Pyranose
Pyranose is a collective term for carbohydrates that have a chemical structure that resembles a pyran ring. This term is derived from the combination of "pyran" and "ose," the latter being a common suffix for sugars. Pyranose forms of various sugars are often found in nature.
Structure[edit | edit source]
The structure of a pyranose sugar is characterized by a six-membered ring consisting of five carbon atoms and one oxygen atom. The carbon atoms are numbered from 1 to 5, with the oxygen atom taking the 6th position. The first carbon atom is attached to a hydroxyl group (-OH), and the remaining carbon atoms are each attached to a hydrogen atom and a hydroxyl group.
Formation[edit | edit source]
Pyranose forms of sugars are created through a process known as ring closure. This occurs when the hydroxyl group on the fifth carbon atom reacts with the carbonyl group on the first carbon atom, forming a hemiacetal. This reaction is reversible, and the equilibrium between the open-chain and pyranose forms of a sugar depends on the specific sugar and the conditions.
Examples[edit | edit source]
Common examples of pyranose sugars include glucose, galactose, and mannose. These sugars exist predominantly in their pyranose forms in aqueous solution.
See also[edit | edit source]
Pyranose Resources | ||
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