Synthesis of 2-bromo-7-methyl-3,5-dihydro-imidazo[4,5-d]pyridazin-4-one and 3-alkyl-2-bromo-3,5-dihydro-imidazo[4,5-d]pyridazin-4-one and their selective elaboration
摘要:
Two synthetic routes to the versatile 3,5-dihydro-imidazo[4,5-d]pyridazin-4-ones 2 and 5 have been developed that allow the production of multigram quantities without the need of any chromatographic purification. Broad and selective elaboration of the heteroaromatic scaffolds has also been accomplished. (c) 2008 Elsevier Ltd. All rights reserved.
Ring forming reactions of imines of 2-aminobenzaldehyde and related compounds
作者:Per Wiklund、Jan Bergman
DOI:10.1039/b209505j
日期:2003.1.13
By addition of organometallic reagents to 2-aminobenzonitriles followed by quenching with suitable electrophiles (acyl halides, aldehydes and ketones), several types of 6-membered benzofused aromatic and non-aromatic nitrogen heterocycles could be obtained. Rearrangements leading to 1,2-dihydro-3H-1,4-benzodiazepin-3-ones and preparation of various quinazolines are described.
8-[3-Amino-Piperidin-1-YL]-Xanthine, deren Herstellung und deren Verwendung als Arzneimittel
申请人:Boehringer Ingelheim Pharma GmbH & Co. KG
公开号:EP2070539A1
公开(公告)日:2009-06-17
Die vorliegende Erfindung betrifft Zusammensetzungen enthaltend eine substituierte Xanthine der allgemeinen Formel
in der R1 bis R3 wie in den Anspruch 1 definiert sind, deren Tautomere, deren Stereoisomere, deren Gemische, deren Prodrugs und deren Salze, und einen zweiten Wirkbestandteil ausgewählt aus der Gruppe bestehend aus Antidiabetika, Lipidsenker, Wirkstoffe zur Behandlung von Obesitas und Medikament zur Beeinflussung des Bluthochdrucks.
8-[3-AMINO-PIPERIDIN-1-YL]-XANTHINES, THE PREPARATION THEREOF AND THEIR USE AS PHARMACEUTICAL COMPOSITIONS
申请人:Himmelsbach Frank
公开号:US20080255159A1
公开(公告)日:2008-10-16
The present invention relates to substituted xanthines of general formula
wherein R
1
to R
3
are defined as in claims
1
to
16
, the tautomers, the stereoisomers, the mixtures, the prodrugs thereof and the salts thereof which have valuable pharmacological properties, particularly an inhibiting effect on the activity of the enzyme dipeptidylpeptidase-IV (DPP-IV).
8-[3-amino-piperidin-1-yl]-xanthines, the preparation thereof and their use as pharmaceutical compositions
申请人:Boehringer Ingelheim Pharma GmbH & Co. KG
公开号:US20040097510A1
公开(公告)日:2004-05-20
The present invention relates to substituted xanthines of general formula
1
wherein R
1
to R
3
are defined as in claims 1 to 16, the tautomers, the stereoisomers, the mixtures, the prodrugs thereof and the salts thereof which have valuable pharmacological properties, particularly an inhibiting effect on the activity of the enzyme dipeptidylpeptidase-IV (DPI-IV).
8-[3-amino-piperidin-1-yl]-xanthine, deren Herstellung und deren Verwendung als Arzneimittel
申请人:Boehringer Ingelheim Pharma GmbH & Co. KG
公开号:EP2058311A2
公开(公告)日:2009-05-13
Die vorliegende Erfindung betrifft substituierte Xanthine der allgemeinen Formel
in der R1 bis R3 wie in den Ansprüchen 1 bis 16 definiert sind, deren Tautomere, deren Stereoisomere, deren Gemische, deren Prodrugs und deren Salze, welche wertvolle pharmakologische Eigenschaften aufweisen, insbesondere eine Hemmwirkung auf die Aktivität des Enzyms Dipeptidylpeptidase-IV (DPP-IV).