Cyclic Structure for Fructoses Cyclic hemiacetal formed by reaction of C=O at C2 with -OH at C5. CH2OH 2C=0 H HO3-H HO-CH2Q: -H HOCH2O OH HO H 5K HO 一OH H4 CH2OH H43 CH2OH H-5-OH OH H OH H cyclic form 6CHOH D-fructose D-fructofuranose Copyright 2005 Pearson Prentice Hall,Inc. => Chapter 23 10Chapter 23 10 Cyclic Structure for Fructose Cyclic hemiacetal formed by reaction of C=O at C2 with -OH at C5. => D-fructofuranose