Synthesis and biological evaluation of 3,4-diaryl-5-aminoisoxazole derivatives
摘要:
A series of cis-restricted 3,4-diaryl-5-aminoisoxazoles have been synthesized and evaluated for their biological activities. Among them, compound 11a and 13a displayed potent cytotoxic activities in vitro against five human cancer cell lines with IC50 values in the low micromolar range and two compounds inhibited tubulin polymerization with IC50 value of 1.8, and 2.1 mu M, respectively, similar to that of CA-4. Compound 13a could arrest at the G2/M phase of the cell cycle at the concentration of 0.1 and 1.0 mu M and induce apoptosis at 0.1-1.0 mu M. (C) 2009 Elsevier Ltd. All rights reserved.
Synthesis and biological evaluation of 3,4-diaryl-5-aminoisoxazole derivatives
摘要:
A series of cis-restricted 3,4-diaryl-5-aminoisoxazoles have been synthesized and evaluated for their biological activities. Among them, compound 11a and 13a displayed potent cytotoxic activities in vitro against five human cancer cell lines with IC50 values in the low micromolar range and two compounds inhibited tubulin polymerization with IC50 value of 1.8, and 2.1 mu M, respectively, similar to that of CA-4. Compound 13a could arrest at the G2/M phase of the cell cycle at the concentration of 0.1 and 1.0 mu M and induce apoptosis at 0.1-1.0 mu M. (C) 2009 Elsevier Ltd. All rights reserved.
4,5‐Diaryl‐3‐aminopyrazole Derivatives as Analogs of Combretastatin A‐4: Synthesis and Biological Evaluation
作者:Tao Liu、Rong Cui、Jing Chen、Jun Zhang、Qiaojun He、Bo Yang、Yongzhou Hu
DOI:10.1002/ardp.201000069
日期:2011.5
A series of cis‐restricted 4,5‐diaryl‐3‐aminopyrazole derivatives were synthesized and tested for their cytotoxic activity in vitro against five human cancer cell lines (K562, ECA‐109, A549, SMMC‐7721, and PC‐3). Compounds 5a, 5b, 5d, and 6b showed potent cytotoxicity against all tested cell lines. Primary mechanism research on compound 5a indicated that it was a potent inhibitor of tubulin polymerization, arresting cell cycle in G2/M phase. The docking research showed the conformation of 5a overlaps well with CA‐4 in the crystallized protein complex, suggesting the 4,5‐diaryl‐3‐aminopyrazoles were good mimics of CA‐4.