Synthesis of imidazo[1,5,4-de]quinoxalin-9-ones, benzimidazole analogues of pyrroloiminoquinone marine natural products
摘要:
The imidazoquinoxalinones 1 and 2 are benzimidazole analogues of indole-based marine natural products called makaluvamins. The stabilized cation 1 and the zwitterion 2 were prepared in similar to9 steps from readily available starting materials. Compound 1 is more cytostatic and cytotoxic than 2 and also shows activity in the hollow fiber assay. Unlike the indole-based natural products, 1 and 2 are not potent topoisomerase II inhibitors. Their pattern of cytotoxic and cyostatic activity could be related to inhibition of protein tyrosine kinases. (C) 2004 Elsevier Ltd. All rights reserved.
Synthesis of imidazo[1,5,4-de]quinoxalin-9-ones, benzimidazole analogues of pyrroloiminoquinone marine natural products
摘要:
The imidazoquinoxalinones 1 and 2 are benzimidazole analogues of indole-based marine natural products called makaluvamins. The stabilized cation 1 and the zwitterion 2 were prepared in similar to9 steps from readily available starting materials. Compound 1 is more cytostatic and cytotoxic than 2 and also shows activity in the hollow fiber assay. Unlike the indole-based natural products, 1 and 2 are not potent topoisomerase II inhibitors. Their pattern of cytotoxic and cyostatic activity could be related to inhibition of protein tyrosine kinases. (C) 2004 Elsevier Ltd. All rights reserved.
Synthesis and Biological Evaluation of Imidazoquinoxalinones, Imidazole Analogues of Pyrroloiminoquinone Marine Natural Products
作者:Hung Hoang、Daniel V. LaBarbera、Kaleem A. Mohammed、Chris M. Ireland、Edward B. Skibo
DOI:10.1021/jm0700870
日期:2007.9.1
This report describes the synthesis and biological activity of imidazoquinoxalines, benzimidazole-based analogues of indole-based pyrroloiminoquinone marine naturalproducts. Our analogues consist of series 1, which possesses the ethylene tether and extended amidine feature found in the pyrroloiminoquinone naturalproducts, and series 2, which also has the ethylene tether but with an electrostatically
Synthesis of imidazo[1,5,4-de]quinoxalin-9-ones, benzimidazole analogues of pyrroloiminoquinone marine natural products
作者:Daniel V. LaBarbera、Edward B. Skibo
DOI:10.1016/j.bmc.2004.10.016
日期:2005.1
The imidazoquinoxalinones 1 and 2 are benzimidazole analogues of indole-based marine natural products called makaluvamins. The stabilized cation 1 and the zwitterion 2 were prepared in similar to9 steps from readily available starting materials. Compound 1 is more cytostatic and cytotoxic than 2 and also shows activity in the hollow fiber assay. Unlike the indole-based natural products, 1 and 2 are not potent topoisomerase II inhibitors. Their pattern of cytotoxic and cyostatic activity could be related to inhibition of protein tyrosine kinases. (C) 2004 Elsevier Ltd. All rights reserved.