Substituted (4-oxo-4H-1-benzopyran-2-yl)cyclopropane carboxylic

Details Substituted (4-oxo-4H-1-benzopyran-2-yl)cyclopropane carboxylic Substituted (4-oxo-4H-1-benzopyran-2-yl)cyclopropane carboxylic

1975-11-20

1977-04-19

Helfin, Bernard

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2603455, 424283, C07D31102

Patent

active

040187985

ABSTRACT:
The present invention relates to substituted [4-oxo-4H-1-benzopyran-2-yl]cyclopropane carboxylic acids and esters having the following structural formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are hydrogen, alkyl, lower alkoxy, phenyl or when R.sub.1 and R.sub.2 are hydrogen, R.sub.3 and R.sub.4 taken together form an additional aromatic ring and A is hydrogen or ethyl. The compounds of this invention exhibit anti-allergy properties and are indicated in the management of allergic manifestations such as bronchial asthma.

REFERENCES:
patent: 3823165 (1974-07-01), Cairns et al.
patent: 3853921 (1974-12-01), Klutchko et al.
patent: 3948955 (1976-04-01), Lee et al.

Affiliated with

Also associated with

Rating

Substituted (4-oxo-4H-1-benzopyran-2-yl)cyclopropane carboxylic does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Substituted (4-oxo-4H-1-benzopyran-2-yl)cyclopropane carboxylic , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Substituted (4-oxo-4H-1-benzopyran-2-yl)cyclopropane carboxylic will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-102783