(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

(1R,2S,5S,6R)-3,6-dibromo-1,2-O-isopropylidenecyclohex-3-ene-1,2,5-triol

(3aS,4S,5R,7aS)-5-Azido-7-bromo-2,2-dimethyl-3a,4,5,7a-tetrahydro-benzo[1,3]dioxol-4-ol

(1aR,3aS,6aS,6bR)-3-Bromo-5,5-dimethyl-1a,3a,6a,6b-tetrahydro-4,6-dioxa-1-aza-cyclopropa[e]indene-1-carboxylic acid methyl ester