Design, synthesis and pharmacophoric model building of new 3-alkoxymethyl/3-phenyl indole-2-carboxamides with potential antiproliferative activity
摘要:
Novel 3‐alkoxymethyl/3‐phenyl indole‐2‐carboxamide derivatives were synthesized and evaluated for their anticancer activity. Most of the tested compounds showed moderate to excellent activity against the tested cell lines (MCF7 and HCT116). 3‐Phenyl substitution on indole with p‐piperidinyl phenethyl 24a and p‐dimethylamino phenethyl 24c exhibited anticancer activity against MCF7 with IC50 of 0.13 and 0.14 μm, respectively. Further mechanistic study of the most active compounds through their action on cell cycle showed disturbance in cell cycle progression and cell cycle arrest. For future development of this series of compounds, pharmacophore study was conducted which indicated that the enhancement of the activity could be achieved through the addition of acceptor or donating groups to the already‐present indole nucleus.
Structure–Activity Relationship Study of Indole-2-carboxamides Identifies a Potent Allosteric Modulator for the Cannabinoid Receptor <b>1</b> (CB1)
作者:Mariam M. Mahmoud、Hamed I. Ali、Kwang H. Ahn、Aparna Damaraju、Sushma Samala、Venkata K. Pulipati、Srikanth Kolluru、Debra A. Kendall、Dai Lu
DOI:10.1021/jm4009828
日期:2013.10.24
The cannabinoid CB1 receptor is involved in complex physiological functions. The discovery of CB1 allosteric modulators generates new opportunities for drug discovery targeting the pharmacologically important CB1 receptor. 5-Chloro-3-ethyl-N-(4-(piperidin-1-yl)phenethyl)-1H-indole-2-carboxamide (ORG27569; 1) represents a new class of indole-2-carboxamides that exhibit allostery of CBI. To better understand 0 the SAR, a group of indole-2-carboxamide analogues were synthesized and assessed for allostery of the CB1 receptor. We found that within the structure of indole-2-carboxamides, the presence of the indole ring is preferred for maintaining the modulator's high binding affinity for the allosteric site but not for generating allostery on the orthosteric site. However, the C3 substituents of the indole-2-carboxamides significantly impact the allostery of the ligand. A robust CBI allosteric modulator 5-chloro-N-(4-(dimethylamino)phenethyl)-3-pentyl-1H-indole-2-carboxamide (11j) was identified. It showed an equilibrium dissociation constant (K-B) of 167.3 nM with a markedly high binding cooperativity factor (alpha = 16.55) and potent antagonism of agonist-induced GTP gamma S binding.
Design, synthesis and pharmacophoric model building of new 3-alkoxymethyl/3-phenyl indole-2-carboxamides with potential antiproliferative activity
作者:Mostafa H. Abdelrahman、Ahmed S. Aboraia、Bahaa G. M. Youssif、Bakheet E. M. Elsadek
DOI:10.1111/cbdd.12928
日期:2017.7
Novel 3‐alkoxymethyl/3‐phenyl indole‐2‐carboxamide derivatives were synthesized and evaluated for their anticancer activity. Most of the tested compounds showed moderate to excellent activity against the tested cell lines (MCF7 and HCT116). 3‐Phenyl substitution on indole with p‐piperidinyl phenethyl 24a and p‐dimethylamino phenethyl 24c exhibited anticancer activity against MCF7 with IC50 of 0.13 and 0.14 μm, respectively. Further mechanistic study of the most active compounds through their action on cell cycle showed disturbance in cell cycle progression and cell cycle arrest. For future development of this series of compounds, pharmacophore study was conducted which indicated that the enhancement of the activity could be achieved through the addition of acceptor or donating groups to the already‐present indole nucleus.