Term: enoses https://doi.org/10.1351/goldbook.E02126 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 d-glucopyranose): E02126.png Related Terms: 1) monosaccharides (http://doi.org/10.1351/goldbook.M04021). 2) enol ethers (http://doi.org/10.1351/goldbook.E02124). 3) backbone (http://doi.org/10.1351/goldbook.B00574). 4) glycals (http://doi.org/10.1351/goldbook.G02644-1). 5) elimination (http://doi.org/10.1351/goldbook.E02038). 6) glycals (http://doi.org/10.1351/goldbook.G02644-2). Image: Not defined (https://goldbook.iupac.org/img/inline/E02126.png) 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) Citation: 'enoses' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.E02126 License: The IUPAC Gold Book is licensed under Creative Commons Attribution-ShareAlike CC BY-SA 4.0 International (https://creativecommons.org/licenses/by-sa/4.0/) for individual terms. Disclaimer: The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using.