Title: enoses
Long Title: IUPAC Gold Book - enoses
DOI: 10.1351/goldbook.E02126
Status: current

Definition
Monosaccharides having a carbon–carbon double bond anywhere in the backbone chain. Glycals (term not recommended) designates the enoses that are generated by formal elimination of the hemiacetal hydroxy group and an adjacent hydrogen atom. Thus glycals are cyclic enol ethers. Unsaturated hexoses, for example, are called hexenoses, e.g. the hex-1-enopyranose derived from ᴅ-glucopyranose): 

Related Terms
- Glycals: https://goldbook.iupac.org/terms/view/G02644
- Monosaccharides: https://goldbook.iupac.org/terms/view/M04021
- backbone: https://goldbook.iupac.org/terms/view/B00574
- elimination: https://goldbook.iupac.org/terms/view/E02038
- enol ethers: https://goldbook.iupac.org/terms/view/E02124

Source
- PAC, 1995, 67, 1307. 'Glossary of class names of organic compounds and reactivity intermediates based on structure (IUPAC Recommendations 1995)' on page 1334 (https://doi.org/10.1351/pac199567081307)

Other Outputs
- html: https://goldbook.iupac.org/terms/view/E02126/html
- json: https://goldbook.iupac.org/terms/view/E02126/json
- xml: https://goldbook.iupac.org/terms/view/E02126/xml

Citation: Citation: 'enoses' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. 10.1351/goldbook.E02126
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Accessed: 2026-07-24T05:53:32+00:00