Biochemistry 2280A Lecture Notes - Lecture 7: Mannose, Stereochemistry, Galactose

• School: Western University
• Department: Biochemistry
• Course: Biochemistry 2280A
• Professor: Bonnie Mac Lachlan

Document Summary

Monosaccharaides: general formula (ch2o)n, monosaccharaides are the basic unit, hydrated carbons. Prefix tells you how many carbons: each carbon is usually bonded to an o, they have chiral carbons non superimposable (tetrahedral) Represented by fischer projections (the sides are coming at you the top and bottom going away) There are two different arrangements: d: oh on the right, l: oh is on the left. Some hexoses: have 6 carbons, most monosaccharaides are d. 1 carbon is always the carbon attached the carbon closest to the carbon attached to the double bonded o. Every carbon has a o or oh, or one carbon has two bonds to oxygen (special) Look at highest number chiral carbon, what ever side the oh is on this is either d or l. D sugars are far more common (all the sugars in the course are d: epimers differ in stereochemistry at only one carbon (glucose and galactose)