Reactivity of<i>C</i>-Amino-1,2,4-triazoles toward Electrophiles: A Combined Computational and Experimental Study of Alkylation by Halogen Alkanes
作者:Victor M. Chernyshev、Anna G. Vlasova、Alexander V. Astakhov、Svitlana V. Shishkina、Oleg V. Shishkin
DOI:10.1021/jo502405q
日期:2015.1.2
3-amino- than for the 5-amino-1H-1,2,4-triazoles. Increasing electrophile hardness should increase the probability of attack at the N-4 atom of the triazole ring, whereas increasing softness should enhance the probability of attack at the N-2 atom and 3-NH2 group. Calculated transition state energies of model SN2 reactions and experimentalstudies showed that quaternization of 1-substituted 3-amino- and
计算和实验方法的组合用于检查C-氨基-1 H -1,2,4-三唑与亲电试剂反应的结构-反应关系。预测3-氨基-和3,5-二氨基-1 H -1,2,4-三唑的整体亲核性高于5-氨基-1 H -1,2,4-三唑的整体亲核性。Fukui函数和分子静电势表明,与5-氨基-1 H -1,2,4-三唑相比,3-氨基-涉及氨基的反应更容易发生。亲电子硬度的增加应增加在三唑环的N-4原子处发生进攻的可能性,而柔软性的增加应在N-2原子和3-NH处发生进攻的可能性2组。计算的模型S N 2反应的过渡态能和实验研究表明,许多烷基卤化物对1-取代的3-氨基-和3,5-二氨基-1 H -1,2,4-三唑进行季铵化反应的选择性低,且可以涉及N-2和N-4原子以及3-NH 2基团作为反应中心。一种基于容易获得的1-取代的3-乙酰氨基-1,2,4-季铵化的选择性合成1,4-二取代的3-氨基-和3,5-二氨基-1,2,4
A novel one-pot synthesis of 1,2,4-triazole-3,5-diamine derivatives from isothiocyanates and mono-substituted hydrazines
作者:Chunjian Liu、Edwin J. Iwanowicz
DOI:10.1016/s0040-4039(02)02871-x
日期:2003.2
1,2,4-Triazole-3,5-diamine derivatives were synthesized in moderate to high yields in one-pot reaction from the corresponding isothiocyanates, mono-substituted hydrazines, and sodium hydrogencyanamide, in the presence of 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride. Typically, two target compounds were obtained, but high regioselectivities to one isomer were observed when aromatic and
DIAMINOTRIAZOLES USEFUL AS INHIBITORS OF PROTEIN KINASES
申请人:Pierce C. Albert
公开号:US20080014189A1
公开(公告)日:2008-01-17
The present invention relates to inhibitors of protein kinases. The invention also provides pharmaceutical compositions comprising the compounds of the invention and methods of using the compositions in the treatment of various disorders.
Alkylation of acyl and sulfonyl derivatives of 3,5-diamino-1-phenyl-1,2,4-triazole
作者:V. M. Chernyshev、V. A. Rakitov、V. V. Blinov、V. A. Taranushich、Z. A. Starikova
DOI:10.1007/s10593-009-0290-y
日期:2009.4
Alkylation of 3-acylamino-, 5-amino-1-phenyl-3-tosylamino-1,2,4-triazoles and 3,5-diacetylamino-1-phenyl-1,2,4-triazole in the presence of an equimolar amount of sodium methylate in DMSO occurs regioselectively at the amide (sulfamide) group nitrogen atom. The benzylation of 3-acetylamino-5-amino-1-phenyl-1,2,4-triazole with excess base and benzyl chloride also alkylates the amino group at position 5. Alkylamino-1-R-1,2,4-triazoles can be conveniently prepared by alkylation of the corresponding acetylamino-1,2,4-triazoles in the presence of base and subsequent acid hydrolysis of the N-acetyl-N-alkyl derivatives.
Methods and Compositions for the Treatment of RAS Associated Disorders
申请人:Ratner Nancy
公开号:US20120302581A1
公开(公告)日:2012-11-29
The instant disclosure relates to compositions that may be useful as therapeutic agents for the treatment of disorders associated or caused by Ras deregulation or dysregulation, for example, disorders associated with alterations in the NF1 gene such as neurofibromatosis type I, fungal infections such as those caused by
Candida albicans
, and proliferative disorders such as glioblastoma.