121445-49-6
(3S,5R,6S,9R)-3-[(1S)-1-hydroxy-2-phenylethyl]-9-methyl-6-(1-methyl-1-phenylethyl)-1,4-dioxaspiro[4.5]decan-2-one
→
121445-51-0
ethyl (2S,3R)-3-azido-2-hydroxy-4-phenylbutanoate