(1S,2R,3S,4R,4aS,11bR)-4-benzylamino-1,2,3-trihydroxy-2,3,4,4a,6,11b-hexahydro-1H-5,8,10-trioxa-cyclopenta[b]phenanthrene-6-one

(1R,4R,5S,6R)-4,5-(isopropylidenedioxy)-7-(4'-methylphenylsulfonyl)-7-azabicyclo<4.1.0>hept-2-ene

(1R,4S,5S,6R)-3-bromo-4,5-(isopropylidenedioxy)-7-(4'-methylphenylsulfonyl)-7-azabicyclo<4.1.0>hept-2-ene

(1bS,2aR,2bS,5aS)-4,4-dimethyl-2-tosylhexahydro-2H-[1,3]dioxolo[4',5':3,4]oxireno[2',3':5,6]benzo[1,2-b]azirine

(1S,2R,3S,4R,4aS,11bR)-4-benzylamino-1-(tert-butyloxycarbonyloxy)-2,3-(isopropylidenedioxy)-2,3,4,4a,6,11b-hexahydro-1H-5,8,10-trioxa-cyclopenta[b]phenanthrene-6-one