Synthesis and cytotoxic activities of 1-benzylidine substituted β-carboline derivatives
摘要:
A series of new beta-carboline derivatives, bearing a benzylidine substituent at position-1, has been prepared and evaluated in vitro against a panel of human cell lines. The N-2-benzylated beta-carbolinium bromates represented the most interesting cytotoxic activities. In particular, compounds 19 were found to be the most potent compounds with IC50 values lower than 5 mu M against 10 strains human tumor cell lines. These results confirmed that the N-2-benzyl substituent on the beta-carboline ring played an important role in the modulation of the cytotoxic activities and suggested that further development of such compounds may be interest. (C) 2008 Elsevier Ltd. All rights reserved.
Synthesis and structure–activity relationships of harmine derivatives as potential antitumor agents
摘要:
Harmine, a naturally occurring beta-carboline alkaloid, showed good antitumor activities together with remarkable neurotoxic effects in animal models. In order to search for novel leading compounds endowed with better antitumor activities and less neurotoxicities, a series of harmine derivatives were designed and synthesized by modification of position-2, 7 and 9 of beta-carboline nucleus, and their cytotoxic activities against human tumor cell lines were investigated. Acute toxicities and antitumor activities of the selected compounds in mice were also evaluated. Structure activity relationships studies confirmed that (1) the 7-methoxy structural moiety was the pharmacophore responsible for the neurotoxic effects of this class of compounds; (2) the substituents in position-2 and 9 played a vital role in modulation of their antitumor activities. (C) 2012 Elsevier Masson SAS. All rights reserved.
A series of novel N-2-alkylated quaternary beta-carbolines was synthesized by modification of position-1, 2,7 and 9 of beta-carboline nucleus with various alkyl and arylated alkyl substituents, and their cytotoxic activities in vitro and antitumor potencies in mice were evaluated. Compound 3m was found to be the most potent antitumor agent. SARs analysis revealed that (1) the substituents in position-2 and 9 of beta-carboline nucleus played a vital role in modulation of antitumor activity; (2) the benzyl and 3-phenylpropyl substituents in position-2 and 9 of beta-carboline ring were the optimal substituents giving rise to significant antitumor agent. These compounds might be a novel promising class of antitumor agents with clinical development potential. (C) 2013 Elsevier Masson SAS. All rights reserved.
Synthesis and structure–activity relationships of harmine derivatives as potential antitumor agents
Harmine, a naturally occurring beta-carboline alkaloid, showed good antitumor activities together with remarkable neurotoxic effects in animal models. In order to search for novel leading compounds endowed with better antitumor activities and less neurotoxicities, a series of harmine derivatives were designed and synthesized by modification of position-2, 7 and 9 of beta-carboline nucleus, and their cytotoxic activities against human tumor cell lines were investigated. Acute toxicities and antitumor activities of the selected compounds in mice were also evaluated. Structure activity relationships studies confirmed that (1) the 7-methoxy structural moiety was the pharmacophore responsible for the neurotoxic effects of this class of compounds; (2) the substituents in position-2 and 9 played a vital role in modulation of their antitumor activities. (C) 2012 Elsevier Masson SAS. All rights reserved.
Synthesis and cytotoxic activities of 1-benzylidine substituted β-carboline derivatives
A series of new beta-carboline derivatives, bearing a benzylidine substituent at position-1, has been prepared and evaluated in vitro against a panel of human cell lines. The N-2-benzylated beta-carbolinium bromates represented the most interesting cytotoxic activities. In particular, compounds 19 were found to be the most potent compounds with IC50 values lower than 5 mu M against 10 strains human tumor cell lines. These results confirmed that the N-2-benzyl substituent on the beta-carboline ring played an important role in the modulation of the cytotoxic activities and suggested that further development of such compounds may be interest. (C) 2008 Elsevier Ltd. All rights reserved.