(1S,2S,5R,6R)-5-acetoxy-3-(1,4-dimethoxy-5-(methoxymethoxy)naphthalen-2-yl)-4-(hydroxymethyl)-6-methyl-7-oxabicyclo[4.1.0]hept-3-en-2-yl 4-azidobutanoate

(1S,2S,5R,6R)-5-acetoxy-3-(1,4-dimethoxy-5-(methoxymethoxy)naphthalen-2-yl)-4-formyl-6-methyl-7-oxabicyclo[4.1.0]hept-3-en-2-yl 4-azidobutanoate

(1R,2R,5S,6S)-2-acetoxy-5-((4-azidobutanoyl)oxy)-4-(1,4-dimethoxy-5-(methoxymethoxy)naphthalen-2-yl)-1-methyl-7-oxabicyclo[4.1.0]hept-3-ene-3-carboxylic acid

(1aS,2S,10R,10aR)-10-acetoxy-7-hydroxy-3,8-dimethoxy-10a-methyl-9-oxo-1a,9,10,10a-tetrahydro-2H-benzo[6,7]fluoreno[2,3-b]oxiren-2-yl 4-azidobutanoate

(1aS,2S,10R,10aR)-10-acetoxy-3,8-dimethoxy-7-(methoxymethoxy)-10a-methyl-9-oxo-1a,9,10,10a-tetrahydro-2H-benzo[6,7]fluoreno[2,3-b]oxiren-2-yl 4-azidobutanoate