A series of novel phenacylimidazolium derivatives, bearing an aryl or alkyl substituent at position-1 and a phenacyl substituent at position-3 of the imidazole ring, has been prepared and evaluated in vitro against a panel of human tumor cell lines. Phenacylimidazolium bromides bearing a highly sterically hindered aryl group at position-1 and an electron-rich phenacyl or naphthylacyl substituent at position-3 of imidazole ring proved to be more active than imidazolium bromides with other substituted groups. In particular, compound 5j was found to be the most potent compounds with IC50 values lower than 5.0 mu M against 8 strains human tumor cell lines and more active than cisplatin (DDP). (C) 2009 Elsevier Ltd. All rights reserved.
Koordination von 1,4-diaza-1,3-dienen (dad) an carbonyldieisen fragmente
作者:Hans-Werner Frühauf、Joachim Breuer
DOI:10.1016/0022-328x(86)80009-2
日期:1986.2
Unusual reactivity of N-tert-butylimines under FVT conditions
作者:Stanisław Leśniak、Beata Pasternak、Katarzyna Justyna、Thien Y. Vu、Thi Kieu Xuan Huynh、Saïd Khayar、Alain Dargelos、Anna Chrostowska
DOI:10.1016/j.tet.2012.10.090
日期:2013.1
Thermal reactions of N-tert-butyl-(E)-crotonaldimine (1a) and 1,4-di-(tert-butyl)-1,4-diazabuta-1,3-dien (glyoxal-bis-N-tert-butylimine) (1b) under FVT conditions have been studied. It has been found that at 800 °C compound 1a yielded pyrrole and crotononitrile, presumably via homolytic t-Bu–N bond cleavage and formation of the iminyl radical. In the reaction of 1b at 800 °C, 2-methylimidazole (4b)