Process and intermediates for the preparation of...

Details Process and intermediates for the preparation of... Process and intermediates for the preparation of...

2003-09-23

2004-11-02

Qazi, Sabiha (Department: 1616)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C548S303100, C548S341500

Reexamination Certificate

active

06812349

ABSTRACT:

TECHNICAL FIELD
The invention relates to processes and intermediates for the preparation of imidazopyridines. These are needed as intermediates in the preparation of medicaments for the treatment of peptic ulcers.
PRIOR ART
The International Patent Application WO98/42707 describes 2,3-dimethyl-8-hydroxy-9-phenyl-7,8,9,10-tetrahydroimidazo[1,2-h][1,7]naphthyridin-7-ones and various processes for their preparation.


REFERENCES:
patent: 6197783 (2001-03-01), Senn-Bilfinger et al.
patent: 6716990 (2004-04-01), Ulrich et al.
patent: 0033094 (1981-08-01), None
patent: 98/37080 (1998-08-01), None
patent: 10/42707 (1998-10-01), None

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