Peptide ligation by chemoselective aminonitrile coupling in water
作者:Pierre Canavelli、Saidul Islam、Matthew W. Powner
DOI:10.1038/s41586-019-1371-4
日期:2019.7
N-to-C peptide ligation. Our model unites prebiotic aminonitrile synthesis and biological α-peptides, suggesting that short N-acyl peptide nitriles were plausible substrates during early evolution.Prebiotic peptide formation is achieved through chemoselective, high-yielding ligation of α-aminonitriles in water, showing selectivity for α-peptide coupling and tolerance of all proteinogenic amino acid residues
Treatments of various nitriles with TMSN3 and Bu2Sn(OAc)2 at 30 oC in benzene for 60 h yielded the corresponding 5-substituted 1H-tetrazoles in good to excellent yields. This method is a mild and efficient alternative reagent system for Wittenberger tetrazole-synthesis that uses TMSN3 and Bu2SnO in toluene at high temperature (93–110 °C) for 24–72 h.
[EN] DIPEPTIDYL PEPTIDASE INHIBITORS<br/>[FR] INHIBITEURS DE DIPEPTIDYL PEPTIDASE
申请人:SYRRX INC
公开号:WO2004103993A1
公开(公告)日:2004-12-02
Pharmaceuticals, kits and methods are provided for use with DPP-IV and other S9 proteases that comprise a compound with the formula: (I) where the labeled substituents are as described herein.
Design and synthesis of aminocoumarin derivatives as DPP-IV inhibitors and anticancer agents
作者:Rina Soni、Shubhangi S. Soman
DOI:10.1016/j.bioorg.2018.05.008
日期:2018.9
role in earlier stages of cancer. Here we have reported design, synthesis and applications of aminocoumarin derivatives as DPP-IV inhibitors. Compounds have been synthesized and studied for their DPP-IV inhibition activity. Three compounds have shown moderate inhibition at 100 µM concentration. All compounds were also screened for their anticancer activity against A549 (Lung cancer cell line), MCF-7 (Breast