(19)
(11) EP 0 912 581 A1

(12)

(43) Date of publication:
06.05.1999 Bulletin 1999/18

(21) Application number: 97934027.0

(22) Date of filing: 30.06.1997
(51) International Patent Classification (IPC): 
C07F 5/ 02( . )
(86) International application number:
PCT/US1997/011324
(87) International publication number:
WO 1998/001453 (15.01.1998 Gazette 1998/02)
(84) Designated Contracting States:
AT BE CH DE DK ES FR GB GR IE IT LI LU NL PT SE

(30) Priority: 08.07.1996 US 19960021319P

(71) Applicant: Du Pont Pharmaceuticals Company
Wilmington, DE 19898 (US)

(72) Inventors:
  • MA, Philip
    Chadds Ford, PA 19317 (US)
  • JIANG, Biao
    Shangai 200032 (CN)

(74) Representative: Pett, Christopher Phineas, et al 
Frank B. Dehn & Co., European Patent Attorneys, 179 Queen Victoria Street
London EC4V 4EL
London EC4V 4EL (GB)

   


(54) METHOD FOR PREPARING $g(a)-CHLOROBORONIC ACIDS FROM MANNITOL