(19)

(11)

EP 1 922 072 A2

(12)

(88) Date of publication A3: 09.08.2007 (43) Date of publication: 21.05.2008 Bulletin 2008/21 (21) Application number: 06813393.3 (22) Date of filing: 11.08.2006

(51) International Patent Classification (IPC):  A61K 31/496(2006.01) C07D 241/04(2006.01) (86) International application number: PCT/US2006/031472 (87) International publication number: WO 2007/021990 (22.02.2007 Gazette 2007/08)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 11.08.2005 US 707488 P (71) Applicant: Palatin Technologies, Inc. Cranbury, NJ 08512 (US)

(72) Inventors: SHARMA, Shubh, D. Cranbury, NJ 08512 (US) SHI, Yi-Qun East Brunswick, NJ 08516 (US) BURRIS, Kevin Washington Crossing, PA 18977 (US) WU, Zhijun Plainsboro, NJ 08536 (US) PURMA, Papireddy East Brunswick, NJ 08536 (US) BONUGA, Yadi, Reddy Plainsboro, NJ 08536 (US) (74) Representative: Snodin, Michael D. et al Potter Clarkson LLP Park View House 58 The Ropewalk Nottingham NG1 5DD Nottingham NG1 5DD (GB)