Patent ID: 8372980

Claim:
A compound represented by structural formula: or a pharmaceutically acceptable salt of said compound, wherein Het is a pyridyl group which is substituted by 1 to 4 moieties, W, wherein each W is independently selected from the group consisting of hydrogen, alkyl or R 21 -substituted-aryl; R 1 and R 2 are independently selected from the group consisting of hydrogen, alkyl, fluoroalkyl, difluoroalkyl, trifluoroalkyl, hydroxyl, hydroxyalkyl or alkoxy; R 8 is H or alkyl; R 9 is H; R 10 and R 11 are independently selected from the group consisting of H or alkyl; R 12 and R 12a are independently selected from the group consisting of hydrogen, alkyl and halogen; R 17 is H or alkyl; and R 21 is 1 to 3 moieties and each R 21 is independently selected from the group consisting of hydrogen, —CN, —CF 3 , —OCF 3 , halogen, —NO 2 , alkyl, —OH, alkoxy, alkylamino-, di-(alkyl)amino- or —C(O)(OR 17 )—; R 32 is hydrogen or alkyl; and R 33 is hydrogen or alkyl.