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Substituted 3-(1-aminoethylidene)-5-cinnamoyl-2H-pyran-2,6(3H)-diones

Substituted 3-(1-aminoethylidene)-5-cinnamoyl-2H-pyran-2,6(3H)-diones useful as inhibitors of certain antigen-antibody reactions, particularly in alleviating allergic manifestations such as asthma, are prepared by reaction of a 3-(1-aminoethylidene)-5-ace

Substituted 2H-pyran-2,6(3H)-dione derivatives, pharmaceutical compositions comprising such derivatives and methods of inhibiting the antigen-antibody reaction

Substituted 2H-pyran-2,6(3H)-dione derivatives, pharmaceutical compositions comprising such derivatives and methods of inhibiting the antigen-antibody reaction by administering said compositions. The active ingredients are the products formed by the react