Development of o-Chlorophenyl Substituted Pyrimidines as Exceptionally Potent Aurora Kinase Inhibitors
摘要:
The o-carboxylic acid substituted bisanilinopyrimidine 1 was identified as a potent hit (Aurora A IC50 = 6.1 +/- 1.0 nM) from in-house screening. Detailed structure-activity relationship (SAR) studies indicated that polar substituents at the para position of the B-ring are critical for potent activity. X-ray crystallography studies revealed that compound 1 is a type I inhibitor that binds the Aurora kinase active site in a DFG-in conformation. Structure-activity guided replacement of the A-ring carboxylic acid with halogens and incorporation of fluorine at the pyrimidine 5-position led to highly potent inhibitors of Aurora A that bind in a DFG-out conformation. B-Ring modifications were undertaken to improve the solubility and cell permeability. Compounds such as 9m with water-solubilizing moieties at the para position of the B-ring inhibited the autophosphorylation of Aurora A in MDA-MB-468 breast cancer cells.
ether linkage. The preliminary antitumor studies revealed that these agents exhibited potent cytotoxicity in vitro and therapeutic efficacy against human tumor xenografts in vivo. Remarkably, complete tumor remission in nude mice bearing human breast carcinoma MX-1 xenograft and significant suppression againstprostateadenocarcinoma PC3 xenograft were achieved by treating with compound 9aa′ at the maximum
Comparative study of dG affinity vs. DNA methylation modulating properties of side chain derivatives of procainamide: insight into its DNA hypomethylating effect
作者:R. L. Gawade、D. K. Chakravarty、J. Debgupta、E. Sangtani、S. Narwade、R. G. Gonnade、V. G. Puranik、D. D. Deobagkar
DOI:10.1039/c5ra20012a
日期:——
MCF-7 cancer cell line compared to other derivatives and procainamide. A docking study has also illustrated the plausible structural basis of DNA methylation modulating a property of procainamide. Strong association of procainamide with dG bases of partially denatured CpG rich DNA via H-bonding and other non-covalent interactions may alter the active topology of DNA required by the DNA-binding regulatory
Development of <i>o</i>-Chlorophenyl Substituted Pyrimidines as Exceptionally Potent Aurora Kinase Inhibitors
作者:Harshani R. Lawrence、Mathew P. Martin、Yunting Luo、Roberta Pireddu、Hua Yang、Harsukh Gevariya、Sevil Ozcan、Jin-Yi Zhu、Robert Kendig、Mercedes Rodriguez、Roy Elias、Jin Q. Cheng、Saïd M. Sebti、Ernst Schonbrunn、Nicholas J. Lawrence
DOI:10.1021/jm300334d
日期:2012.9.13
The o-carboxylic acid substituted bisanilinopyrimidine 1 was identified as a potent hit (Aurora A IC50 = 6.1 +/- 1.0 nM) from in-house screening. Detailed structure-activity relationship (SAR) studies indicated that polar substituents at the para position of the B-ring are critical for potent activity. X-ray crystallography studies revealed that compound 1 is a type I inhibitor that binds the Aurora kinase active site in a DFG-in conformation. Structure-activity guided replacement of the A-ring carboxylic acid with halogens and incorporation of fluorine at the pyrimidine 5-position led to highly potent inhibitors of Aurora A that bind in a DFG-out conformation. B-Ring modifications were undertaken to improve the solubility and cell permeability. Compounds such as 9m with water-solubilizing moieties at the para position of the B-ring inhibited the autophosphorylation of Aurora A in MDA-MB-468 breast cancer cells.
Identification of benzamides derivatives of norfloxacin as promising microRNA-21 inhibitors via repressing its transcription