The present invention relates generally to selected fused pyrrolocarbazoles, including pharmaceutical compositions thereof and methods of treating diseases therewith. The present invention is also directed to intermediates and processes for making these fused pyrrolocarbazoles.
2,3-Dihydro-1,4-dioxin in Organic Chemistry; Part II.<sup>1</sup>Palladium-Catalyzed Acylations of 5-Tributylstannyl-2,3-dihydro-1,4-dioxin: Preparation of 5-Acyl-2,3-dihydro-1,4-dioxins
作者:Valérie Blanchot、Marcel Fétizon、Issam Hanna
DOI:10.1055/s-1990-27005
日期:——
5-Tributylstannyl-2,3-dihydro-1,4-dioxin, readily prepared from 5-lithio-2,3-dihydro-1,4-dioxin and chlorotributyltin, smoothly undergoes palladium-catalyzed coupling reactions with acid chlorides, affording 5-acyl- 2,3-dihydro-1,4-dioxin in high yield.
The present invention relates to compounds of the general formula I
1
wherein R
1
, R
2
, R′, R″, n, m and o are defined herein, or a pharmaceutically acceptable salt thereof.
It has been found that the compounds of general formula I are adenosine receptor ligands with a good affinity to the A
2A
-receptor and a high selectivity to the A
1
- and A
3
receptors. These compounds have useful pharmacological activities.
Design, synthesis, and biological evaluation of novel 7-azaindolyl-heteroaryl-maleimides as potent and selective glycogen synthase kinase-3β (GSK-3β) inhibitors
作者:David J. O'Neill、Lan Shen、Catherine Prouty、Bruce R. Conway、Lori Westover、Jun Z. Xu、Han-Cheng Zhang、Bruce E. Maryanoff、William V. Murray、Keith T. Demarest、Gee-Hong Kuo
DOI:10.1016/j.bmc.2004.04.010
日期:2004.6
Two approaches were developed to synthesize the novel 7-azaindolyl-heteroarylmaleimides. The first approach was based upon the palladium-catalyzed Suzuki cross-coupling or Stille cross-coupling of 2-chloro-maleimide 5 with various arylboronic acids or arylstannanes. The second approach was based upon the condensation of ethyl 7-azaindolyl-3-glyoxylate 12 with various acetamides. The hydroxypropyl-substituted
A totalsynthesis of the rubrolone aglycon is detailed and is based on two key Diels−Alder reactions. The AB ring system incorporating a tetrasubstituted pyridine was assembled, enlisting the rare 4π participation of an O-alkyl α,β-unsaturated oxime in an intramolecular [4 + 2] cycloaddition reaction (70%). The C-ring oxygenated tropolone was introduced through a room-temperature, exo selective [4