An extension of the ‘Cusmano–Ruccia’ reaction is reported. 6-(4-chlorophenyl)-3-methyl-5-nitrosoimidazo[2,1-b]oxazole by the action of hydrochloricacid gives 3-(4-chlorobenzoyl)-5-methyl-1,2,4-oxadiazole (13); presumably via ammonium ion, CO2 and methanol elimination. The relevance of the nature of the atom of the B-ring linked to C-2 of the imidazole for the occurrence of the ring-into-ring interconversion
据报道,“ Cusmano-Ruccia”反应扩展了。6-(4-氯苯基)-3-甲基-5-硝基磺酰咪唑并[2,1- b ]恶唑在盐酸的作用下得到3-(4-氯苯甲酰基)-5-甲基-1,2,4-恶二唑(13); 大概是通过铵离子,CO 2和甲醇消除。与咪唑的C-2连接的B环的原子的性质与环到环的相互转化的发生的相关性再次得到证实。
Ring–Ring Interconversions of Nitrosoimidazoles. The Effect of some Condensed Six-Membered Rings on the Reactivity
effect of a condensedring on the reactivity of nitrosoimidazoles with hydrochloric acid has been extended to some six-membered rings: thus, the reactivity of 2-(4-chlorophenyl)-3-nitrosoimidazo[1,2-a]pyridine (6), 6-chloro-2-(4-chlorophenyl)-3-nitrosoimidazo[1,2-b]pyridazine (7), 2-(4-chlorophenyl)-3-nitrosoimidazo[1,2-a]pyrimidine (8a) and 2-(4-chlorophenyl)-3-nitrosoimidazo[1,2-a]pyrazine (9) has been
关于稠环对亚硝基咪唑与盐酸反应性的影响的研究已扩展到一些六元环:因此,2-(4-氯苯基)-3-亚硝基咪唑[1,2- a ]的反应性吡啶(6),6-氯-2-(4-氯苯基)-3-亚硝基磺并咪唑[1,2- b ]哒嗪(7),2-(4-氯苯基)-3-亚硝基磺并咪唑[1,2- a ]检验了嘧啶(8a)和2-(4-氯苯基)-3-亚硝基氨基咪唑并[1,2- a ]吡嗪(9)。观察到化合物6 – 9反应性的显着差异(分别进行了亚硝化,消除氨的开环,C 3片段的意外丢失和分解的开环互变)。
Imidazoindole derivatives and pharmaceutical compositions comprising
申请人:——
公开号:US04255573A1
公开(公告)日:1981-03-10
Pharmaceutical composition for chelating excess iron in a mammal and facilitating the removal of excess iron from the mammalian body are disclosed which comprise as active ingredient an iron-chelating agent selected from the group consisting of 5H-pyrimido(2',1':2,3)imidazo(4,5-b)indole having the formula ##STR1## 5H-pyrido(2',1':2,3)imidazo(4,5-b) indole having the formula ##STR2## or lower alkyl and/or halogen substituted derivatives thereof and pharmaceutically acceptable acid addition salts thereof. Furthermore the preparation of novel 5H-pyrimido(2',1':2,3)imidazo(4,5-b)indoles and intermediates thereof are disclosed.
Antifungal activity in vitro of some imidazo[1,2-a]pyrimidine derivatives
作者:Y Rival、G Grassy、A Taudou、R Ecalle
DOI:10.1016/0223-5234(91)90208-5
日期:1991.1
In regard to fungicidal activity of imidazole ring found in chemical compounds such as econazole, a series of 42 diversely substituted imidazo[1,2-alpha]phyrimidines was synthetized and examined for its antifungal activity in several species.
RIVAL, Y.;GRASSY, G.;TAUDOU, A.;ECALLE, R., EUR. J. MED. CHEM., 26,(1991) N, C. 13-18