Glycal
![Glucal, the glycal formed from glucose](/Images/godic/202501/15/Glucal4048.png")
![Some available methods to synthesize glycals](/Images/godic/202501/15/Literature_Glycal_Syntheses4048.png")
Glycal is a name for cyclic enol ether derivatives of sugars having a double bond between carbon atoms 1 and 2 of the ring. The term “glycal” should not be used for an unsaturated sugar that has a double bond in any position other than between carbon atoms 1 and 2.