The regiochemistry of the radical addition of N-chloroamides to enol ethers
作者:Gilles Caron、Jean Lessard
DOI:10.1016/s0040-4020(01)88026-1
日期:1993.9
The orientation of the radical addition of N-chloroamides (ZCONHCl) to enolethers was studied as a function of Z and the enolether structure and compared with the orientation of radical addition of thioacetic acid and the orientation of typical electrophilicadditions.
The present invention provides compounds of formula I:
1
or a pharmaceutically acceptable derivative thereof, wherein X is oxygen or sulfur; Y is —S—, —O—, or —NR
1
—; and R
2
, R
3
, and R
4
are as described in the specification. These compounds are inhibitors of protein kinase, particularly inhibitors of GSK-3 mammalian protein kinase. The invention also provides pharmaceutical compositions comprising the inhibitors of the invention and methods of utilizing those compositions in the treatment and prevention of various disorders, such as diabetes and Alzheimer's disease.
An efficient synthesis of 6-formyl-1,2-dihydro-2-oxo-3-pyridinecarboxylic acid and some carbonyl derivatives of it and its 6-acetyl homologue
作者:Joseph P. Sanchez、Thomas F. Mich、Gin G. Huang
DOI:10.1002/jhet.5570310207
日期:1994.3
a highly efficient, 4-step synthesis. This compound, along with its one carbon homologue, 6-acetyl-1,2-dihydro-2-oxo-3-pyridinecarboxylic acid (5b) has been reacted with several carbonyl derivative forming reagents to provide a series of sidechains for β-lactams. Among these carbonyl derivatives are styrylamides which were prepared from Wittig and Horner-Emmons reagents. The preparation of the phosphonium
large-scale reactions, synthesis of 15N-labeled arylamides, and applicability toward biologically relevant compounds. On the basis of mechanistic investigations, two distinctive photoexcitations are proposed to function in the current process, in which the first excitation involving chloro-boron adduct facilitates the transition-metal-free activation of dioxazolones by single electrontransfer (SET), and
Process for preparing halo triazolo benzodiazepine
申请人:The Upjohn Company
公开号:US03991070A1
公开(公告)日:1976-11-09
Preparing 1-halo-6-phenyl-4H-s-triazolo[4,3-a][1,4]benzodiazepines by reacting an N-halosuccinimide with a 2-[3-(phthalimidomethyl)triazolyl]benzophenone to form the 2-[5-halo-3-(phthalimidomethyl)triazolyl] benzophenone and reacting the 2-[5-halo-3-(phthalimidomethyl)triazol-4-yl]benzophenone with hydrazine or a primary amine in an organic liquid solvent medium at 25.degree. to 100.degree. C. The products of the process have CNS tranquilizer and sedative properties but are also of interest for use as intermediates to prepare 2,4-dihydro-6-phenyl-1H-s-triazolo[4,3-a] [1,4]benzodiazepin-1-ones which are of clinical interest for their CNS tranquilizer, sedative and anti-depressant drug use properties in mammalian animals including humans.