Investigations concerning the organolanthanide and group 3 metallocene-catalyzed cyclization–functionalization of nitrogen-containing dienes
摘要:
Organolanthanide catalyzed cyclization-silylation of nitrogen-containing polyunsaturated systems allows access to core structures commonly found in naturally occurring alkaloids. Nitrogen-containing dienes with various substitution patterns were investigated. The method was most successful for substrates with terminal alkenes. Cyclization upon pendant 1,1-disubstituted olefins was not realized under various conditions. Interestingly, sterically hindered sulfonamides, which were previously believed to render the catalyst inactive, were actually compatible with the catalyst, thus affording the cyclized products after prolonged reaction times. Variations using fused ring systems were also investigated. (C) 2005 Elsevier Ltd. All rights reserved.
[EN] (1,2,3,4-TETRAHYDROQUINOLIN-8-YL)-HEPTATRIENOIC ACID DERIVATIVES HAVING SERUM GLUCOSE REDUCING ACTIVITY<br/>[FR] DERIVES D'ACIDE (1,2,3,4-TETRAHYDROQUINOLIN-8-YL)-HEPTATRIENOIQUE A ACTIVITE DE REDUCTION DU GLUCOSE DU SERUM
申请人:ALLERGAN INC
公开号:WO2004108678A1
公开(公告)日:2004-12-16
Compounds of the formula (I) where the variables have the meaning defined in the specification are capable of reducing serum glucose levels in diabetic mammals without the undesirable side effects of reducing serum thyroxine levels and transiently increasing triglyceride levels.