Benzopyran compounds, process for preparing the same and...

Details Benzopyran compounds, process for preparing the same and... Benzopyran compounds, process for preparing the same and...

2003-02-26

2008-11-25

Morris, Patricia L (Department: 1625)

Drug, bio-affecting and body treating compositions

Designated organic active ingredient containing

Having -c-, wherein x is chalcogen, bonded directly to...

C548S236000

Reexamination Certificate

active

07456205

ABSTRACT:
The invention relates to the benzopyran compounds of formula (I), or the salts thereof, in which, the bond between 3 and 4 positions is a single or double bond; R1represents a hydrogen atom or a C1-6alkyl that can be substituted; R2represents a hydrogen atom, a C1-6alkyl that can be substituted or an aromatic carbocyclic or aromatic heterocyclic group that can be substituted. The invention also relates to a process for preparing such compounds or their salts as well as the use of such compounds or their salts in the preparation of the medicine against type II diabetes mellitus.

REFERENCES:
patent: 1218049 (1996-06-01), None
patent: 1183412 (1998-06-01), None
patent: 1359383 (2002-07-01), None
patent: 3-240783 (1991-10-01), None
Madhavan et al., “Novel Coumarin, etc.,” Bioorgainc & Medicinal Chemistry letters 13 (2003) 2547-2551.
Swaroop et al., “Synthesis of 3-(3,3-Dimethylallyl)xanthyletin”,Indian Journal of Chemistry, vol. 22B, Feb. 1983, pp. 105-108.

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