[S(R)]-N-((R)-(3,5-Dimethylphenyl)(5-(diphenylphosphanyl)-9,9-dimethyl-9H-xanthen-4-yl)methyl)-2-methylpropane-2-sulfinamide

[S(R)]-N-[(R)-(furan-2-yl)(5-(diphenylphosphanyl)-9,9-dimethyl-9H-xanthen-4-yl)methyl]-N-methylpropane-2-sulfinamide

[S(R)]-N-[(R)-[3,5-Bis(trifluoromethyl)phenyl][5-(diphenylphosphino)-9,9-dimethyl-9H-xanthen-4-yl]methyl]-2-methyl-2-propanesulfinamide

[S(R)]-N-[(R)-(5-(diphenylphosphanyl)-9,9-dimethyl-9H-xanthen-4-yl)(2-isopropylphenyl)methyl]-2-methylpropane-2-sulfinamide

[S(R)]-N-[(S)-(4-Methoxyphenyl)[5-(diphenylphosphino)-9,9-dimethyl-9H-xanthen-4-yl]methyl]-N,2-dimethyl-2-propanesulfinamide

[S(R)]-N-((R)-(2-tert-butylphenyl)(5-diphenylphosphanyl-9,9-dimethyl-9H-xanthen-4-yl)methyl)-2-methylpropane-2-sulfinamide

[S(R)]-N-((S)-(2-tert-butylphenyl)(5-diphenylphosphanyl-9,9-dimethyl-9H-xanthen-4-yl)methyl)-N,2-dimethylpropane-2-sulfinamide

[S(R)]-N-[(R)-[3,5-Di-tert-butyl-4-methoxyphenyl][5-(diphenylphosphino)-9,9-dimethyl-9H-xanthen-4-yl]methyl]-N,2-dimethyl-2-propanesulfinamide

(R)-N-((S)-(3,5-difluorophenyl)(5-(diphenylphosphanyl)-9,9-dimethyl-9H-xanthen-4-yl)methyl)-N,2-dimethylpropane-2-sulfinamide

[S(R)]-N-[(S)-(5-(diphenylphosphanyl)-9,9-dimethyl-9H-xanthen-4-yl)(2-isopropylphenyl)methyl]-2-methylpropane-2-sulfinamide

[S(R)]-N-[(S)-(5-(diphenylphosphanyl)-9,9-dimethyl-9H-xanthen-4-yl)(2-isopropylphenyl)methyl]-N,2-dimethylpropane-2-sulfinamide

[S(R)]-N-[(R)-[1,1'-biphenyl]-4-yl(5-(diphenylphosphanyl)-9,9-dimethyl-9H-xanthen-4-yl)methyl]-2-methylpropane-2-sulfinamide

[S(R)]-N-((S)-(2-tert-butylphenyl)(5-diphenylphosphanyl-9,9-dimethyl-9H-xanthen-4-yl)methyl)-2-methylpropane-2-sulfinamide

[S(R)]-N-[(R)-[1,1'-biphenyl]-4-yl(5-(diphenylphosphanyl)-9,9-dimethyl-9H-xanthen-4-yl)methyl]-N,2-dimethylpropane-2-sulfinamide

[S(R)]-N-[(S)-(furan-2-yl)(5-(diphenylphosphanyl)-9,9-dimethyl-9H-xanthen-4-yl)methyl]-N-methylpropane-2-sulfinamide

[S(R)]-N-((S)-(3,5-Dimethylphenyl)(5-(diphenylphosphanyl)-9,9-dimethyl-9H-xanthen-4-yl)methyl)-N,2-dimethylpropane-2-sulfinamide

[S(R)]-N-((S)-(2-tert-butylphenyl)(5-diphenylphosphanyl-9,9-dimethyl-9H-xanthen-4-yl)methyl)-N,2-dimethylpropane-2-sulfinamide

[S(R)]-N-((S)-(3,5-Dimethylphenyl)(5-(diphenylphosphanyl)-9,9-dimethyl-9H-xanthen-4-yl)methyl)-N,2-dimethylpropane-2-sulfinamide

[S(R)]-N-[(S)-(furan-2-yl)(5-(diphenylphosphanyl)-9,9-dimethyl-9H-xanthen-4-yl)methyl]-N,2-dimethylpropane-2-sulfinamide

[S(R)]-N-[(R)-[3,5-Di-tert-butyl-4-methoxyphenyl][5-(diphenylphosphino)-9,9-dimethyl-9H-xanthen-4-yl]methyl]-2-methyl-2-propanesulfinamide

(R)-N-((R)-(3,5-difluorophenyl)(5-(diphenylphosphanyl)-9,9-dimethyl-9H-xanthen-4-yl)methyl)-N,2-dimethylpropane-2-sulfinamide

[S(R)]-N-[(S)-[1,1'-biphenyl]-4-yl(5-(diphenylphosphanyl)-9,9-dimethyl-9H-xanthen-4-yl)methyl]-N,2-dimethylpropane-2-sulfinamide

[S(R)]-N-((S)-(3,5-Dimethylphenyl)(5-(diphenylphosphanyl)-9,9-dimethyl-9H-xanthen-4-yl)methyl)-2-methylpropane-2-sulfinamide

[S(R)]-N-[(R)-(furan-2-yl)(5-(diphenylphosphanyl)-9,9-dimethyl-9H-xanthen-4-yl)methyl]-N,2-dimethylpropane-2-sulfinamide