6ZBA image
Deposition Date 2020-06-08
Release Date 2020-09-23
Last Version Date 2024-01-24
Entry Detail
PDB ID:
6ZBA
Keywords:
Title:
Crystal structure of PDE4D2 in complex with inhibitor LEO39652
Biological Source:
Source Organism:
Homo sapiens (Taxon ID: 9606)
Host Organism:
Method Details:
Experimental Method:
Resolution:
1.60 Å
R-Value Free:
0.19
R-Value Work:
0.16
Space Group:
P 21 21 21
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:cAMP-specific 3',5'-cyclic phosphodiesterase 4D
Gene (Uniprot):PDE4D
Chain IDs:A (auth: AAA), B (auth: BBB), C (auth: CCC), D (auth: DDD)
Chain Length:360
Number of Molecules:4
Biological Source:Homo sapiens
Primary Citation
Discovery and Early Clinical Development of Isobutyl 1-[8-Methoxy-5-(1-oxo-3 H -isobenzofuran-5-yl)-[1,2,4]triazolo[1,5- a ]pyridin-2-yl]cyclopropanecarboxylate (LEO 39652), a Novel "Dual-Soft" PDE4 Inhibitor for Topical Treatment of Atopic Dermatitis.
J.Med.Chem. 63 14502 14521 (2020)
PMID: 33054196 DOI: 10.1021/acs.jmedchem.0c00797

Abstact

We describe the design of a novel PDE4 scaffold and the exploration of the dual-soft concept to reduce systemic side effects via rapid elimination: introducing ester functionalities that can be inactivated in blood as well as by the liver (dual-soft) while being stable in human skin. Compound 40 was selected as a clinical candidate as it was potent and rapidly degraded by blood and liver to inactive metabolites and because in preclinical studies it showed high exposure at the target organ: the skin. Preclinical and clinical data are presented confirming the value of the dual-soft concept in reducing systemic exposure.

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