Cyclic Structure for Glucoses Glucose cyclic hemiacetal formed by reaction of -CHO with -OH on C5. CHO H3/ -OH -H CHOH H CHOH H H -O OH OH CH OH O H O+ H H OH H Hy+H 一OH H 4KòH HO 2 HO 3 H CH,OH OH H OH OH Fischer projection on right side C6 rotated up Haworth projection H 6 H CHOH CI is the only carbon atom CHOH HO bonded to 2 oxygens HO -0 HO H HO、 H 3 OH OH 0 OH TH H OH chair conformation (all substituents equatorial) chair conformation (OH on Cl axial) Copyright 2005 Pearson Prentice Hall,Inc. Chapter 23 D-glucopyranose 9 Chapter 23 9 Cyclic Structure for Glucose Glucose cyclic hemiacetal formed by reaction of -CHO with -OH on C5. => D-glucopyranose