TETRACYCLIC QUINAZOLINE DERIVATIVES, PREPARATION AND USE

Tetracyclic quinazoline derivatives of the formula in which A, X and R have the meaning given in the description, and their preparation are described. The novel substances are suitable for combating diseases.

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Bibliographische Detailangaben
Hauptverfasser:	OSTERSEHLT, BERND, RENDENBACH, BEATRICE, FRANKE, ALBRECHT, VON PHILIPSBORN, GERDA, SCHLECKER, RAINER
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	CHEMISTRY HETEROCYCLIC COMPOUNDS HUMAN NECESSITIES HYGIENE MEDICAL OR VETERINARY SCIENCE METALLURGY ORGANIC CHEMISTRY PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS ORMEDICINAL PREPARATIONS
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Beschreibung
Zusammenfassung:	Tetracyclic quinazoline derivatives of the formula in which A, X and R have the meaning given in the description, and their preparation are described. The novel substances are suitable for combating diseases.