Fig. 4
From: Too sweet: cheminformatics for deglycosylation in natural products
a 1,5′-bis(hydroxymethyl)dihydro-3′H-2,5,10-trioxaspiro[bicyclo[5.2.1]decane-4,2′-furan]-3′,4′,8,9-tetraol, in red a detected furanose attached to another cycle by a spiro carbon (attachment point inside the blue circle). b Remaining structure after removal of the sugar with preservation of the spiro carbon