Discovery of a Novel Inhaled PI3Kδ Inhibitor for the Treatment of Respiratory Diseases.

Abstract:

:Oral PI3Kδ inhibitors such as Idelalisib and Duvelisib have shown efficacy as anticancer agents and Idelalisib has been approved for the treatment of three B-cell cancers. However, Idelalisib has a black box warning on its product label regarding the risks of fatal and serious toxicities including hepatic toxicity, severe diarrhea, colitis, pneumonitis, infections, and intestinal perforation. Some of these side effects are mechanism-related and could hinder the development of Idelalisib for less severe conditions. For respiratory diseases, compounds administered by inhalation are delivered directly to the site of action and may improve the therapeutic index of a drug, minimizing undesired side effects. This work describes the discovery and optimization of inhaled PI3Kδ inhibitors intended for the treatment of severe asthma and COPD. Once the potency was in the desired range, efforts were focused on identifying the particular physicochemical properties that could translate into better lung retention. This medicinal chemistry exercise led to the identification of LAS195319 as a candidate for clinical development.

journal_name

J Med Chem

authors

Erra M,Taltavull J,Bernal FJ,Caturla JF,Carrascal M,Pagès L,Mir M,Espinosa S,Gràcia J,Domínguez M,Sabaté M,Paris S,Maldonado M,Hernández B,Bravo M,Calama E,Miralpeix M,Lehner MD,Calbet M

doi

10.1021/acs.jmedchem.8b00873

subject

Has Abstract

pub_date

2018-11-08 00:00:00

pages

9551-9567

issue

21

eissn

0022-2623

issn

1520-4804

journal_volume

61

pub_type

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