Patent ID: 7439362

Claim:
A compound of formula I: wherein either R 1 and R 2 together with the nitrogen atom to which they are attached are piperazinyl, wherein the second nitrogen atom is substituted by (C 1-6 )alkoxycarbonyl or by (C 6-18 )aryl, which (C 6-18 )aryl is substituted by one or more halogen, (C 1-6 )haloalkyl, aminocarbonyl, or R 1 is hydrogen and R 2 is piperidinyl, attached via a carbon atom of the piperidinyl ring, wherein the nitrogen atom is substituted by (C 1-6 )alkoxycarbonyl or by (C 6-18 )aryl, and R 3 is (C 6-18 )aryl or (C 6-18 )aryl(C 1-4 )alkyl, which aryl is substituted by one or more halogen, aminocarbonyl, or (C 1-6 )haloalkyl.