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molecules of the month

NVP-CLR457

oral pan-class IA PI3K inhibitor

Ph. I in advanced solid tumors

opt. from previous clinical candidat

J. Med. Chem

Novartis (NIBR), Basel, CH

NVP-CLR457 Chemical Structure, oral pan-class IA PI3K inhibitor - Novartis (NIBR), Basel, CH
6 mins read

Context. NVP-CLR457 (Novartis Institutes for BioMedical Research) is an oral, non-CNS-penetrating pan-class IA phosphoinositide 3-kinase (PI3K) inhibitor. Due to the key involvement of PI3K in the famed PI3K-Akt−mTOR pathway, whose deregulation has been observed in several cancers, it is no surprise that the last decade has seen over 600 medicinal chemistry-based publications and patents focusing on inhibitors targeting at least one of the 4 class I PI3K isoforms (α, β, δ, and γ). Consequently, over 30 anti-PI3K clinical candidates have been developed during this time, culminating in the approval of 5 isoform-selective agents: idelalisib (PI3Kδ), copanlisib (PI3Kα/δ), duvelisib (PI3Kδ/γ), alpelisib (PI3Kα), and the recently withdrawn umbralisib (PI3Kδ, CK1ε). This is a great teaching example for medicinal chemistry as the authors…


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