Asymmetric Synthesis of Highly Functionalized 8-Oxabicyclo[3.2.1]octene Derivatives
作者:Huw M. L. Davies、Gulzar Ahmed、Melvyn Rowen Churchill
DOI:10.1021/ja962081y
日期:1996.1.1
Asymmetric synthesis of the oxabicyclic products is possible through utilization of rhodium(II) (S)-N-(tert-butylbenzene)sulfonylprolinate as catalyst or by using (S)-lactate or (R)-pantolactone as chiral auxiliaries on the carbenoid. The highest yields (69−95%) and asymmetric induction (82−95% de) were obtained using 3-siloxy-2-diazo-3-butenoate derivatives as the vinylcarbenoid precursors.
Rhodium Carboxylate Catalyzed Decomposition of Vinyldiazoacetates in the Presence of Heterodienes: Enantioselective Synthesis of the 6-Azabicyclo[3.2.2]nonane and 6-Azabicyclo[3.2.2]nonanone Ring Systems
作者:Huw M. L. Davies、L. Mark Hodges
DOI:10.1021/jo025697g
日期:2002.8.1
catalyzed decomposition of vinyldiazoacetates in the presence of N-phenoxycarbonyl protected 1,2-dihydropyridines or 1-methyl-2-pyridones is a direct method for the construction of the 6-azabicyclo[3.2.2]nonane ring system. The [3 + 4] cycloaddition occurs by a tandem cyclopropanation/Cope rearrangement. Asymmetric induction is possible in these transformations either by using (S)-lactate methyl ester
Tropane prodrugs with central nervous system activity
申请人:Davies M.L. Huw
公开号:US20070232646A1
公开(公告)日:2007-10-04
Disclosed are tropane-based prodrug compounds bearing fatty ester and aromatic substituents. The compounds can be used for alleviating symptoms of CNS disorders.
US7432376B2
申请人:——
公开号:US7432376B2
公开(公告)日:2008-10-07
Enantioselective synthesis of tropanes by reaction of rhodium-stabilized vinylcarbenoids with pyrroles
作者:Huw M.L. Davies、Nicholas J.S. Huby
DOI:10.1016/s0040-4039(00)60899-7
日期:1992.11
Rhodium(II) catalyzed decomposition of vinyldiazomethanes containing either (R)-pantolactone or (S)-lactate as chiral auxiliary in the presence of N-(tert-butoxycarbonyl)pyrrole resulted in an enantioselective entry to tropanes by a tandem cyclopropanation/Cope rearrangement.