ISDA

Entry Detail

PDB ID:

4TPM

Keywords:

Hydrolase/Hydrolase Inhibitor

Title:

Crystal structure of 2-(3-alkoxy-1-azetidinyl) quinolines as PDE10A Inhibitors

Biological Source:

Source Organism:

Homo sapiens

Host Organism:

Escherichia coli

PDB Version:

Deposition Date:

2014-06-08

Release Date:

2014-12-17

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.77 Å

R-Value Free:

0.17

R-Value Work:

0.15

R-Value Observed:

0.15

Space Group:

F 2 3

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description:cAMP and cAMP-inhibited cGMP 3',5'-cyclic phosphodiesterase 10A
Chain IDs:A, B
Chain Length:351
Number of Molecules:2
Biological Source:Homo sapiens

UniProt ID:Q9Y233 EC:3.1.4.17

Ligand Molecules

35E

GOL

SO4

Primary Citation

Synthesis and preliminary biological evaluation of potent and selective 2-(3-alkoxy-1-azetidinyl) quinolines as novel PDE10A inhibitors with improved solubility.

Rzasa, R.M, Frohn, M.J, Andrews, K.L, Chmait, S, Chen, N, Clarine, J.G, Davis, C, Eastwood, H.A, Horne, D.B, Hu, E, Jones, A.D, Kaller, M.R, Kunz, R.K, Miller, S, Monenschein, H, Nguyen, T, Pickrell, A.J, Porter, A, Reichelt, A, Zhao, X, Treanor, J.J, Allen, J.R.Show

Bioorg.Med.Chem. 22 6570 6585 (2014)

PMID: 25456383 DOI: 10.1016/j.bmc.2014.10.013

Abstact

We report the discovery of a novel series of 2-(3-alkoxy-1-azetidinyl) quinolines as potent and selective PDE10A inhibitors. Structure-activity studies improved the solubility (pH 7.4) and maintained high PDE10A activity compared to initial lead compound 3, with select compounds demonstrating good oral bioavailability. X-ray crystallographic studies revealed two distinct binding modes to the catalytic site of the PDE10A enzyme. An ex vivo receptor occupancy assay in rats demonstrated that this series of compounds covered the target within the striatum.

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