Carbohydrates Flashcards
formula for carbs
(CH2O)n
d-glucose
draw
number of possibilities for five carbon aldoses
2^3 bc 3 chiral centers
number of possibilities for six carbon aldoses
2^4 bc 4 chiral centers
number of possibilities for five carbon ketoses
2^2 bc 2 chiral centers
number of possibilities for six carbon ketose
2^3 bc 3 chiral centers
d and l versions of a sugar are ______
enantiomers
what stereocenters are flipped between D and L sugars
all stereocenters
what is flipped with epimers
just one chiral center
result from ring clsoing with aldehyde
hemiacetal
result from ring closing with ketone and alc
hemiketal
anomeric carbon
carbon that contect bottom and top of fischer projection
where is the OH group in alpha
below ring
where is the OH group in beta
on top of ring
in solution what conformation is most glucose in
ring conformation
what is reveresed for l sugars
alpha beta
where does ring closure create an additional stereocenter
anomeric carbon
why is most d-glucose in the beta form
sterics
