| furan | A cyclic compound found, usually in saturated form, in those sugars with an oxygen bridge between carbon atoms 1 and 4, or 2 and 5, or 3 and 7, for which reason they are known as furanoses. (05 Mar 2000) |
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| furanose | <biochemistry> A simple sugar that contains a furan ring (a monocyclicether ring with four carbons and one oxygen atom). (09 Oct 1997) |
| furanose ring | <chemistry> A five-membered cyclic haemiacetal or hemiketal of a carbohydrate. (09 Jan 1998) |