(1S,6R)-6-<(tert-butyldimethylsilyl)oxy>-1-<(1S,2S)-2,3-O-isopropylidene-2-methyl-1,2,3-trihydroxypropyl>-7,9-bis(p-methoxybenzyl)-5-methylene-7,9-diaza-2-oxabicyclo<4.2.2>decane-8,10-dione
(1S,6R)-6-<(tert-butyldimethylsilyl)oxy>-1-<(1S,2S)-2,3-dihydroxy-2,3-O-isopropylidene-1-(p-methoxybenzyl)-2-methylpropyl>-7,9-bis(p-methoxybenzyl)-5-methylene-7,9-diaza-2-oxabicyclo<4.2.2>decane-8,10-dione
(1S,6R)-6-(tert-Butyl-dimethyl-silanyloxy)-7-(4-methoxy-benzyl)-1-[(S)-(4-methoxy-benzyloxy)-((S)-2,2,4-trimethyl-[1,3]dioxolan-4-yl)-methyl]-5-methylene-2-oxa-7,9-diaza-bicyclo[4.2.2]decane-8,10-dione
(1S,6R)-6-hydroxy-1-<(1S,2S)-2,3-dihydroxy-2,3-O-isopropylidene-1-<(p-methoxybenzyl)oxy>-2-methylpropyl>-7,9-bis(p-methoxybenzyl)-5-methylene-7,9-diaza-2-oxabicyclo<4.2.2>decane-8,10-dione
Benzoic acid 3-[(3S,4S)-3,4,8-trihydroxy-6,9-bis-(4-methoxy-benzyl)-3-methyl-7,10-dioxo-1-oxa-6,9-diaza-spiro[4.5]dec-8-yl]-but-3-enyl ester