955979-22-3Relevant articles and documents
Bismuth Acetate as a Catalyst for the Sequential Protodeboronation of Di- and Triborylated Indoles
Shen, Fangyi,Tyagarajan, Sriram,Perera, Damith,Krska, Shane W.,Maligres, Peter E.,Smith, Milton R.,Maleczka, Robert E.
, p. 1554 - 1557 (2016)
Bismuth(III) acetate is a safe, inexpensive, and selective facilitator of sequential protodeboronations, which when used in conjunction with Ir-catalyzed borylations allows access to a diversity of borylated indoles. The versatility of combining Ir-catalyzed borylations with Bi(III)-catalyzed protodeboronation is demonstrated by selectively converting 6-fluoroindole into products with Bpin groups at the 4-, 5-, 7-, 2,7-, 4,7-, 3,5-, and 2,4,7-positions and the late-stage functionalization of sumatriptan.
Discovery of novel PI3-Kinase δ specific inhibitors for the treatment of rheumatoid arthritis: Taming CYP3A4 time-dependent inhibition
Safina, Brian S.,Baker, Stewart,Baumgardner, Matt,Blaney, Paul M.,Chan, Bryan K.,Chen, Yung-Hsiang,Cartwright, Matthew W.,Castanedo, Georgette,Chabot, Christine,Cheguillaume, Arnaud J.,Goldsmith, Paul,Goldstein, David M.,Goyal, Bindu,Hancox, Timothy,Handa, Raj K.,Iyer, Pravin S,Kaur, Jasmit,Kondru, Rama,Kenny, Jane R.,Krintel, Sussie L.,Li, Jun,Lesnick, John,Lucas, Matthew C.,Lewis, Cristina,Mukadam, Sophie,Murray, Jeremy,Nadin, Alan J.,Nonomiya, Jim,Padilla, Fernando,Palmer, Wylie S.,Pang, Jodie,Pegg, Neil,Price, Steve,Reif, Karin,Salphati, Laurent,Savy, Pascal A.,Seward, Eileen M.,Shuttleworth, Stephen,Sohal, Sukhjit,Sweeney, Zachary K.,Tay, Suzanne,Tivitmahaisoon, Parcharee,Waszkowycz, Bohdan,Wei, Binqing,Yue, Qin,Zhang, Chenghong,Sutherlin, Daniel P.
supporting information; experimental part, p. 5887 - 5900 (2012/08/07)
PI3Kδis a lipid kinase and a member of a larger family of enzymes, PI3K class IA(α, β, δ) and IB (γ), which catalyze the phosphorylation of PIP2 to PIP3. PI3Kδ is mainly expressed in leukocytes, where it plays a critical, nonredundant role in B cell receptor mediated signaling and provides an attractive opportunity to treat diseases where B cell activity is essential, e.g., rheumatoid arthritis. We report the discovery of novel, potent, and selective PI3Kδinhibitors and describe a structural hypothesis for isoform (α, β γ?) selectivity gained from interactions in the affinity pocket. The critical component of our initial pharmacophore for isoform selectivity was strongly associated with CYP3A4 time-dependent inhibition (TDI). We describe a variety of strategies and methods for monitoring and attenuating TDI. Ultimately, a structure-based design approach was employed to identify a suitable structural replacement for further optimization.
