(1S,3R,5R,8R)-8-benzyloxycarbonyl-7-tert-butoxycarbonyl-8-((S)-((S)-cyclohex-2-enyl)(hydroxy)methyl)-3-methoxy-1-methyl-2-oxa-7-azabicyclo[3.3.0]octane-6-one

(3R,4S,5R,6R)-5-(2-(benzyloxy)ethyl)-4-hydroxy-6-methoxytetrahydro-2H-pyran-3-yl 4-methylbenzenesulfonate

(3R,5S,6R)-5-(2-(benzyloxy)ethyl)-6-methoxy-4-oxotetrahydro-2H-pyran-3-yl 4-methylbenzenesulfonate