3,3-DISUBSTITUTED TRI- AND TETRACYCLIC INDOLIN-2-ONES USEFUL FOR THE TREATMENT OF COGNITIVE DISORDERS - Patent 0664810

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EP 0 664 810 A1

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(43)	Date of publication:
	02.08.1995 Bulletin 1995/31

(21)	Application number: 93923238.0

(22)	Date of filing: 12.10.1993

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International Patent Classification (IPC):

A61K 31/ 41^{( . )}
A61K 31/ 535^{( . )}
A61K 31/ 55^{( . )}
A61P 25/ 28^{( . )}
C07D 487/ 06^{( . )}
C07D 513/ 06^{( . )}

A61K 31/ 495^{( . )}
A61K 31/ 54^{( . )}
A61P 25/ 00^{( . )}
C07D 471/ 06^{( . )}
C07D 498/ 06^{( . )}

(86)	International application number:
	PCT/US1993/009476

(87)	International publication number:
	WO 1994/009009 (28.04.1994 Gazette 1994/10)

(84)	Designated Contracting States:
	DE ES FR GB IT

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Priority:

13.10.1992 US 19920960522

(71)	Applicant: THE DU PONT MERCK PHARMACEUTICAL COMPANY
	Wilmington, Delaware 19898 (US)

(72)	Inventors:
	EARL, Richard, Alan Wilmington, DE 19810 (US) MYERS, Melvyn, John Middletown, CT 06457 (US)

(74)	Representative: von Kreisler, Alek, Dipl.-Chem., et al
	Patentanwälte, von Kreisler-Selting-Werner, Bahnhofsvorplatz 1 (Deichmannhaus) D-50667 Köln D-50667 Köln (DE)

(54)	3,3-DISUBSTITUTED TRI- AND TETRACYCLIC INDOLIN-2-ONES USEFUL FOR THE TREATMENT OF COGNITIVE DISORDERS