Substituent Effects of N-(1,3-Diphenyl-1H-pyrazol-5-yl)benzamides on Positive Allosteric Modulation of the Metabotropic Glutamate-5 Receptor in Rat Cortical Astrocytes
摘要:
CDPPB [3-cyano-N-(1,3-diphenyl-1H-pyrazol-5-yl) benzamide] was recently described as the first centrally active, positive allosteric modulator of rat and human metabotropic glutamate receptor (mGluR) mGluR(5) subtype. We explored the structural requirements for potentiation of glutamate-induced calcium release in naturally expressed mGluR5 in cultured rat astrocytes and increasing affinity for the allosteric antagonist binding site by evaluating 50 analogues of CDPPB. In the fluorometric calcium assay, CDPPB exhibited an EC50 value of 77 +/- 15 nM in potentiating mGluR(5)-mediated responses in cortical astrocytes and a K-i value of 3760 ( 430 nM in displacing [H-3] methoxyPEPy binding in membranes of cultured HEK-293 cells expressing rat mGluR5. The structure-activity relationships showed that electronegative aromatic substituents in the para-position of the benzamide moiety of CDPPB increase potency. Both binding and functional activities were further increased with a halogen atom in the ortho-position of the 1-phenyl ring. These effects of substitution do not match those of either aromatic ring of MPEP [2-methyl-6-(phenylethynyl)-pyridine] for the antagonist allosteric binding site. Combination of the optimal substituents and aromatic positions resulted in 4-nitro-N-(1-(2-fluorophenyl)-3-phenyl-1H-pyrazol-5-yl) benzamide (VU-1545) showing K-i) 156 (29 nM and EC50) 9.6 (1.9 nM in the binding and functional assays, respectively.
A convenient one-pot synthesis of 4-amino-3-arylpyrazoles from α-phthaloylaminoacetophenones
摘要:
Condensation of alpha-phthaloylaminoacetophenones 1a-c with N,N-dimethylformamide dimethyl acetal afforded the novel enamines 3a-c. Cyclization of 3 with hydrazine, alkylhydrazine or phenylhydrazine salts (4a-d) gave 4-phthaloylamino-3-arylpyrazoles 7-9 in high yields. Deprotection of 7-9 was accomplished with hydrazine to provide 4-amino-3-arylpyrazoles 5 in good yields. (C) 1998 Elsevier Science Ltd. All rights reserved.
[EN] HETEROCYCLE SUBSTITUTED AMINO-PYRIDINE COMPOUNDS AND METHODS OF USE THEREOF<br/>[FR] COMPOSÉS AMINO-PYRIDINE SUBSTITUÉS HÉTÉROCYCLIQUES ET LEURS PROCÉDÉS D'UTILISATION
申请人:EPIZYME INC
公开号:WO2016044666A1
公开(公告)日:2016-03-24
The present disclosure relates to heterocycle substituted amino-pyridine compounds. The present disclosure also relates to pharmaceutical compositions containing these compounds and methods of treating cancer by administering these compounds and pharmaceutical compositions to subjects in need thereof. The present disclosure also relates to the use of such compounds for research or other non-therapeutic purposes.
A series of novel 3,4-disubstituted pyrazoles were synthesized. The cytotoxicity against U87MG glioma cell line have been investigated in vitro and three of these compounds showed promising inhibitory activity on cell growth with an IC(50) lower than 90 mu M. AutoDock molecular docking into type I TGF-beta receptor (TGF-beta-RI; PDB: 1py5) has been done for lead optimization of the mentioned compounds as potential TGF-beta-RI1 inhibitors. In particular, 3-aryl-4-amido pyrazole containing long omega-amino-aliphatic chain emerged as a good candidate for further optimization. Entrapment into targetable PEG-based micelles improved growth inhibition IC(50) values up to 100 nM and this could lead to a novel drug delivery strategy for treating glioblastoma. (C) 2010 Elsevier Masson SAS. All rights reserved.
HETEROCYCLE SUBSTITUTED AMINO-PYRIDINE COMPOUNDS AND METHODS OF USE THEREOF
申请人:Epizyme, Inc.
公开号:US20170291890A1
公开(公告)日:2017-10-12
The present disclosure relates to heterocycle substituted amino-pyridine compounds. The present disclosure also relates to pharmaceutical compositions containing these compounds and methods of treating cancer by administering these compounds and pharmaceutical compositions to subjects in need thereof. The present disclosure also relates to the use of such compounds for research or other non-therapeutic purposes.
Substituent Effects of <i>N</i>-(1,3-Diphenyl-1<i>H</i>-pyrazol-5-yl)benzamides on Positive Allosteric Modulation of the Metabotropic Glutamate-5 Receptor in Rat Cortical Astrocytes
作者:Tomas de Paulis、Kamondanai Hemstapat、Yelin Chen、Yongqin Zhang、Samir Saleh、David Alagille、Ronald M. Baldwin、Gilles D. Tamagnan、P. Jeffrey Conn
DOI:10.1021/jm051252j
日期:2006.6.1
CDPPB [3-cyano-N-(1,3-diphenyl-1H-pyrazol-5-yl) benzamide] was recently described as the first centrally active, positive allosteric modulator of rat and human metabotropic glutamate receptor (mGluR) mGluR(5) subtype. We explored the structural requirements for potentiation of glutamate-induced calcium release in naturally expressed mGluR5 in cultured rat astrocytes and increasing affinity for the allosteric antagonist binding site by evaluating 50 analogues of CDPPB. In the fluorometric calcium assay, CDPPB exhibited an EC50 value of 77 +/- 15 nM in potentiating mGluR(5)-mediated responses in cortical astrocytes and a K-i value of 3760 ( 430 nM in displacing [H-3] methoxyPEPy binding in membranes of cultured HEK-293 cells expressing rat mGluR5. The structure-activity relationships showed that electronegative aromatic substituents in the para-position of the benzamide moiety of CDPPB increase potency. Both binding and functional activities were further increased with a halogen atom in the ortho-position of the 1-phenyl ring. These effects of substitution do not match those of either aromatic ring of MPEP [2-methyl-6-(phenylethynyl)-pyridine] for the antagonist allosteric binding site. Combination of the optimal substituents and aromatic positions resulted in 4-nitro-N-(1-(2-fluorophenyl)-3-phenyl-1H-pyrazol-5-yl) benzamide (VU-1545) showing K-i) 156 (29 nM and EC50) 9.6 (1.9 nM in the binding and functional assays, respectively.
A convenient one-pot synthesis of 4-amino-3-arylpyrazoles from α-phthaloylaminoacetophenones
作者:Chen Chen、Keith Wilcoxen、James R. McCarthy
DOI:10.1016/s0040-4039(98)01776-6
日期:1998.11
Condensation of alpha-phthaloylaminoacetophenones 1a-c with N,N-dimethylformamide dimethyl acetal afforded the novel enamines 3a-c. Cyclization of 3 with hydrazine, alkylhydrazine or phenylhydrazine salts (4a-d) gave 4-phthaloylamino-3-arylpyrazoles 7-9 in high yields. Deprotection of 7-9 was accomplished with hydrazine to provide 4-amino-3-arylpyrazoles 5 in good yields. (C) 1998 Elsevier Science Ltd. All rights reserved.