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):
Source:
PAC, 1995, 67, 1307
(Glossary of class names of organic compounds and reactivity intermediates based on
structure (IUPAC Recommendations 1995))
on page 1334
