By use of iterative design aided by predictive models for target affinity, brain permeability, and hERG activity, novel and diverse compounds based on cyclic amidine and guanidine cores were synthesized with the goal of finding BACE-1 inhibitors as a treatment for Alzheimer's disease. Since synthesis feasibility had low priority in the design of the cores, an extensive synthesis effort was needed to make the relevant compounds. Syntheses of these compounds are reported, together with physicochemical properties and structure-activity relationships based on in vitro data. Four crystal structures of diverse amidines binding in the active site are deposited and discussed. Inhibitors of BACE-1 with 3 mu M to 32 nM potencies in cells are shown, together with data on in vivo brain exposure levels for four compounds. The results presented show the importance of the core structure for the profile of the final compounds.
Synthesis and some pharmacological properties of [1-deamino-9-thioglycine]oxytocin
作者:Warren C. Jones、John J. Nestor、Vincent. Du Vigneaud
DOI:10.1021/ja00798a037
日期:1973.8
Thiophosphate – A Versatile Prebiotic Reagent?
作者:Dougal Ritson、John Sutherland、Jiangfeng Xu
DOI:10.1055/s-0036-1589414
日期:——
Described are our preliminary studies on the reactivity of thiophosphate in a setting which correlates with the cyanosulfidic systems chemistry we have previously reported. Thiophosphate adds to various nitrile groups giving the corresponding thioamides in a highly efficient manner and the mechanistic implications are briefly discussed. Thiophosphate can also act as a phosphorylating agent, which was
Synthesis of new fused heterocyclic aromatic hydrocarbons via C–S and C–C bond formation by C–H bond activation in the presence of new Pd(<scp>ii</scp>) Schiff's base complexes
作者:Someshwar Pola、Yadagiri Bhongiri、Ramchander Jadhav、Prabhakar Ch、Venkanna G.
DOI:10.1039/c6ra15609f
日期:——
1H-NMR, DFT and TDDFT methods. C–H bond activation was confirmed by sequential reactions and the data were supported by a one-pot synthesis product. Optimization of the intensity of visible light of the photocatalytic reactions. Finally, the sp2-H bond activation via the formation of the C–S and intramolecular C–C bonds in the presence of both the complexes were performed under visible light irradiation