Novel Complex N-Heterocycles via Intramolecular 1,5-Electrocyclizations: 1,2,3,4,4a,5,5a,10-Octahydropyrido-[4",3":2',3']cyclobuta[1',2':4,5]pyrrolo[2,3-b]pyridines
摘要:
The synthesis of 2-amino-3-isopropenylpyridine (5) and 2-amino-5-chloro-3-isopropenylpyridine (6) and their toluenesulfonic acid catalyzed reactions in refluxing toluene with some 1-substituted piperidin-4-ones are described. The toluenesulfonic acid catalyzed reaction of the pyridine derivatives (5) and (6) with 1-benzyl-, 1-benzoyl- and 1-methylpiperidin-4-one lead to novel pyrrolo[2,3-b]-pyridines (7-12) in good to excellent yields in diastereoisomeric pure form (Scheme 2, Table 1). An intramolecular 1,5-electrocyclization of the dipolar reactive intermediate (13) as a key step (Scheme 3) is proposed for the formation of the compounds (7-12).
Novel Complex N-Heterocycles via Intramolecular 1,5-Electrocyclizations: 1,2,3,4,4a,5,5a,10-Octahydropyrido-[4",3":2',3']cyclobuta[1',2':4,5]pyrrolo[2,3-b]pyridines
摘要:
The synthesis of 2-amino-3-isopropenylpyridine (5) and 2-amino-5-chloro-3-isopropenylpyridine (6) and their toluenesulfonic acid catalyzed reactions in refluxing toluene with some 1-substituted piperidin-4-ones are described. The toluenesulfonic acid catalyzed reaction of the pyridine derivatives (5) and (6) with 1-benzyl-, 1-benzoyl- and 1-methylpiperidin-4-one lead to novel pyrrolo[2,3-b]-pyridines (7-12) in good to excellent yields in diastereoisomeric pure form (Scheme 2, Table 1). An intramolecular 1,5-electrocyclization of the dipolar reactive intermediate (13) as a key step (Scheme 3) is proposed for the formation of the compounds (7-12).
PROCESS FOR THE MANUFACTURE OF PHARMACEUTICALLY ACTIVE COMPOUNDS
申请人:Hildbrand Stefan
公开号:US20110028511A1
公开(公告)日:2011-02-03
According to the present invention there are provided novel processes for the manufacture of the compound of formula 1
as well as novel synthesis routes for key intermediates used in those processes.
根据本发明提供了制备化合物1的新工艺,以及用于这些工艺中的关键中间体的新合成路线。
US8329724B2
申请人:——
公开号:US8329724B2
公开(公告)日:2012-12-11
[EN] PROCESS FOR THE MANUFACTURE OF PHARMACEUTICALLY ACTIVE COMPOUNDS<br/>[FR] PROCÉDÉ DE FABRICATION DE COMPOSÉS PHARMACEUTIQUEMENT ACTIFS
申请人:HOFFMANN LA ROCHE
公开号:WO2011015522A2
公开(公告)日:2011-02-10
According to the present invention there are provided novel processes for the manufacture of the compound of formula (1) as well as novel synthesis routes for key intermediates used in those processes.
Novel Complex N-Heterocycles via Intramolecular 1,5-Electrocyclizations: 1,2,3,4,4a,5,5a,10-Octahydropyrido-[4",3":2',3']cyclobuta[1',2':4,5]pyrrolo[2,3-b]pyridines
作者:Harald Walter、Carsten Sundermann
DOI:10.3987/com-98-8190
日期:——
The synthesis of 2-amino-3-isopropenylpyridine (5) and 2-amino-5-chloro-3-isopropenylpyridine (6) and their toluenesulfonic acid catalyzed reactions in refluxing toluene with some 1-substituted piperidin-4-ones are described. The toluenesulfonic acid catalyzed reaction of the pyridine derivatives (5) and (6) with 1-benzyl-, 1-benzoyl- and 1-methylpiperidin-4-one lead to novel pyrrolo[2,3-b]-pyridines (7-12) in good to excellent yields in diastereoisomeric pure form (Scheme 2, Table 1). An intramolecular 1,5-electrocyclization of the dipolar reactive intermediate (13) as a key step (Scheme 3) is proposed for the formation of the compounds (7-12).