5O83

Discovery of CDZ173 (leniolisib), Representing a Structurally Novel Class of PI3K Delta-Selective Inhibitors


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.230 
  • R-Value Observed: 0.233 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Discovery of CDZ173 (Leniolisib), Representing a Structurally Novel Class of PI3K Delta-Selective Inhibitors.

Hoegenauer, K.Soldermann, N.Zecri, F.Strang, R.S.Graveleau, N.Wolf, R.M.Cooke, N.G.Smith, A.B.Hollingworth, G.J.Blanz, J.Gutmann, S.Rummel, G.Littlewood-Evans, A.Burkhart, C.

(2017) ACS Med Chem Lett 8: 975-980

  • DOI: 10.1021/acsmedchemlett.7b00293
  • Primary Citation of Related Structures:  
    5O83

  • PubMed Abstract: 
  • The predominant expression of phosphoinositide 3-kinase δ (PI3Kδ) in leukocytes and its critical role in B and T cell functions led to the hypothesis that selective inhibitors of this isoform would have potential as therapeutics for the treatment of allergic and inflammatory disease ...

    The predominant expression of phosphoinositide 3-kinase δ (PI3Kδ) in leukocytes and its critical role in B and T cell functions led to the hypothesis that selective inhibitors of this isoform would have potential as therapeutics for the treatment of allergic and inflammatory disease. Targeting specifically PI3Kδ should avoid potential side effects associated with the ubiquitously expressed PI3Kα and β isoforms. We disclose how morphing the heterocyclic core of previously discovered 4,6-diaryl quinazolines to a significantly less lipophilic 5,6,7,8-tetrahydropyrido[4,3- d ]pyrimidine, followed by replacement of one of the phenyl groups with a pyrrolidine-3-amine, led to a compound series with an optimal on-target profile and good ADME properties. A final lipophilicity adjustment led to the discovery of CDZ173 (leniolisib), a potent PI3Kδ selective inhibitor with suitable properties and efficacy for clinical development as an anti-inflammatory therapeutic. In vitro , CDZ173 inhibits a large spectrum of immune cell functions, as demonstrated in B and T cells, neutrophils, monocytes, basophils, plasmocytoid dendritic cells, and mast cells. In vivo , CDZ173 inhibits B cell activation in rats and monkeys in a concentration- and time-dependent manner. After prophylactic or therapeutic dosing, CDZ173 potently inhibited antigen-specific antibody production and reduced disease symptoms in a rat collagen-induced arthritis model. Structurally, CDZ173 differs significantly from the first generation of PI3Kδ and PI3Kγδ-selective clinical compounds. Therefore, CDZ173 could differentiate by a more favorable safety profile. CDZ173 is currently in clinical studies in patients suffering from primary Sjögren's syndrome and in APDS/PASLI, a disease caused by gain-of-function mutations of PI3Kδ.


    Organizational Affiliation

    Global Discovery Chemistry, PK Sciences, Chemical Biology and Therapeutics, and Autoimmunity, Transplantation and Inflammation, Novartis Institutes for BioMedical Research, Novartis Campus, CH-4002 Basel, Switzerland.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit delta isoformA941Mus musculusMutation(s): 0 
Gene Names: Pik3cd
EC: 2.7.1.153
UniProt
Find proteins for O35904 (Mus musculus)
Explore O35904 
Go to UniProtKB:  O35904
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
9NQ
Query on 9NQ

Download Ideal Coordinates CCD File 
B [auth A]Leniolisib
C21 H25 F3 N6 O2
MWKYMZXCGYXLPL-ZDUSSCGKSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.230 
  • R-Value Observed: 0.233 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 142.12α = 90
b = 63.99β = 102.89
c = 116.54γ = 90
Software Package:
Software NamePurpose
BUSTERrefinement
XDSdata reduction
XSCALEdata scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2017-09-20
    Type: Initial release
  • Version 1.1: 2017-10-11
    Changes: Database references
  • Version 1.2: 2019-10-16
    Changes: Data collection