200956-54-3Relevant academic research and scientific papers
Ruthenium olefin metathesis catalysts with modified styrene ethers: Influence of steric and electronic effects
Zaja, Mirko,Connon, Stephen J.,Dunne, Aideen M.,Rivard, Michael,Buschmann, Nicole,Jiricek, Jan,Blechert, Siegfried
, p. 6545 - 6558 (2007/10/03)
A series of olefin metathesis catalysts with modified isopropoxybenzylidene ligands were synthesised, and the effects of ligands on the rate of metathesis investigated. Increased steric hinderance ortho to the isopropoxy group enhanced reaction rates. In the case of N-heterocyclic carbene complexes, decreasing electron density at both the chelating oxygen atom and the Ru=C bond accelerated reaction rates appreciably. Catalysts containing a tricyclohexylphosphane ligand, followed the same trend with regard to benzylidene electrophilicity, while higher electron density at oxygen enhanced reaction rates.
Phenyl spiroethercycloalkyl tachykinin receptor antagonists
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, (2008/06/13)
The present invention is directed to certain novel compounds represented by structural formula I: STR1 or a pharmaceutically acceptable salt thereof, wherein R 3, R 6, R 7, R 8, R 11, R 12, R 13, m, n and the dashed lines are defined herein. The invention is also concerned with pharmaceutical formulations comprising these novel compounds as active ingredients and the use of the novel compounds and their formulations in the treatment of certain disorders. The compounds of this invention are tachykinin receptor antagonists and are useful in the treatment of inflammatory diseases, pain or migraine, asthma and emesis.
