7D36

Crystal Structure of BACE1 in complex with N-{3-[(3S)-1-amino-5-fluoro-3-methyl-3,4-dihydro-2,6-naphthyridin-3-yl]-4-fluorophenyl}-5-cyano-3-methylpyridine-2-carboxamide

Summary for 7D36

• Entry DOI: 10.2210/pdb7d36/pdb
• Descriptor: Beta-secretase 1, IODIDE ION, GLYCEROL, ... (5 entities in total)
• Functional Keywords: bace1, hydrolase
• Biological source: Homo sapiens (Human)
• Total number of polymer chains: 1
• Total formula weight: 47609.37

Authors

Nakahara, K.,Mitsuoka, Y.,Kasuya, S.,Yamamoto, T.,Yamamoto, S.,Ito, H.,Kido, Y.,Kusakabe, K.I. (deposition date: 2020-09-18, release date: 2021-07-28, Last modification date: 2024-11-13)

Primary citation

Nakahara, K.,Mitsuoka, Y.,Kasuya, S.,Yamamoto, T.,Yamamoto, S.,Ito, H.,Kido, Y.,Kusakabe, K.I.
Balancing potency and basicity by incorporating fluoropyridine moieties: Discovery of a 1-amino-3,4-dihydro-2,6-naphthyridine BACE1 inhibitor that affords robust and sustained central A beta reduction.
Eur.J.Med.Chem., 216:113270-113270, 2021

PubMed Abstract: β-Site amyloid precursor protein cleaving enzyme 1 (BACE1) has been pursued as a prime target for the treatment of Alzheimer's disease (AD). In this report, we describe the discovery of BACE1 inhibitors with a 1-amino-3,4-dihydro-2,6-naphthyridine scaffold. Leveraging known inhibitors 2a and 2b, we designed the naphthyridine-based compounds by removing a structurally labile moiety and incorporating pyridine rings, which showed increased biochemical and cellular potency, along with reduced basicity on the amidine moiety. Introduction of a fluorine atom on the pyridine culminated in compound 11 which had improved cellular activity as well as further reduced basicity and demonstrated a robust and sustained cerebrospinal fluid (CSF) Aβ reduction in dog. The crystal structure of compound 11 bound to BACE1 confirmed van der Waals interactions between the fluorine on the pyridine and Tyr71 in the flap.

PubMed: 33765486
DOI: 10.1016/j.ejmech.2021.113270

Experimental method

X-RAY DIFFRACTION (2.3 Å)