732d
日期:——
Mild, efficient and racemization-free synthesis of N-protected α, β-unsaturated γ-amino esters with unprecedented high E- stereoselectivity is described. This method is found to be compatible with Boc-, Fmoc- and other side chain protecting groups. The crystal conformations of the vinylogous γ-amino esters in monomers and in homo- and mixed dipeptides are studied. Further, the vinylogous homo-dipeptide showed a β-sheet conformation, while mixed α- and α,β-unsaturated γ-hybrid dipeptide adapted an irregular structure in single crystals.
Synthesis of Tetrasubstituted Symmetrical Pyrazines from β-Keto γ-Amino Esters: A Mild Strategy for Self-Dimerization of Peptides
作者:Mothukuri Ganesh Kumar、Varsha J. Thombare、Rupal D. Bhaisare、Anindita Adak、Hosahudya N. Gopi
DOI:10.1002/ejoc.201403237
日期:2015.1
facile synthesis of highly symmetricaltetrasubstitutedpyrazines through simple aerial oxidation of β-ketoγ-aminoesters is reported. The scope of the reaction was examined by use of various amino acid side-chain functional groups and peptides. The mild and efficient transformation of β-ketoγ-aminoesters into pyrazines may serve as an attractive strategy for self-dimerization of peptides.
Disclosed herein are small molecule calpain modulator compositions, pharmaceutical compositions, the use and preparation thereof.
本文公开了小分子钙蛋白酶调节剂组合物、药物组合物及其用途和制备方法。
[EN] CALPAIN MODULATORS AND THERAPEUTIC USES THEREOF<br/>[FR] MODULATEURS DE CALPAIN ET LEURS UTILISATIONS THÉRAPEUTIQUES
申请人:BLADE THERAPEUTICS INC
公开号:WO2018064119A8
公开(公告)日:2019-04-25
Synthesis and properties of the eight isostatine stereoisomers
作者:Kenneth L. Rinehart、Ryuichi Sakai、Vimal Kishore、David W. Sullins、Kai Ming Li
DOI:10.1021/jo00037a012
日期:1992.5
The eight possible stereoisomers of isostatine, (3S,4R,5S)-4-amino-3-hydroxy-5-methylheptanoic acid, have been synthesized from the four isomeric D- and L-isoleucinals and D- and L-allo-isoleucinals and ethyl lithioacetate. The eight isomers have been compared for the GC retention times of their bis(trifluoroacetyl) methyl ester derivatives and the H-1 NMR properties of the gamma-lactams derived from them. The natural isomer was shown to be the 3S,4R,5S isomer.