Synthesis and β-sheet propensity of constrained N-amino peptides
作者:Matthew P. Sarnowski、Kyle P. Pedretty、Nicole Giddings、H. Lee Woodcock、Juan R. Del Valle
DOI:10.1016/j.bmc.2017.08.017
日期:2018.3
The stabilization of β-sheet secondary structure through peptide backbone modification represents an attractive approach to protein mimicry. Here, we present strategies toward stable β-hairpinfolds based on peptide strand N-amination. Novel pyrazolidinone and tetrahydropyridazinone dipeptide constraints were introduced via on-resin Mitsunobu cyclization between α-hydrazino acid residues and a serine
Access to Enantiopure α-Hydrazino Acids for <i>N</i>-Amino Peptide Synthesis
作者:Chang Won Kang、Matthew P. Sarnowski、Yassin M. Elbatrawi、Juan R. Del Valle
DOI:10.1021/acs.joc.6b02718
日期:2017.2.3
amide substituents have received less attention due, in part, to the lack of practical synthetic strategies. Here, we report the synthesis of α-hydrazino acids derived from 19 out of the 20 canonical proteinogenic amino acids and demonstrate their use in the solid-phase synthesis of N-amino peptide derivatives.
[EN] BORONATES AS ARGINASE INHIBITORS<br/>[FR] BORONATES EN TANT QU'INHIBITEURS D'ARGINASE
申请人:MARS INC
公开号:WO2012058065A1
公开(公告)日:2012-05-03
Compounds according to Formula I are potent inhibitors of Arginase I and II activity: (I) where R1, R2, R3, R4, D, W, X, Y, and Z are defined in the specification. The invention also provides pharmaceutical compositions of the compounds and methods of their use in treating or preventing a disease or a condition associated with arginase activity.
Multicomponent synthesis of hydrazino depsipeptides
作者:Josipa Suć、Danijela Barić、Ivanka Jerić
DOI:10.1039/c6ra23317a
日期:——
The Passerini reaction of α-hydrazino acids, carbonyl compounds and isocyanides yielded hydrazino depsipeptides, a new class of backbone extended peptidomimetics comprising amide bond isostere. A wide range of carbonyl and isocyano components were used along the α-hydrazino acids carrying three different Nα protecting groups. The kinetics and thermodynamic equilibrium of the rate-determining step of
N-amination of amino acids and its derivatives using N-Boc-O-tosyl hydroxylamine as an efficient NH-Boc transfer reagent: electrophilic amination
作者:Thankappan Baburaj、Sivalingam Thambidurai
DOI:10.1016/j.tetlet.2012.02.075
日期:2012.5
biologically active heterocyclic derivatives, were synthesized by electrophilic amination methodology using N-Boc-O-tosyl hydroxylamine as an efficient NH-Boc transfer reagent. Also, we have demonstrated the conversion of other amino acid derivatives such as amino esters and amino alcohols into β-Boc-hydrazino derivatives using this reagent.