Michael Addition, 1-Benzoyl-1,5-dihydro-5-(phenylmethyl)-2-[(phenylmethyl)thio]-4H-imidazol-4-one, 2-Benzylidene-1,3-benzodithiole 1,1,3,3-tetroxide, (5S)-1-benzoyl-1,5-dihydro-5-(phenylmethyl)-2-[(phenylmethyl)thio]-5-[(R)-phenyl(1,1,3,3-tetraoxido-2H-1,3-benzodithiol-2-yl)methyl]-4H-Imidazol-4-one, N-[3,5-Bis(trifluoromethyl)phenyl]-3-[[2-[[(8α,9S)-6′-methoxycinchonan-9-yl]amino]-3,4-dioxo-1-cyclobuten-1-yl]amino]-5-(trifluoromethyl)benzamide, Quinine Derivative