2-Substituted-3-methyl-.gamma.-pyrone tricyclic derivatives

Details 2-Substituted-3-methyl-.gamma.-pyrone tricyclic derivatives 2-Substituted-3-methyl-.gamma.-pyrone tricyclic derivatives

1979-01-29

1980-02-19

Ford, John M.

Drug, bio-affecting and body treating compositions

Antigen, epitope, or other immunospecific immunoeffector

Parasitic organism or component thereof or substance...

548253, C07D25710, C07D49314, C07D40504, A61K 3135

Patent

active

041894901

ABSTRACT:
Compounds of formula I ##STR1## in which R.sup.1 is hydrogen, halogen, nitro, trifluoromethyl, lower alkyl or lower alkoxy; R.sup.2 is hydrogen or lower alkyl; R.sup.3 is hydroxy, 1H-tetrazol-5-yl or COOR.sup.4 wherein R.sup.4 is hydrogen or lower alkyl, and X is O, S, SO or SO.sub.2, are disclosed. The compounds of formula I are useful for treating allergic conditions. Methods for the preparation and use of the compounds are disclosed.

REFERENCES:
patent: 4116971 (1978-09-01), Von Strandtmann et al.

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