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(11)

EP 0 156 889 A1

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(43) Date of publication: 09.10.1985 Bulletin 1985/41 (21) Application number: 84903630.0 (22) Date of filing: 21.09.1984

(51) International Patent Classification (IPC):  C07C 317/ 42( . ) C07C 323/ 44( . ) (86) International application number: PCT/EP1984/000293 (87) International publication number: WO 1985/001283 (28.03.1985 Gazette 1985/08)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 23.09.1983 US 19830535019 23.09.1983 US 19830535445 (71) Applicant: SCHERING CORPORATION Kenilworth New Jersey 07033 (US)	(72) Inventors: VASHI, Dhiru, B. Plainsboro, NJ 08536 (US) CLARK, Jeffrey, N. New Egypt, NJ 08533 (US) LINDO, Neil, A. New Providence, NJ 07974 (US) (74) Representative: von Kreisler, Alek, Dipl.-Chem., et al  Patentanwälte von Kreisler-Selting-Werner Postfach 10 22 41 D-50462 Köln D-50462 Köln (DE)