Synthesis of novel N-(primary) alkylhydroxamic acids
摘要:
Synthesis of N-primary alkylhydroxamic acids is described in this paper by benzolyloxylation (benzoyl peroxide) of n-alkylamine and modification of the usual reaction conditions to stabilise the N-alkyl-O-benzoylhydroxylamine as the hydrochloride; this circumvents acyl transfer to amide. N-Acylation of the formed hydroxylamine leads to the formation of N-primary alkyl-N-acyl-O-acylhydroxylamine, which is debenzoylated to hydroxamic acid using hydrazine hydrate.
Matlin,S.A. et al., Journal of the Chemical Society. Perkin transactions I, 1979, p. 2481 - 2487
作者:Matlin,S.A. et al.
DOI:——
日期:——
Mutagenicity of electrophilic N-acyloxy-N-alkoxyamides
作者:Antonio M Bonin、Tony M Banks、John J Campbell、Stephen A Glover、Gerard P Hammond、Arungundrum S Prakash、Colleen A Rowbottom
DOI:10.1016/s1383-5718(01)00189-9
日期:2001.7
N-acyloxy-N-alkoxybenzamides are mutagenic in TA100 without the need for metabolic activation with S9, Electronic effects of substituents on both the benzamide ring in N-acetoxy-N-butoxybenzamides or the benzyloxy ring in N-acetoxy-N-benzyloxybenzamides do not influence mutagenicity levels. For N-benzoyloxy-N-benzyloxybenzamides, mutagenicity levels are inversely related to the electron-withdrawing effect of substituents on the benzoyloxy leaving group. Since reactivities increase with increasing electron-withdrawing effects, mutagenicity correlates with stability rather than reactivity of these mutagens. Hydrophobicity is the dominant factor controlling mutagenicity levels and data for all mutagens correlate with computed log P values with a lower dependence (h = 0.22) than that recorded for indirect mutagens (h = 1.0), except where a sterically demanding p-tert-butyl substituent or a naphthyl group is present. N-acetoxy-N-butoxynaphthamide exhibits a much higher level of mutagenicity than predicted by its log P value and activity may be ascribed to an intercalative binding process with DNA rather than straightforward hydrophobic binding in the major or minor groove. Since these are direct-acting mutagens, structural factors influence binding and reactivity towards DNA. (C) 2001 Elsevier Science B.V. All rights reserved.
KLIEGEL, W.;NANNINGA, D., CHEM. BER., 1983, 116, N 7, 2616-2629
作者:KLIEGEL, W.、NANNINGA, D.
DOI:——
日期:——
Synthesis of novel N-(primary) alkylhydroxamic acids
作者:Lebert Grierson、M.John Perkins
DOI:10.1016/s0040-4039(00)60153-3
日期:1993.11
Synthesis of N-primary alkylhydroxamic acids is described in this paper by benzolyloxylation (benzoyl peroxide) of n-alkylamine and modification of the usual reaction conditions to stabilise the N-alkyl-O-benzoylhydroxylamine as the hydrochloride; this circumvents acyl transfer to amide. N-Acylation of the formed hydroxylamine leads to the formation of N-primary alkyl-N-acyl-O-acylhydroxylamine, which is debenzoylated to hydroxamic acid using hydrazine hydrate.