1-(Cyanomethyl)benzotriazole as a Convenient Precursor for the Synthesis of 2-Substituted Thiazoles
摘要:
Treatment of 1-(cyanomethyl)benzotriazole with hydrogen peroxide followed by a Lawesson reagent afforded by a Lawesson reagent afforded (benzotriazol-1-yl)thioacetamide which condensed with alpha-halo carbonyl compounds (Hantzsch thiazole synthesis) to give the corresponding 2-(benzotriazol-1-ylmethyl)thiazoles. Lithiation of 2-(benzotriazol-1-ylmethyl)-4-phenylthiazole with butyllithium occurred exclusively at the methylene group, and subsequent quenching of the resulting anion with alkyl halides produced the corresponding alkylated products in good yields. Treatment of these intermediates with Grignard reagents in toluene or with electron-rich heterocycles in the presence of zinc bromide resulted in the displacement of benzotriazole to afford the corresponding thiazoles with elaborated 2-substituents.
EL-REEDY, A. M.;HUSSAIN, S. M.;YOUSSEF, M. M. M., J. PRAKT. CHEM., 330,(1988) N 4, C. 521-529
作者:EL-REEDY, A. M.、HUSSAIN, S. M.、YOUSSEF, M. M. M.
DOI:——
日期:——
COMPOSITIONS AND METHODS FOR TREATMENT OF LEUKEMIA
申请人:Grembecka Jolanta
公开号:US20110065690A1
公开(公告)日:2011-03-17
The invention relates generally to effective treatment leukemia. In particular, the present invention provides compositions and methods to inhibit the interaction of menin with MLL and MLL-fusion oncoproteins, and well as systems and methods to screen for such compositions.