Substituted 2H-pyran-2,6 (3H)-dione derivatives useful in treatm

Details Substituted 2H-pyran-2,6 (3H)-dione derivatives useful in treatm Substituted 2H-pyran-2,6 (3H)-dione derivatives useful in treatm

1976-04-30

1977-05-24

Meyers, Albert T.

Drug, bio-affecting and body treating compositions

Effervescent or pressurized fluid containing

Organic pressurized fluid

2602396, 2603459, 424229, 424283, A01N 928, A61L 904, C07D23142, C07D30922

Patent

active

040256146

ABSTRACT:
Substituted 2H-pyran-2,6(3H)-dione derivatives useful in the treatment of allergic conditions are prepared by reaction of 3,5-diacetyl-4,6-dihydroxy-2H-pyran-2-one with an appropriate aniline.

REFERENCES:
J. Org. Chem. 21 686-688 (1956), Wiley et al.
J. Chem. Soc. (c) 2721-2726 (1971), Kiang et al.
Derwent Basic Abstract 12477X of Netherlands application No. 7509-032, Feb. 2, 1976.

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