nte 7. D-glucose, blood sugar, exists in two forms; ring open and ring closed. Don’t worry about the chemistry of ring closure (but FYI, arrows are pointing at the atoms involved in this cyclization). This is an example of a problem that has all kinds of irrelevant information that you have to ignore as you search for the actual question. Consider the ring open form of D-Glucose What is the absolute configuration at C-3?How many stereoisomers does the ring open form of D-glucose have? Using Fischer projections, draw its enantiomer and one diastereomerlow many stereoisomers does the ring closed form shown below have? Ring open form KC-l has'y'stereocenters # stereo1somers =? Ring Closed form has s steieo centers :n=5 CHO extract c-3 H- : # steeolsomerj = 2: 32 possble stereoisomeS 2 -OH C-3 = 16 HOH2C HO -H Using Ch 17 Chemistry HO но- 4 OH HO H- 5 DH H- -OH Ring closed B-D-glucose enantiomer of above will have oPP-. Confiq at ench Stereocenter CH2OH O diustereomerof ing open d-gweose reeds to have the same config * and opp config at one or more * ;. numenous eurrect answers Fischer Projection of ring open form of D-Glucose (blood sugar) Will see in chapter 24 g t one ormore CHO C-3 has an s confiquratoon HO CHO HoA + opp here HoH HO Diast. MO + same •H 3.

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter7: Molecular Structures

Section: Chapter Questions

Problem 66QRT

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Organic Chemistry 1

Here is the professor's solution to the problem. However, I do NOT understand the solution. Please explain the answer in a clear step-by-step fashion to me. Explain the answer provided in the image in a clear fashion and as if I did not know much about organic chemistry. It seems to me like the professor is making the problem more complicated than it has to be. Can you demystify or simplify this problem about D glucose?

How can you assign priorities on a Fischer projection? I don't get it.

Here is the complete solution. Please explain it in a basic way.

7. D-glucose, blood sugar, exists in two forms; ring open and ring closed. Don't worry
about the chemistry of ring closure (but FYI, arrows are pointing at the atoms involved in
this cyclization). This is an example of a problem that has all kinds of irrelevant
information that you have to ignore as you search for the actual question. Consider the
ring open form of D-Glucose What is the absolute configuration at C-3? How many
stereoisomers does the ring open form of D-glucose have? Using Fischer projections,
draw itsenantionmer and on diastereomerlow many stereoisomers does the ring closed
form shown below have?
Ring open form
Ring Closed Sorm has s
steieo centers :n²5
: # sleeo1s omerg = 2°c 32
KC-l
has'4 'stereocenters
CHO
* stereoisomers = 2"
extract
C-3 H-
OH
C-3
= 16
possable
stereoisomanS
HOH2C
Но-
at
H
Using Ch 17
Chemistry
4
HO
но-
LOH
H-
-OH
5
OH
H-
-OH
Ring closed B-D-glucose
enantomer
of above
will have opP.
ČH2OH
O deustereomerof
Miny open d-gweose
reed's to havethe
same config t one ormore
* and opp eonfig at one
or more ;. numenous
currect answers
Fischer Projection of ring open confia at ench
form of D-Glucose (blood sugar)
Will see in chapter 24
Sterebcenter
CHO
c-3 has
an s confiquration
Hot
HO-
CHO
Ho
n+ opp heve , Diast.
HO
MO
HoH
on
+ Same
2.
3.

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