Rhodium catalyzed hydroformylation of β-pinene and camphene: effect of phosphorous ligands and reaction conditions on diastereoselectivity
作者:Humberto J.V. Barros、Maria L. Ospina、Eduardo Arguello、William R. Rocha、Elena V. Gusevskaya、Eduardo N. dos Santos
DOI:10.1016/s0022-328x(03)00098-6
日期:2003.4
effect of phosphorus ligands on the rhodium catalyzed hydroformylation of β-pinene and camphene has been studied. In unmodified systems, β-pinene undergoes a fast isomerization to α-pinene. At longer reaction times and higher temperatures, the isomerization equilibrium is shifted resulting in the 80% chemoselectivity for β-pinene hydroformylation products (97% trans). The addition of various diphosphines
Hydronopol derivatives as agonists on human ORL1 receptors
申请人:Mentzel Matthias
公开号:US20050131004A1
公开(公告)日:2005-06-16
The invention relates to a group of hydronopol derivatives which are agonists on human ORL1 (nociceptin) receptors. The invention also relates to the preparation of these compounds, to pharmaceutical compositions containing a pharmacologically active amount of at least one of these novel hydronopol derivatives as an active ingredient, as well as to the use of these pharmaceutical compositions for the treatment of disorders in which ORL1 receptors are involved.
The invention relates to compounds of the general formula (1)
wherein the symbols have the meanings as given in the description.