N2-[(5Z)-5-({1-[2,4-bis(trifluoromethyl)benzyl]piperidin-4-yl}methylene)-2-oxo-2,5-dihydro-1,3-thiazol-4-yl]- N,N,O-trimethyl-L-threoninamide

N2-[(5Z)-5-({1-[2,4-bis(trifluoromethyl)benzyl]piperidin-4-yl}methylidene)-2-oxo-2,5-dihydro-1,3-thiazol-4-yl]-N,N-dimethyl-D-alaninamide

(2S)-1-[(5Z)-5-({1-[2,4-bis(trifluoromethyl)benzyl]piperidin-4-yl}methylidene)-2-oxo-2,5-dihydro-1,3-thiazol-4-yl]-N,N-dimethylazetidine-2-carboxamide

1-[(5Z)-5-({1-[2,4-bis(trifluoromethyl)benzyl]piperidin-4-yl}methylidene)-2-oxo-2,5-dihydro-1,3-thiazol-4-yl]-N,N-dimethyl-L-prolinamide

(7Z)-7-({1-[2,4-bis(trifluoromethyl)benzyl]piperidin-4-yl}methylidene)-2,7-dihydro-3H-imidazo[1,2-c][1,3]thiazol-5-one