Iodine-Mediated Oxidative Coupling of Hydroxamic Acids with Amines towards a New Peptide-Bond Formation
摘要:
An efficient and straightforward approach for the coupling of N-protected hydroxamic acids with an amino component in the presence of iodine is delineated. The reaction is mediated by the formation of unstable but reactive acyl nitroso intermediates. The peptide hydroxamic acids were found to be useful substrates in coupling reactions.
[reaction: see text] A one-step conversion of carboxylic acids to hydroxamicacids under very mild conditions is described. This simple and efficient method has been applied for the synthesis of enantiopure hydroxamate of alpha-amino acids and peptides.
Syntheses and Biological Activity Studies of Novel Sterol Analogs from Nitroso Diels−Alder Reactions of Ergosterol
作者:Baiyuan Yang、Patricia A. Miller、Ute Möllmann、Marvin J. Miller
DOI:10.1021/ol900997t
日期:2009.7.2
A series of novel sterol analogs was prepared using nitroso Diels-Alder reactions with ergosterol. Most cycloaddition reactions proceeded in an excellent regio- and stereoselective fashion. Further N-O bond cleavage of cycloadducts generated compounds with biological activity in PC-3 and MCF-7 cancer cell lines.
A Novel, Simple and Practical Protocol for N-Protected-α-Amino Hydroxamic Acids
作者:G. Vidyasagar Reddy
DOI:10.1080/00397919908085996
日期:1999.10
A facile single step methodology for the preparation of N-Protected-alpha-amino hydroxamic acids from readily accessible N-protected oxazolidinones using hydroxylamine hydrochloride and triethylamine is described.
Panguluri, Nageswara Rao; Narendra; Sureshbabu, Vommina V., Indian Journal of Chemistry - Section B Organic and Medicinal Chemistry, 2014, vol. 53B, # 11, p. 1430 - 1435
作者:Panguluri, Nageswara Rao、Narendra、Sureshbabu, Vommina V.
DOI:——
日期:——
Iodine-Mediated Oxidative Coupling of Hydroxamic Acids with Amines towards a New Peptide-Bond Formation
An efficient and straightforward approach for the coupling of N-protected hydroxamic acids with an amino component in the presence of iodine is delineated. The reaction is mediated by the formation of unstable but reactive acyl nitroso intermediates. The peptide hydroxamic acids were found to be useful substrates in coupling reactions.