3,5-Bis(3′-indolyl)pyrazoles, analogues of marine alkaloid nortopsentin: Synthesis and antitumor properties
摘要:
series of 10 bis-indolylpyrazoles of type 9, 10 were obtained by cyclization of diketones 8 using hydrazine monohydrate or methylhydrazine in refluxing acetic acid/THF. Derivatives 9a,c,d were selected, by the National Cancer Institute (NCI, Bethesda, USA), to be evaluated against the full panel of about 60 human tumor cell lines derived from nine human cancer cell types and showed antiproliferative activity in the micromolar range. In particular, 9d, the most active compound was effective against all the tested cell lines with a GI(50) mean value of 3.23 mu M; TGI and LC50 values were 14.5 and 58.9 mu M having positive response on 91% and 41% of the tested cell lines, respectively. (C) 2007 Elsevier Ltd. All rights reserved.
A series of novel 2,5-bis(3'-indolyl)furans and 3,5-bis(3'-indolyl) isoxazoles were synthesized as antitumor agents. The antiproliferative activity was evaluated in vitro toward diverse human tumor cell lines. Initially 5 isoxazoles and 3 furan derivatives were tested against a panel of 10 human tumor cell lines and the most active derivatives 3c and 4a were selected to be evaluated in an extended panel of 29 cell lines. By exhibiting mean IC(50) values of 17.4 mu g/mL (3a) and 20.5 mu g/mL (4c), in particular 4c showed a high level of tumor selectivity toward the 29 cell lines. (C) 2010 Elsevier Ltd. All rights reserved.