Novel Potent Orally Active Selective VEGFR-2 Tyrosine Kinase Inhibitors: Synthesis, Structure−Activity Relationships, and Antitumor Activities of N-Phenyl-N‘-{4-(4-quinolyloxy)phenyl}ureas
摘要:
N-Phenyl-N'-{4-(4-quinolyloxy)phenyl}ureas were found to be a novel class of potent inhibitors for the vascular endothelial growth factor receptor 2 (VEGFR-2) tyrosine kinase through synthetic modifications of a lead compound and structure-activity relationship studies. A representative compound 6ab, termed Ki8751, inhibited VEGFR-2 phosphorylation at an IC50 value of 0.90 nM, and also inhibited the PDGFR family members such as PDGFR(x and c-Kit at 67 nM and 40 nM, respectively. However, 6ab did not have any inhibitory activity against other kinases such as EGFR, HGFR, InsulinR and others even at 10000 nM. 6ab suppressed the growth of the VEGF-stimulated human umbilical vein endothelial cell (HUVEC) on a nanomolar level. 6ab showed significant antitumor activity against five human tumor xenografts such as GL07 (glioma), St-4 (stomach carcinoma), LC6 (lung carcinoma), DLD-1 (colon carcinoma) and A375 (melanoma) in nude mice and also showed complete tumor growth inhibition with the LC-6 xenograft in nude rats following oral administration once a day for 14 days at 5 mg/kg without any body weight loss.
QUINOLINE DERIVATIVES AND QUINAZOLINE DERIVATIVES INHIBITING AUTOPHOSPHORYLATION OF GROWTH FACTOR RECEPTOR ORIGINATING IN PLATELET AND PHARMACEUTICAL COMPOSITIONS CONTAINING THE SAME
申请人:KIRIN BEER KABUSHIKI KAISHA
公开号:EP0860433B1
公开(公告)日:2002-07-03
US6143764A
申请人:——
公开号:US6143764A
公开(公告)日:2000-11-07
Quinoline and quinazoline derivatives inhibiting platelet-derived growth
申请人:Kirin Beer Kabushiki Kaisha
公开号:US06143764A1
公开(公告)日:2000-11-07
The present invention relates to novel quinoline derivatives and quinazoline derivatives represented by the following formula (I): ##STR1## [wherein R.sub.1 and R.sub.2 are each independently H or C.sub.1 -C.sub.4 -alkyl, or R.sub.1 and R.sub.2 together form C.sub.1 -C.sub.3 -alkylene, X is O, S or CH.sub.2, W is CH or N, and Q is a substituted aryl group or substituted heteroaryl group] and their pharmaceutically acceptable salts, having platelet-derived growth factor receptor autophosphorylation inhibitory activity, to pharmaceutical compositions containing these compounds, and to methods for the treatment of diseases associated with abnormal cell growth such as tumors.
N-Phenyl-N'-4-(4-quinolyloxy)phenyl}ureas were found to be a novel class of potent inhibitors for the vascular endothelial growth factor receptor 2 (VEGFR-2) tyrosine kinase through synthetic modifications of a lead compound and structure-activity relationship studies. A representative compound 6ab, termed Ki8751, inhibited VEGFR-2 phosphorylation at an IC50 value of 0.90 nM, and also inhibited the PDGFR family members such as PDGFR(x and c-Kit at 67 nM and 40 nM, respectively. However, 6ab did not have any inhibitory activity against other kinases such as EGFR, HGFR, InsulinR and others even at 10000 nM. 6ab suppressed the growth of the VEGF-stimulated human umbilical vein endothelial cell (HUVEC) on a nanomolar level. 6ab showed significant antitumor activity against five human tumor xenografts such as GL07 (glioma), St-4 (stomach carcinoma), LC6 (lung carcinoma), DLD-1 (colon carcinoma) and A375 (melanoma) in nude mice and also showed complete tumor growth inhibition with the LC-6 xenograft in nude rats following oral administration once a day for 14 days at 5 mg/kg without any body weight loss.