glucofuranosa
Glucofuranose is the five-membered ring form (furanose) of the monosaccharide D-glucose. In this form, the sugar cyclizes by reaction of the aldehyde group at carbon 1 with the hydroxyl group on carbon 4, producing a cyclic hemiacetal in which the ring consists of four carbons and one oxygen, a tetrahydrofuran ring. There are two anomeric configurations, alpha-D-glucofuranose and beta-D-glucofuranose, distinguished by the orientation of the substituent at the anomeric carbon.
Occurrence and distribution: In aqueous solution, glucopyranose, the six-membered ring form, is the dominant form of
Interconversion and chemistry: The ring forms interconvert with the open-chain aldehyde form, allowing transition between five-
Significance: Glucofuranose is mainly of interest in carbohydrate chemistry as a reference point for conformational analysis