What is the stereochemistry of the alpha carbons on the polypeptide? The first one (on the N-terminal side) is S but what about the second one? I assigned first priority to the NH, but then I assigned second priority to the carbon double bonded to oxygen and single bonded to N. Does this not have higher priority than simply bonded to sulfur or?

Organic Chemistry
9th Edition
ISBN:9781305080485
Author:John E. McMurry
Publisher:John E. McMurry
Chapter4: Organic Compounds: Cycloalkanes And Their Stereochemistry
Section4.4: Conformations Of Cycloalkanes
Problem 11P: Two conformations of cis-l, 3-dimethylcyclobutane are shown. What is the difference between them,...
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What is the stereochemistry of the alpha carbons on the polypeptide? The first one (on the N-terminal side) is S but what about the second one? I assigned first priority to the NH, but then I assigned second priority to the carbon double bonded to oxygen and single bonded to N. Does this not have higher priority than simply bonded to sulfur or?

:öH
HC
'
H3 N - C
1.
-
:0:
e
:0:
C-
||
:0:
CH₂
:ZI
CH₂
-0111111
/
:0:
H2C H
|
:S:
:S:
|
C
=。
||
: 0:
C
CHz H
HC
||
대
CH
C
:ZH
H₂C
J
H
°C - N
HN:
C.III 4
- C
c=6.
CH ₂
1
||
:0:
Transcribed Image Text::öH HC ' H3 N - C 1. - :0: e :0: C- || :0: CH₂ :ZI CH₂ -0111111 / :0: H2C H | :S: :S: | C =。 || : 0: C CHz H HC || 대 CH C :ZH H₂C J H °C - N HN: C.III 4 - C c=6. CH ₂ 1 || :0:
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