Pyrazolo[1,5-a]-[1,3,5]-triazines 6a–d were obtained by an efficient one-step reaction from S,S-diethyl aroyliminodithiocarbonates 4a–d and 5-amino-3-methylpyrazole 5 or by an alternative two-step reaction from 5 and aroyl isothiocyanates 8a–d to give initially the thiourea derivatives 9a–d, which after S-ethylation and cyclization afforded compounds 6a–d. The intermediate 7a isolated from reaction
Synthesis of new pyrazole derivatives and their anticancer evaluation
作者:George Mihai Nitulescu、Constantin Draghici、Alexandru Vasile Missir
DOI:10.1016/j.ejmech.2010.07.064
日期:2010.11
A series of functionally substituted pyrazole compounds have been synthesized and evaluated in vitro for their antiproliferative effects on a panel of 60 cellular lines, according to the National Cancer Institute screening protocol. Three of the 12 tested compounds showed moderate antitumor activity, one of them being chosen for the 5-dose assay and presented logGl(50) values up to -5.75. (C) 2010 Elsevier Masson SAS. All rights reserved.
RAMIZ, MAHMOUD M. M.;ELGHANDOUR, AHMED H. H.;IBRAHIM, MOHAMED K. A.;MANSO+, ARCH. PHARM., 322,(1989) N, C. 557-560
作者:RAMIZ, MAHMOUD M. M.、ELGHANDOUR, AHMED H. H.、IBRAHIM, MOHAMED K. A.、MANSO+
DOI:——
日期:——
Studies on Amino-Azoles: Synthesis of 3-Methylaminopyrazole Derivatives
作者:Mahmoud M. M. Ramiz、Ahmed H. H. Elghandour、Mohamed K. A. Ibrahim、Omar A. E.-R. Mansour
DOI:10.1002/ardp.19893220909
日期:——
Diazotized 3 coupled with active methylene reagents to afford compounds 5 and 10. Aromatic diazonium salts coupled with 3 to afford 12, which was converted into 3 in refluxing AcOH/H2SO4. The reaction of 3 with isothiocyanates resulted in the formation of compounds 14, 15, and 16.