合成 von ZNS-Wirkstoffen: Pyran-, thiopyran- 和 piperidinanellierte Oxa-carbabenzomorphane
摘要:
Tetrahydro-3-pyranon (13a) 和-thiopyranon (13b) setzen sich mit Salicylidenaceton (1a) 和 NaH in DMSO zu pyran-bzw。thiopyranellierten Oxaanalogen von Carbabenzomorphanen um: 13a reagiert regioselektiv in 4-Stellung zu den B/C-trans-und cis-Derivaten 10 und 12, 13b reagiert in 2- und 4-Stellung, wore 16 17a 和 19 entstehen。Reaktion des Enamins 20 mit dem Salicylidenacetanonderivat 1b führt über das Oc
[EN] SUBSTITUTED SULFONAMIDE DERIVATIVES<br/>[FR] DÉRIVÉS SUBSTITUÉS DE SULFONAMIDE
申请人:GRUENENTHAL GMBH
公开号:WO2009124746A1
公开(公告)日:2009-10-15
The invention relates to substituted sulfonamide derivatives, processes for the preparation thereof, medicaments containing these compounds and the use of substituted sulfonamide derivatives for the preparation of medicaments.
A Fischer indolization with phenyl hydrazine derivatives interrupted by reduction with a hydrido borate reagent at the stage of the iminium ion intermediate furnished hexahydro carbazole derivatives with a functionalized side chain at position 4a. The cyclic δ‐oxoesters applied in this transformation were obtained from ethyl acrylate and cycloalkanones.
Furo 3,2-c pyridine derivatives and their use in treating depression and
申请人:Synthelabo
公开号:US04661498A1
公开(公告)日:1987-04-28
Compounds of general formula (I) ##STR1## wherein R1 represents a phenyl, halophenyl, methylphenyl, ethylphenyl, methoxyphenyl, trifluoromethylphenyl or naphthyl group, R2 represents hydrogen or a methyl or phenyl group, and R3 represents hydrogen or a benzyl group, except compounds in which R1 is a phenyl or 4-fluorophenyl group, R2 is hydrogen and R3 is hydrogen or a benzyl group, and their pharmaceutically acceptable acid addition salts have useful anti-depressant and anti-ischaemic properties.
Inverse electron demand diels-alder reactions of 5-nitropyrimidine with enamines. synthesis of 3-nitropyridine derivatives
作者:Antonius T.M. Marcelis、Henk C. Van Der Plas
DOI:10.1016/s0040-4020(01)80099-5
日期:1989.1
The reaction of cyclic and non-cyclic enamines with 5-nitropyrimidine has been studied. Many enamines react in an inverse electron-demand Diels-Alderreaction, leading to the formation of 3-nitropyridines. N,S-ketene acetals were also found to react with 5-nitropyrimidine. The mechanism of the reaction will be discussed.