methyl (1S,4R,5S,6S)-6-chloro-1-hydroxy-4,5-(isopropylidenedioxy)-3-oxocyclohexanecarboxylate

methyl (1S,2S,3S,4S,5R)-2-chloro-1,5-dihydroxy-3,4-(isopropylidenedioxy)cyclohexanecarboxylate

(1S,3R,4R,5S,6S)-4-(tert-butyldimethylsiloxy)-6-chloro-1,5-dihydroxycyclohexane-1,3-carbolactone

(1S,3R,4S,6R)-4-(tert-butyldimethylsiloxy)-6-chloro-1-hydroxy-5-oxocyclohexane-1,3-carbolactone

(1R,3R,4S)-4-(tert-butyldimethylsiloxy)-1-hydroxy-5-oxocyclohexane-1,3-carbolactone