7N3L image
Entry Detail
PDB ID:
7N3L
Title:
Co-complex CYP46A1 with 0420 (compound 6)
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2021-06-01
Release Date:
2022-02-23
Method Details:
Experimental Method:
Resolution:
1.63 Å
R-Value Free:
0.20
R-Value Work:
0.16
Space Group:
P 21 21 21
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Cholesterol 24-hydroxylase
Chain IDs:A
Chain Length:474
Number of Molecules:1
Biological Source:Homo sapiens
Primary Citation
Discovery of Novel 3-Piperidinyl Pyridine Derivatives as Highly Potent and Selective Cholesterol 24-Hydroxylase (CH24H) Inhibitors.
J.Med.Chem. 65 3343 3358 (2022)
PMID: 35166541 DOI: 10.1021/acs.jmedchem.1c01898

Abstact

Cholesterol 24-hydroxylase (CH24H or CYP46A1) is a brain-specific cytochrome P450 enzyme that metabolizes cholesterol into 24S-hydroxycholesterol (24HC) for regulating brain cholesterol homeostasis. For the development of a novel and potent CH24H inhibitor, we designed and synthesized 3,4-disubstituted pyridine derivatives using a structure-based drug design approach starting from compounds 1 (soticlestat) and 2 (thioperamide). Optimization of this series by focusing on ligand-lipophilicity efficiency value resulted in the discovery of 4-(4-methyl-1-pyrazolyl)pyridine derivative 17 (IC50 = 8.5 nM) as a potent and highly selective CH24H inhibitor. The X-ray crystal structure of CH24H in complex with compound 17 revealed a unique binding mode. Both blood-brain barrier penetration and reduction of 24HC levels (26% reduction) in the mouse brain were confirmed by oral administration of 17 at 30 mg/kg, indicating that 17 is a promising tool for the novel and selective inhibition of CH24H.

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