CPPHA - CAS 693288-97-0
Catalog number: 693288-97-0
Category: Inhibitor
Not Intended for Therapeutic Use. For research use only.
Molecular Formula:
C22H15ClN2O4
Molecular Weight:
406.82
COA:
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Targets:
mGluR
Description:
CPPHA is a selective positive allosteric modulator of mGluR5 receptor. It is thought to act at a novel allosteric site and potentiates mGlu5 responses by a mechanism distinct from that of VU 29.
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Purity:
>98%
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1.Challenges in the development of mGluR5 positive allosteric modulators: the discovery of CPPHA.
Zhao Z1, Wisnoski DD, O'Brien JA, Lemaire W, Williams DL Jr, Jacobson MA, Wittman M, Ha SN, Schaffhauser H, Sur C, Pettibone DJ, Duggan ME, Conn PJ, Hartman GD, Lindsley CW. Bioorg Med Chem Lett. 2007 Mar 1;17(5):1386-91. Epub 2006 Dec 3.
This Letter describes, for the first time, the synthesis and SAR, developed through an iterative analog library approach, that led to the discovery of the positive allosteric modulator (PAM) of the metabotropic glutamate receptor mGluR5 CPPHA. Binding to a unique allosteric binding site distinct from other mGluR5 PAMs, CPPHA has been the focus of numerous pharmacology studies by several laboratories.
2.N-{4-Chloro-2-[(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)methyl]phenyl}-2-hydroxybenzamide (CPPHA) acts through a novel site as a positive allosteric modulator of group 1 metabotropic glutamate receptors.
Chen Y1, Goudet C, Pin JP, Conn PJ. Mol Pharmacol. 2008 Mar;73(3):909-18. Epub 2007 Dec 4.
Recent studies suggest that a novel positive allosteric modulator (PAM) of the metabotropic glutamate receptor (mGluRs), mGluR5, termed 4-nitro-N-(1,3-diphenyl-1H-pyrazol-5-yl)benzamide (VU-29), potentiates mGluR5 responses by actions at a site that is overlapping with the binding site of 2-methyl-6-(phenylethynyl)pyridine (MPEP), a previously identified negative allosteric modulator of this receptor. It is interesting that a structurally distinct PAM, N-{4-Chloro-2-[(1,3-dioxo-1,3-dihydro-2H-isoindol-2-yl)methyl]phenyl}-2-hydroxybenzamide (CPPHA), does not to bind to the MPEP site. We now report that CPPHA potentiates mGluR5 responses by a mechanism that is distinct from that of VU-29. VU-29- and CPPHA-induced potentiation of mGluR5 responses are blocked by a neutral ligand at the MPEP allosteric site termed 5-methyl-2-(phenylethynyl)pyridine (5MPEP). However, increasing concentrations of 5MPEP induce parallel rightward shifts in the VU-29 concentration-response curve, whereas 5MPEP inhibits CPPHA potentiation in a noncompetitive manner.
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CAS 693288-97-0 CPPHA

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