5T1U image
Entry Detail
PDB ID:
5T1U
Title:
Aminomethyl-Derived Beta Secretase (BACE1) Inhibitors: Engaging Gly230 without an Anilide Functionality
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2016-08-22
Release Date:
2017-01-11
Method Details:
Experimental Method:
Resolution:
1.78 Å
R-Value Free:
0.20
R-Value Work:
0.18
R-Value Observed:
0.18
Space Group:
P 61 2 2
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Beta-secretase 1
Chain IDs:A
Chain Length:415
Number of Molecules:1
Biological Source:Homo sapiens
Primary Citation
Aminomethyl-Derived Beta Secretase (BACE1) Inhibitors: Engaging Gly230 without an Anilide Functionality.
J. Med. Chem. 60 386 402 (2017)
PMID: 27997172 DOI: 10.1021/acs.jmedchem.6b01451

Abstact

A growing subset of β-secretase (BACE1) inhibitors for the treatment of Alzheimer's disease (AD) utilizes an anilide chemotype that engages a key residue (Gly230) in the BACE1 binding site. Although the anilide moiety affords excellent potency, it simultaneously introduces a third hydrogen bond donor that limits brain availability and provides a potential metabolic site leading to the formation of an aniline, a structural motif of prospective safety concern. We report herein an alternative aminomethyl linker that delivers similar potency and improved brain penetration relative to the amide moiety. Optimization of this series identified analogues with an excellent balance of ADME properties and potency; however, potential drug-drug interactions (DDI) were predicted based on CYP 2D6 affinities. Generation and analysis of key BACE1 and CYP 2D6 crystal structures identified strategies to obviate the DDI liability, leading to compound 16, which exhibits robust in vivo efficacy as a BACE1 inhibitor.

Legend

Protein

Chemical

Disease

Primary Citation of related structures