METHODS FOR THE SYNTHESIS OF 9-CIS RETINOIDS AND THEIR NOVEL INTERMEDIATES - Patent 0760810

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EP 0 760 810 A1

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(43)	Date of publication:
	12.03.1997 Bulletin 1997/11

(21)	Application number: 95920644.0

(22)	Date of filing: 24.05.1995

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International Patent Classification (IPC):

C07C 255/ 31^{( . )}
C07C 255/ 45^{( . )}

C07C 253/ 30^{( . )}
C07C 403/ 20^{( . )}

(86)	International application number:
	PCT/US1995/006580

(87)	International publication number:
	WO 1995/032946 (07.12.1995 Gazette 1995/52)

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

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Priority:

27.05.1994 US 19940250275

(71)	Applicant: LIGAND PHARMACEUTICALS, INC.
	San Diego, CA 92121 (US)

(72)	Inventor:
	BENNANI, Youssef, L. San Diego, CA 92121 (US)

(74)	Representative: Fürniss, Peter, Dr.
	Kuhnen, Wacker & Partner Alois-Steinecker-Strasse 22 85354 Freising 85354 Freising (DE)

(54)	METHODS FOR THE SYNTHESIS OF 9-CIS RETINOIDS AND THEIR NOVEL INTERMEDIATES