1-Substituted Cyclopentylamines from Nitriles and Tetramethylenebismagnesium Dibromide in the Presence of Ti(O<i>i</i>Pr)<sub>4</sub>
作者:Olesya A. Tomashenko、Andrei E. Rudenko、Viktor V. Sokolov、Alexander A. Tomashevskiy、Armin de Meijere
DOI:10.1002/ejoc.200900817
日期:2010.3
Various 1-substitutedcyclopentylamines (25 examples, 10― 89 % yield) have been prepared according to a one-pot procedure by the addition of tetramethylenebismagnesiumdibromide in the presence of Ti(OiPr) 4 to aliphatic, aromatic and heteroaromatic nitriles, respectively.
Competing pathways in the phototransposition of pyrazoles
作者:John A. Barltrop、A. Colin Day、Arthur G. Mack、Aziz Shahrisa、Shigeru Wakamatsu
DOI:10.1039/c39810000604
日期:——
Cyano-substituted pyrazoles transpose photo-chemically into imidazoles by two concurrent paths: (a) 1,5-interchange, probably by 2,5-bonding to a diazabicyclopentene which isomerises by nitrogen ‘walk’ before rearomatisation, and (b) 2,3-interchange, probably via an intermediate azirine; in sharp contrast, 1,5-dimethyl-3-trifluoromethylpyrazole phototransposes exclusively by the former path.
Indazole compounds and pharmaceutical compositions for inhibiting protein kinases, and methods for their use
申请人:Borchardt J. Allen
公开号:US20060160858A1
公开(公告)日:2006-07-20
Indazole compounds that modulate and/or inhibit the ophthalmic diseases and the activity of certain protein kinases are described. These compounds and pharmaceutical compositions containing them are capable of mediating tyrosine kinase signal transduction and thereby modulate and/or inhibit unwanted cell proliferation. The invention is also directed to the therapeutic or prophylactic use of pharmaceutical compositions containing such compounds, and to methods of treating ophthalmic diseases and cancer and other disease states associated with unwanted angiogenesis and/or cellular proliferation, such as diabetic retinopathy, neovascular glaucoma, rheumatoid arthritis, and psoriasis, by administering effective amounts of such compounds.
Inhibitors Of Hepatitis C Virus Protease, And Compositions And Treatments Using The Same
申请人:Collins Raymond Michael
公开号:US20070249637A1
公开(公告)日:2007-10-25
The present invention provides compounds of formula (I), (II) or (IV), or pharmaceutically acceptable salts and solvates thereof, which are useful as inhibitors of the Hepatitis C virus (HCV) protease enzyme and are also useful for the treatment of HCV infections in HCV-infected mammals, including humans. The present invention also provides pharmaceutical compositions comprising compounds of formula (I), (II) or (IV), their pharmaceutically acceptable salts and solvates. Furthermore, the present invention provides intermediate compounds and methods useful in the preparation of compounds of formulas (I), (II) and (IV).
作者:Georgyi Koidan、Serhii Zahorulko、Anastasiia Hurieva、Svitlana Shishkina、Eduard B. Rusanov、Aleksandr Kostyuk
DOI:10.1002/ejoc.202400479
日期:2024.8.26
N-Alkyl(aryl)pyrazoles react with silylformamidine that exists in an equilibrium with its carbene form via migration of the trimethylsilyl group from the carbon to nitrogen atom inserting at C−H group in 5th position. N-Alkyl(aryl)pyrazoles featuring substituents such as Br, CN and NO2 readily afford the corresponding aminals.