Quiz 5 Flashcards
Stereoisomers:
Compounds which have the same atom connections (i.e. bonds), but different spatial arrangements
A compound must be
chiral (i.e. contain at least one chiral C) to have stereoisomers
chiral carbon
C with 4 different atoms or substituents attached to it
chirality ≡
handedness
stereoisomers with one chiral center are called
enantiomers (mirror images)
enantiomers have
the same physical properties but may have slightly different reactivity, especially in biological systems
• stereoisomers with multiple chiral carbons
may have different physical properties
some drugs must be
enantiomerically pure
Respiration
C6H12O6 + 6 O2 -> 6 CO2 + 6 H2O
Photosynthesis
6 CO2 + 6 H2O-> C6H12O6 + 6 O2
Monosaccharides:
“simplest” carbohydrates
O/C ratio
= 1 (O attached to every C!)
H/C ratio
= 2 (saturated)
glucose & galactose
– both aldohexoses; differ only by stereochemistry
fructose & sorbose
– both aldohexoses; differ only by stereochemistry
C6H12O6
Sugar (glucose)
