The catalytic dearomatization of pyridines, accessing medicinally relevant N-heterocycles, is of high interest. Currently direct, dearomative strategies rely generally on reduction or nucleophilic addition, thus limiting the architecture of the dearomatized products to a six-membered ring. We herein introduce a catalytic, dearomative cycloaddition reaction with pyridines using photoinduced energy transfer
Compounds of the invention are useful in inhibiting thrombin and associated thrombotic occlusions having the following structure:
1
or a pharmaceutically acceptable salt thereof, e.g. where R
3
is —CH
2
NH
2
, —CH
2
CH
2
NH
2
, or —CH
2
NHC(O)OC(CH
3
)
3
.
Room-temperature cobalt-catalyzed arylation of aromatic acids: overriding the ortho-selectivity via the oxidative assembly of carboxylate and aryl titanate reagents using oxygen
作者:Kun-Ming Liu、Rui Zhang、Xin-Fang Duan
DOI:10.1039/c5ob02496j
日期:——
A room temperature phosphine or NHC ligand-free cobalt-catalyzed arylation of (hetero)aromatic acids has been developed.
An efficient and robust methodology based on electrochemical techniques for the direct synthesis of aromatic lactones through dehydrogenative C−O cyclization is described. This new and useful electrochemical reaction can tolerate a variety of functional groups, and is scalable to 100 g under mild conditions. Remarkably, heterocycle‐containing substrates can be employed, thus expanding the scope of
The present invention relates to novel PPAR agonist compounds as well as pharmaceutical compositions containing them.
The compounds according to the invention are of quite particular therapeutic interest, notably for treating diabetes and/or dyslipidemias, as well as for preventing cardiovascular pathologies.