1157239-31-0Relevant academic research and scientific papers
Asymmetric Reductive Amination of Ketones Catalyzed by Imine Reductases
Wetzl, Dennis,Gand, Martin,Ross, Alfred,Müller, Hubertus,Matzel, Philipp,Hanlon, Steven P.,Müller, Michael,Wirz, Beat,H?hne, Matthias,Iding, Hans
, p. 2023 - 2026 (2016)
Biocatalysis employing imine reductases is a promising approach for the one-step generation of chiral amines from ketones. The enzymes reported for this process suffer from low activity and moderate stereoselectivity. We identified a set of enzymes that facilitate this reaction with high to quantitative conversions from a library of 28 imine reductases. This enabled the conversion of ketones with ammonia, methylamine, or butylamine into the corresponding amines. Most importantly, we performed preparative (>100 mg) scale syntheses of amines such as (1S,3R)-N,3-dimethylcyclohexylamine and (R)-N-methyl-2-aminohexane with excellent stereochemical purities (98 % de, 96 % ee) in good yields.
Discovery of CP-690,550: A potent and selective janus kinase (JAK) inhibitor for the treatment of autoimmune diseases and organ transplant rejection
Flanagan, Mark E.,Blumenkopf, Todd A.,Brissette, William H.,Brown, Matthew F.,Casavant, Jeffrey M.,Shang-Poa, Chang,Doty, Jonathan L.,Elliott, Eileen A.,Fisher, Michael B.,Hines, Michael,Kent, Craig,Kudlacz, Elizabeth M.,Lillie, Brett M.,Magnuson, Kelly S.,McCurdy, Sandra P.,Munchhof, Michael J.,Perry, Bret D.,Sawyer, Perry S.,Strelevitz, Timothy J.,Subramanyam, Chakrapani,Sun, Jianmin,Whipple, David A.,Changelian, Paul S.
experimental part, p. 8468 - 8484 (2011/02/26)
There is a critical need for safer and more convenient treatments for organ transplant rejection and autoimmune disorders such as rheumatoid arthritis. Janus tyrosine kinases (JAK1, JAK3) are expressed in lymphoid cells and are involved in the signaling of multiple cytokines important for various T cell functions. Blockade of the JAK1/JAK3-STAT pathway with a small molecule was anticipated to provide therapeutic immunosuppression/immunomodulation. The Pfizer compound library was screened against the catalytic domain of JAK3 resulting in the identification of a pyrrolopyrimidine-based series of inhibitors represented by CP-352,664 (2a). Synthetic analogues of 2a were screened against the JAK enzymes and evaluated in an IL-2 induced T cell blast proliferation assay. Select compounds were evaluated in rodent efficacy models of allograft rejection and destructive inflammatory arthritis. Optimization within this chemical series led to identification of CP-690,550 1, a potential first-in-class JAK inhibitor for treatment of autoimmune diseases and organ transplant rejection.
