Configuration determination of (R)-(-)-1,1,2-triphenyl-3,3-dimethylbutane and the stereochemistry of the reaction of benzhydryllithium with (R)-(+)-.alpha.-phenylneopentyl chloride
Alkylamino, arylamino, and sulfonamido cyclopentyl amide modulators of chemokine receptor activity
申请人:Goble D. Stephen
公开号:US20070117797A1
公开(公告)日:2007-05-24
Compounds of the formula (I) which are modulators of chemokine receptor activity useful in the prevention or treatment of certain inflammatory and immunoregulatory disorders and diseases, allergic diseases, atopic conditions including allergic rhinitis, dermatitis, conjunctivitis, and asthma, as well as autoimmune pathologies such as rheumatoid arthritis and atherosclerosis, and pharmaceutical compositions comprising these compounds and the use of these compounds and compositions in the prevention or treatment of such diseases in which chemokine receptors are involved.
Enantioselective hydrogen transfer reactions from chiral binaphthyl variants of tin hydrides to prochiral radicals
作者:Michael Blumenstein、Matthias Lemmler、Ahlke Hayen、Jürgen O. Metzger
DOI:10.1016/j.tetasy.2003.07.018
日期:2003.10
Enantioselective, reagent-controlled radical reductions of prochiral alkyl radicals, mediated by binaphthyl variants of tinhydrides can be carried out in a highly selective fashion: a maximum selectivity of 68% e.e. was reached. Temperature, solvent, Lewis acid and substituent effects are selectivity-controlling elements. The reactions can be conducted catalytically with 1 mol% of chiral information