6PYU

Human PI3Kdelta in complex with Compound 4-2 ((3S)-1'-(cyclopropanecarbonyl)-5-(quinoxalin-6-yl)spiro[indole-3,2'-pyrrolidin]-2(1H)-one)

Summary for 6PYU

• Entry DOI: 10.2210/pdb6pyu/pdb
• Descriptor: Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit delta isoform, Phosphatidylinositol 3-kinase regulatory subunit alpha, (3S)-1'-(cyclopropanecarbonyl)-5-(quinoxalin-6-yl)spiro[indole-3,2'-pyrrolidin]-2(1H)-one, ... (4 entities in total)
• Functional Keywords: pi3kdelta kinase, transferase, transferase-transferase inhibitor complex, transferase/transferase inhibitor
• Biological source: Homo sapiens (Human); More
• Total number of polymer chains: 2
• Total formula weight: 137864.62

Authors

Lesburg, C.A.,Augustin, M.A. (deposition date: 2019-07-30, release date: 2019-08-28, Last modification date: 2024-03-13)

Primary citation

Fradera, X.,Methot, J.L.,Achab, A.,Christopher, M.,Altman, M.D.,Zhou, H.,McGowan, M.A.,Kattar, S.D.,Wilson, K.,Garcia, Y.,Augustin, M.A.,Lesburg, C.A.,Shah, S.,Goldenblatt, P.,Katz, J.D.
Design of selective PI3K delta inhibitors using an iterative scaffold-hopping workflow.
Bioorg.Med.Chem.Lett., 29:2575-2580, 2019

PubMed Abstract: PI3Kδ mediates key immune cell signaling pathways and is a target of interest for multiple indications in immunology and oncology. Here we report a structure-based scaffold-hopping strategy for the design of chemically diverse PI3Kδ inhibitors. Using this strategy, we identified several scaffolds that can be combined to generate new PI3Kδ inhibitors with high potency and isoform selectivity. In particular, an oxindole-based scaffold was found to impart exquisite selectivity when combined with several hinge binding motifs.

PubMed: 31416665
DOI: 10.1016/j.bmcl.2019.08.004

Experimental method

X-RAY DIFFRACTION (2.54 Å)