N
X
C
O
N
S
Hal
Solvents
Natural
Products
P Si
C
C
C C
C
C
114
4 13 C NMR
4.6.2 Coupling Constants
13 C- 1 H Coupling Constants (| 1 J| in Hz)
13 C- 13 C Coupling Constants (| 1 J| in Hz)
S
N
N
N
H
N
N
H
O
O
N
H
N
H
N
N
H
1 J C a H a
175
1 J C b H b
202
1 J C a C b
69.1
1 J C a H a
186
1 J C b H b
177
1 J C a H a
161
1 J C b H b
163
1 J C c H c
178
1 J C a C b
53.7
1 J C b C c
54.3
1 J C a H a
169
1 J C b H b
183
1 J C a C b
65.6
1 J C a H a
194
1 J C a H a
209
1 J C a H a
206
1 J C b H b
189
1 J C a C b
64.2
a
a
a
a
a
a
a
b
b
b
c
c
a
a
a
a
a
b
b
b
b
b
b
b
N
N
N
H
N
N