PROCESS FOR THE PREPARATION OF CEPHALOSPORINS VIA REDUCTIVE DICARBONYL CYCLIZATION INDUCED BY TRIALKYL PHOSPHITE OF 4-THIOAZETIDINONE DERIVATIVES OBTAINED FROM PENICILLINS - Patent 0876377

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EP 0 876 377 A1

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(43)	Date of publication:
	11.11.1998 Bulletin 1998/46

(21)	Application number: 96943044.0

(22)	Date of filing: 05.12.1996

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International Patent Classification (IPC):

C07D 205/ 095^{( . )}
C07D 501/ 04^{( . )}

C07D 501/ 00^{( . )}

(86)	International application number:
	PCT/EP1996/005449

(87)	International publication number:
	WO 1997/020848 (12.06.1997 Gazette 1997/25)

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

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Priority:

06.12.1995 IT 1995MI02571

(71)	Applicant: 3 EXO S.r.l.
	20154 Milan (IT)

(72)	Inventors:
	FRANCESCHI, Giovanni I-20153 Milan (IT) GARGIUOLO, Francesco I-20127 Milan (IT) OREZZI, Piergiuseppe I-20156 Milan (IT)

(74)	Representative: Gervasi, Gemma, Dr.
	Studio Brevetti e Marchi NOTARBARTOLO & GERVASI S.r.l., Corso di Porta Vittoria, 9 20122 Milano 20122 Milano (IT)

(54)	PROCESS FOR THE PREPARATION OF CEPHALOSPORINS VIA REDUCTIVE DICARBONYL CYCLIZATION INDUCED BY TRIALKYL PHOSPHITE OF 4-THIOAZETIDINONE DERIVATIVES OBTAINED FROM PENICILLINS