Method of Synthesizing Quinoxaline Derivative by Microwave Irradiation
申请人:Takabatake Toru
公开号:US20090048445A1
公开(公告)日:2009-02-19
There is disclosed a method of synthesizing a quinoxaline derivative in which toxicity, corrosiveness and permeation are low and which is excellent in safety and which attains a reduced reaction time, a greatly improved yield and excellent economical efficiency. The object is achieved by a method of synthesizing a quinoxaline derivative which comprises adsorbing a benzofuroxan derivative and a β-diketone derivative on a solid support, and then heating the derivatives in a solid state by microwave irradiation to dehydrocyclize them.
METHOD FOR TREATING A TUMOUR DISEASE AND METHOD FOR SELECTIVELY INHIBITING TUMOUR CELL GROWTH USING A QUINOXALINE-1,4-DIOXIDE DERIVATIVE
申请人:OOO "A-Laboratory"
公开号:EP3138565A1
公开(公告)日:2017-03-08
The present invention relates to the fields of pharmacology and medicine, in particular, to the medical application of 6,7-difluoro-3-phenyl-2-cyanoquinoxaline 1,4-dioxide of formula I:
for inhibition of tumor cell growth or treatment of tumor diseases.
We report on the simple and quick synthesis of quinoxaline 1,4-dioxides in solvent-free conditions under microwave irradiation. Heating of various benzofuroxans and beta-ketoesters or 1,3-diketones adsorbed on silica gel in a microwave oven for two minutes affords diverse biologically attractive quinoxaline 1,4-dioxides in high to excellent yields. Silica gel functions not only as support using microwave but also as catalyst and dehydration reagent.
JARRAR A. A.; HALAWI S. S.; HADDADIN M. J., HETEROCYCLES, 1976, 4, NO 6, 1077-1082