Monosaccharides also occur in a furanose form. Furanose forms can be more difficult to work with because the ring is analogous to cyclopentane—i.e. they have a greater number of conformations that must be taken into account than the pyranose type. If a furanose pictured below has more than one name, then the less-used name is written below in smaller print.
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| The furanose and pyranose forms of D-glucose The furanose form of D-glucose has not been isolated |
Several Furanose Monosaccharides
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| apiose 3-C-hydroxymethyl-D-glycero-tetrofuranose (of parsley) |
deoxy ribose 2-deoxy-β-D-erythro-pentofuranose |
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| blastmycinone (of blastmycin) |
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