Naphtho and benzo analogs of the .kappa. opioid agonist trans-(.+-.)-3,4-dichloro-N-methyl-N-[2-(1-pyrrolidinyl)cyclohexyl]benzeneacetamide
摘要:
Further elaboration on the structure-activity relationships in our U-50,488 series has revealed that benzologation of this cyclohexane-1,2-diamine derivative provides compounds which either maintain the interaction with the kappa-receptor (e.g. compounds 3a and 5a in the phenylacetamido series) or eliminate the mu-receptor mediated analgesia (e.g. compounds 3-6 in the benzamido series). Naphthologation also caused the elimination of mu-receptor mediated analgesia (e.g. compounds 17a and 17b).
The present invention is directed to a ring opening reaction of heteronorbomenes and other α,β-unsaturated compounds of formula (Ia) and (Ib):
with a nucleophile in the presence of a transition metal complex, characterized in that it is microwave assisted.
Rhodium-phosphorus complexes and their use in ring opening reactions
申请人:Laboratorios Del. Dr. Esteve, S.A.
公开号:EP2070904A1
公开(公告)日:2009-06-17
The present invention is directed to novel rhodium-phosphorus complexes of formula:
[Rh(PP')(solv)2]X
the process for their preparation and their use as catalysts in the ring opening reaction of heteronorbomenes and other α,β-unsaturated compounds.
An Expedient Enantioselective Route to Diaminotetralins: Application in the Preparation of Analgesic Compounds
作者:Mark Lautens、Keith Fagnou、Valentin Zunic
DOI:10.1021/ol026579i
日期:2002.10.1
[GRAPHICS]Advances to the rhodium-catalyzed asymmetric ring-opening protocol have allowed this methodology to be extended to azabicyclic alkenes, the first time that rhodium has been used in allylic functionalizations with nitrogen leaving groups. The product diaminotetralins are important medicinal compounds. The synthetic utility of this methodology has been demonstrated in the total synthesis of an analgesic compound where the tetralin core, the regiochemistry, and the relative and absolute stereochemistry are all established in the ring-opening step.