1282514-63-9Relevant academic research and scientific papers
Manufacture of the PI3K β-Sparing Inhibitor Taselisib. Part 1: Early-Stage Development Routes to the Bromobenzoxazepine Core
Remarchuk, Travis,Angelaud, Rémy,Askin, David,Kumar, Archana,Thompson, Andrew S.,Cheng, Hua,Reichwein, John F.,Chen, Yanping,St-Jean, Frédéric
, p. 775 - 782 (2019)
Two convergent regioselective routes for the synthesis of the tetracyclic imidazobenzoxazepine triazole 1, a key intermediate toward the synthesis of taselisib, are described. In the first-generation route, a chemoselective Negishi cross-coupling reaction was developed between iodoimidazole 3 and triazole 7, which enabled the delivery of initial kilogram quantities of 1. Because of the inefficiencies in the preparation of the imidazole 3, a second-generation route via a highly regioselective imidazole ring formation between α-chloroketone 11 and aryl amidine 12 was developed. The resulting imidazole 14 provided the handle to efficiently install the seven-membered benzoxazepine ring system in one pot with two-step N-alkylation and SNAr tandem reactions.
Discovery of 2-{3-[2-(1-isopropyl-3-methyl-1H-1,2-4-triazol-5-yl)-5,6- dihydrobenzo[f]imidazo[1,2- d ][1,4]oxazepin-9-yl]-1H-pyrazol-1-yl}-2- methylpropanamide (GDC-0032): A β-sparing phosphoinositide 3-kinase inhibitor with high unbound exposure and robust in vivo antitumor activity
Ndubaku, Chudi O.,Heffron, Timothy P.,Staben, Steven T.,Baumgardner, Matthew,Blaquiere, Nicole,Bradley, Erin,Bull, Richard,Do, Steven,Dotson, Jennafer,Dudley, Danette,Edgar, Kyle A.,Friedman, Lori S.,Goldsmith, Richard,Heald, Robert A.,Kolesnikov, Aleksandr,Lee, Leslie,Lewis, Cristina,Nannini, Michelle,Nonomiya, Jim,Pang, Jodie,Price, Steve,Prior, Wei Wei,Salphati, Laurent,Sideris, Steve,Wallin, Jeffery J.,Wang, Lan,Wei, Binqing,Sampath, Deepak,Olivero, Alan G.
, p. 4597 - 4610 (2013/07/19)
Dysfunctional signaling through the phosphoinositide 3-kinase (PI3K)/AKT/mTOR pathway leads to uncontrolled tumor proliferation. In the course of the discovery of novel benzoxepin PI3K inhibitors, we observed a strong dependency of in vivo antitumor activity on the free-drug exposure. By lowering the intrinsic clearance, we derived a set of imidazobenzoxazepin compounds that showed improved unbound drug exposure and effectively suppressed growth of tumors in a mouse xenograft model at low drug dose levels. One of these compounds, GDC-0032 (11l), was progressed to clinical trials and is currently under phase I evaluation as a potential treatment for human malignancies.
BENZOXAZEPIN COMPOUNDS SELECTIVE FOR PI3K P110 DELTA AND METHODS OF USE
-
, (2012/10/08)
Benzoxazepin Formula I compounds, including stereoisomers, geometric isomers, tautomers, metabolites and pharmaceutically acceptable salts thereof, are useful for inhibiting the delta isoform of PI3K, and for treating disorders mediated by lipid kinases such as inflammation, immunological disorders, and cancer. Methods of using compounds of Formula I for in vitro, in situ, and in vivo diagnosis, prevention or treatment of such disorders in mammalian cells, or associated pathological conditions, are disclosed.
