(19)

(11)

EP 0 257 072 A1

(12)

(43) Date of publication: 02.03.1988 Bulletin 1988/09 (21) Application number: 87901432.0 (22) Date of filing: 09.02.1987

(51) International Patent Classification (IPC):  C07D 211/ 26( . ) C07D 471/ 04( . ) (86) International application number: PCT/EP1987/000070 (87) International publication number: WO 1987/005022 (27.08.1987 Gazette 1987/19)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 17.02.1986 IT 19860019431 (71) Applicant: AZIENDE CHIMICHE RIUNITE ANGELINI FRANCESCO A.C.R.A.F. S.p.A. I-00181 Roma (IT)	(72) Inventors: BAIOCCHI, Leandro I-00161 Roma (IT) SILVESTRINI, Bruno I-00181 Roma (IT) (74) Representative: Marchi, Massimo, et al  c/o Marchi & Mittler s.r.l. Viale Lombardia 20 I-20131 Milano I-20131 Milano (IT)