New pyrimidine or pyridine based compounds, compositions and methods of inhibiting the activity of glycogen synthase kinase (GSK3) in vitro and of treatment of GSK3 mediated disorders in vivo are provided. The methods, compounds and compositions of the invention may be employed alone, or in combination with other pharmacologically active agents in the treatment of disorders mediated by GSK3 activity, such as diabetes, Alzheimer's disease and other neurodegenerative disorders, obesity, atherosclerotic cardiovascular disease, essential hypertension, polycystic ovary syndrome, syndrome X, ischemia, traumatic brain injury, bipolar disorder, immunodeficiency or cancer.
Investigation of the reaction of α-thioamides, α-esters and α-nitriles with N-halosuccinimides
作者:Marie Kissane、Maureen Murphy、Denis Lynch、Alan Ford、Anita R. Maguire
DOI:10.1016/j.tet.2008.05.026
日期:2008.8
Investigation of the reaction of α-thioamides, α-esters and α-nitriles with NBS and NCS is described. The scope of this stereoselective oxidative transformation to the β-haloacrylamides, β-acrylates and β-acrylonitriles has been determined. A mechanistic rationale to explain the observed differences in reactivity between the amide, ester and nitrile series is proposed.
Additions of imine to Michael acceptors and are both highly selective processes. The observed stereocontrol of the newly created asymmetric centers in the resulting adducts strongly supportscyclic-liketransition states.
Catalytic asymmetric Diels–Alder reactions of α-thioacrylates for the preparation of norbornenone
作者:Varinder K. Aggarwal、Emma S. Anderson、D. Elfyn Jones、Kerstin B. Obierey、Robert Giles
DOI:10.1039/a805366i
日期:——
CuIIâbisoxazoline complexes catalyse the asymmetric DielsâAlder cycloaddition of α-thioacrylates with cyclopentadiene to give the cycloadducts in up to 92% yield, 88% de and >95% ee for the endo product; deprotection gives good yields of (1S,4S)-norbornenone with high enantioselectivity.