Benzopyrane derivatives

Details Benzopyrane derivatives Benzopyrane derivatives

1979-11-21

1982-01-05

Jiles, Henry R.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

26034321, 546256, 546269, C07D31108

Patent

active

043093531

ABSTRACT:
New benzopyrane derivatives of the general formula ##STR1## in which R is free, esterified or amidated carboxyl, Ph is 1,2-phenylene which contains the group R--CO--NR.sub.3 -- and is otherwise unsubstituted or is substituted, X is a group of the formula --CO--CR.sub.1 .dbd.CR.sub.2 --, in which R.sub.1 and R.sub.2 independently of one another are hydrogen, acyl or a substituted or unsubstituted hydrocarbon radical or a hetero-analogue thereof, or conjointly are 3-membered to 5-membered lower alkylene, and R.sub.2 can also be free or etherified hydroxyl or hydroxyl etherified by an organic carboxylic acid, and R.sub.3 is hydrogen or lower alkyl, are useful as anti-allergic agents.

REFERENCES:
patent: 2610152 (1952-09-01), Ackermann
patent: 3008969 (1961-11-01), Pretka
patent: 3201406 (1965-08-01), Moffett
patent: 3681397 (1972-08-01), Knupfer et al.
patent: 3792063 (1974-02-01), Cairns et al.
patent: 3937719 (1976-02-01), Sellstedt et al.
patent: 3947462 (1976-03-01), Arendsen et al.

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