Polynuclear blocks consisting of nonfused heterocycles of the azole series, connected through methylene bridges, were synthesized by successive addition of azole units via cycloaddition of organic azides to the triple bond of N-(2-propynyl)azoles, as well as via reaction of azide ion at the cyano group of cyanomethylazoles. Initial N-(2-propynyl)azoles were prepared by reaction of 2-propynyl bromide with 1,2,3-triazoles, benzotriazole, and tetrazoles; cyanomethylazoles were obtained by alkylation of azoles with chloroacetonitrile. An analogous scheme was used to add heterocyclic units to 2-phenyl-1,2,3-triazole-4-carbonitrile. In this case, the first two heterocyclic units are linked through the ring carbon atom.
SYNTHESIS OF BIHETEROCYCLIC α-AMINOPHOSPHONIC ACID DERIVATIVES
作者:S. Achamlale、A. Elachqar、A. El Hallaoui、A. Alami、S. Elhajji、M. L. Roumestant、Ph. Viallefont
DOI:10.1080/10426509808035736
日期:1998.9.1
Abstract We report here the synthesis of biheterocyclic α-aminophosphonic acidderivatives by 1,3 dipolar cycloaddition of acetylenic compounds, prepared in the laboratory, on α-azido α-amino phosphonic esters 1 [1a].
New series of N-(2,3,3-triiodoallyl) and N-(3-iodopropargyl) azole derivatives (100 compounds) involving pyrrole, pyrazole, imidazole, triazole, and tetrazole nuclei were synthesized successively with the aid of quantitative structure-activity relationship (QSAR) analysis to obtain potent antifungal agents. Starting from the derivatives of nitropyrrole-containing antibiotics, the QSAR analysis of the pyrrole derivatives against Candida albicans and Trichophyton mentagrophytes strains indicated the positive contribution of the nitro group and negative effect of the size of molecule. Further application of the QSAR analysis on the multi-azole derivatives revealed the importance of hydrophobicity and electronegativity as well as steric effect to the activities and led to the synthesis of one of the most potent iodo compounds, 2-(2,3,3-triiodoallyl)tetrazole (67, ME1401).
Synthesis of polynuclear uncondensed tri- and tetrazoles
作者:L. I. Vereshchagin、A. V. Maksikova、L. G. Tikhonova、S. R. Buzilova、G. V. Sakovich
DOI:10.1007/bf00505701
日期:1981.5
VERESHCHAGIN L. I.; MAKSIKOVA A. V.; TIXONOVA L. G.; BUZILOVA S. R.; SAKO+, XIMIYA GETEROTSIKL. SOEDIN., 1981, HO 5, 688-693
作者:VERESHCHAGIN L. I.、 MAKSIKOVA A. V.、 TIXONOVA L. G.、 BUZILOVA S. R.、 SAKO+