Detour of prenostodione synthesis towards pyrazolones for antibacterial activity
摘要:
Our attempts to prepare indolyl acid (3), enroute to prenostodione (2), from phenyl-hydrazine following a reported procedure of Fischer-Indole synthesis rather lead to ethyl 2-(5-oxo-1-phenyl-2,5-dihydro-1H-pyrazol- 3-yl) acetate as a major product, which underwent facile condensation with aldehydes to provide the pyrazolones. Intrigued by the opportunity for the diversity oriented synthesis of substituted pyrazolones, we have developed a facile one pot approach for pyrazolones and screened for antibacterial activity and, herein, results are reported. Published by Elsevier Ltd.
Detour of prenostodione synthesis towards pyrazolones for antibacterial activity
作者:Sivappa Rasapalli、Yingjun Fan、Menglong Yu、Christiaan Rees、John T. Harris、James A. Golen、Jerry P. Jasinski、Arnold L. Rheingold、Steven M. Kwasny、Timothy J. Opperman
DOI:10.1016/j.bmcl.2013.03.123
日期:2013.6
Our attempts to prepare indolyl acid (3), enroute to prenostodione (2), from phenyl-hydrazine following a reported procedure of Fischer-Indole synthesis rather lead to ethyl 2-(5-oxo-1-phenyl-2,5-dihydro-1H-pyrazol- 3-yl) acetate as a major product, which underwent facile condensation with aldehydes to provide the pyrazolones. Intrigued by the opportunity for the diversity oriented synthesis of substituted pyrazolones, we have developed a facile one pot approach for pyrazolones and screened for antibacterial activity and, herein, results are reported. Published by Elsevier Ltd.