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.
Corsano et al., Annali di Chimica, 1958, vol. 48, p. 140,154
作者:Corsano et al.
DOI:——
日期:——
US4268438A
申请人:——
公开号:US4268438A
公开(公告)日:1981-05-19
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.
ONWUYALI, E. I.;SCHEINMANN, F., ISR. J. CHEM., 1985, 26, N 2, 163-165