Intramolecular Hydrogen Bond Strength and p<i>K</i><sub>a</sub> Determination of <i>N</i>,<i>N‘</i>-Disubstituted Imidazole-4,5-dicarboxamides
作者:Jeremy R. Rush、Stacey L. Sandstrom、Jianqing Yang、Rebecca Davis、Om Prakash、Paul W. Baures
DOI:10.1021/ol047812a
日期:2005.1.1
N,N'-Disubstituted imidazole-4,5-dicarboxamides (I45DCs) form an intramolecular hydrogen bond worth an estimated 14 +/- 1 kcal/mol, as measured with a model structure in DMSO-d6 at 3 mM, thereby predisposing the molecular conformation to a folded rather than extended form. The I45DCs also show evidence of aggregation in both CDCl3 (>1 mM) and DMSO-d6 (>10 mM) solutions. These compounds are uncharacteristically
Synthesis of novel imidazole-4,5-dicarboxylic acid derivatives
作者:Naohiko Yasuda
DOI:10.1002/jhet.5570220239
日期:1985.3
A convenient general method for the synthesis of unsymmetrical imidazole-4,5-dicarboxylicacidderivatives is described. The key intermediates are 5,10-dioxo-5H,10H-diimidazo[1,5-a:1′,5′-d[pyrazine-1,6-dicarboxylic acid, -1,6-dicarboxylic ester and -1,6-dicarboxamide.
描述了合成不对称咪唑-4,5-二羧酸衍生物的方便的通用方法。关键中间体是5,10- dioxo -5 H,10 H-二咪唑[1,5- a:1',5'- d [吡嗪-1,6-二羧酸,-1,6-二羧酸酯和- 1,6-二甲酰胺。
Ivanov, E. I.; Bogatskii, A. V.; Abramovich, A. E., Doklady Chemistry, 1980, vol. 255, p. 516 - 518
作者:Ivanov, E. I.、Bogatskii, A. V.、Abramovich, A. E.
DOI:——
日期:——
Beta-lactam antibacterial agents
申请人:BEECHAM GROUP PLC
公开号:EP0071395B1
公开(公告)日:1988-08-10
IVANOV EH. I.; BOGATSKIJ A. V.; ABRAMOVICH A. E., DOKL. AN CCCP, 1980, 255, HO 2, 359-361
作者:IVANOV EH. I.、 BOGATSKIJ A. V.、 ABRAMOVICH A. E.