Catalytic alkanedehydrogenation is a reaction with tremendous potential for application. We describe a highlyactive PSCOP‐pinceriridiumcatalyst for transferdehydrogenation of cyclic and linear alkanes. The dehydrogenation of linear alkanes occurs under relatively mild conditions with high regioselectivity for α‐olefin formation. In addition, the catalyst system is very effective in the dehydrogenation
Selective and Efficient Cycloisomerization of Alkynols Catalyzed by a New Ruthenium Complex with a Tetradentate Nitrogen-Phosphorus Mixed Ligand
作者:Pei Nian Liu、Fu Hai Su、Ting Bin Wen、Herman H.-Y. Sung、Ian D. Williams、Guochen Jia
DOI:10.1002/chem.200903441
日期:——
The new ruthenium complex [Ru(N3P)(OAc)][BPh4] (4), in which N3P is the N,P mixed tetradentate ligand N,N‐bis[(pyridin‐2‐yl)methyl]‐[2‐(diphenylphosphino)phenyl]methanamine was synthesized. The complex was found to be catalytically active for the endo cycloisomerization of alkynols. The catalytic reactions can be used to synthesize five‐, six‐, and seven‐membered endo‐cyclic enol ethers in good to
The present disclosure provides a compound of formula (I):
or a pharmaceutically acceptable salt thereof, and its therapeutic uses for activating a growth factor pathway, promoting wound healing, promoting tissue repair, and treating hearing loss, skeletal muscle loss, organ degeneration, tissue damage, neurodegeneration, and muscular atrophy. The disclosure further provides pharmaceutical compositions and combinations. The present disclosure also relates to the use of such compounds for research or other non-therapeutic purposes.
Compounds having the formula I wherein
wherein R
1
, R
2
, R
3b
, R
4a
, R
4b
, R
4c
and as defined herein are Hepatitis C virus NS5b polymerase inhibitors. Also disclosed are compositions and methods for treating an HCV infection and inhibiting HCV replication.