Asta Medica, Aktiengesellschaft

Ute Achterrath-Tuckermann

Bernhard Kutscher

Stefan Szelenyi

Jurgen Engel

Ilona Fleischhauer

Georg Niebch

Thomas Buchner

Norbert Hofgen

The invention relates to novel pyrido�3,2-e!pyrazinones, processes for their preparation and their pharmaceutical use. The compounds have anti-asthmatic and anti-allergic effects.

Pyrido �3,2-E!pyrazinones with anti-asthmatic action and processes for

6-amino carboxylic acid derivatives having antiasthmatic and antiallergic properties which can be used for the preparation of medicaments. The compounds have the formula: ##STR1## wherein R.sub.1 and R.sub.2 represent hydrogen, a straight-chain or branched alkyl radical with 1-6 carbon atoms, benzyl or phenylethyl, R.sub.3 represents hydrogen, a straight-chain or branched alkyl radical with 1-6 carbon atoms or benzyl, X represents hydrogen, halogen, C.sub.1 -C.sub.6 -alkyl or C.sub.1 -C.sub.6 -alkoxy, Y.sub.1 and Y.sub.2 represent hydrogen, halogen, C.sub.1 -C.sub.6 -alkyl or C.sub.1 -C.sub.6 -alkoxy, where m, n and o can assume the values from 0-4.

Aminocarboxylic acid derivatives having antiallergic/antiasthmatic

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Maintal, Germany

Ute Achterrath-Tuckermann