| pyranose | <chemical> Sugar structure in which the carbonyl carbon is condensed with a hydroxyl group (i.e. In a hemi acetal link), forming a ring of five carbons and one oxygen. most hexoses exist in this form, although in sucrose, fructose is found with the smaller (four carbon) furanose ring. (18 Nov 1997) |
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| pyranose ring | <chemistry> A six-membered cyclic haemiacetal or ketal. (09 Jan 1998) |
| pyranose |
any sugar containing a pyran ring structure, a cyclic form that ketoses and aldoses may take in solution. See also individual sugars, e.g., glucopyranose.
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