(3S,4R)-N-(2-anilinoethyl)-3-hydroxy-2,2-dimethyl-4-[(3-methylphenyl)sulfonylamino]-N-phenyl-3,4-dihydrochromene-6-carboxamide;(3S,4R)-N-(1-benzylpyrrolidin-3-yl)-N-ethyl-3-hydroxy-2,2-dimethyl-4-[(3-methylphenyl)sulfonylamino]-3,4-dihydrochromene-6-carboxamide;N-[(3S,4R)-6-[(2S)-2-[(2,6-dimethylanilino)methyl]pyrrolidine-1-carbonyl]-3-hydroxy-2,2-dimethyl-3,4-dihydrochromen-4-yl]-3-methylbenzenesulfonamide;(3S,4R)-N-ethyl-N-(2-fluorophenyl)-3-hydroxy-2,2-dimethyl-4-(methylamino)-3,4-dihydro-1H-quinoline-6-carboxamide