Benzoic acid (R)-1-[(4S,5R)-3-(tert-butyl-diphenyl-silanyloxymethyl)-4-methyl-4,5-dihydro-isoxazol-5-yl]-ethyl ester

(4R,5S)-3-[(R)-2-(tert-Butyl-dimethyl-silanyloxy)-1-methyl-ethyl]-5-[(S)-1-(tert-butyl-diphenyl-silanyloxy)-ethyl]-4-methyl-4,5-dihydro-isoxazole

5-((R)-2-{(4R,5S)-5-[(S)-1-(tert-Butyl-diphenyl-silanyloxy)-ethyl]-4-methyl-4,5-dihydro-isoxazol-3-yl}-propylsulfanyl)-1-phenyl-1H-tetrazole