(R)-2-((4S,5R)-2,2-dimethyl-5-((S)-3-oxo-1-(9-phenyl-9H-fluoren-9-yl)pyrrolidin-2-yl)-1,3-dioxolan-4-yl)-2-(((trifluoromethyl)sulfonyl)oxy)ethyl acetate

(5S,6S,7S)-7-Acetoxy-5-(benzyloxy)-1-azabicyclo[4.3.0]non-3-en-2-one

2-(1',2'-O-isopropylidene-1',2',3',4'-tetrahydroxybutyl)-3-hydroxy-N-(9-phenylfluoren-9-yl)pyrrolidine

2-<(9-phenylfluoren-9-yl)amino>-2-deoxy-3,4:5,6-di-O-isopropylidene-D-mannitol