N
X
C
Hal
O
N
S
P Si
Natural
Products
Solvents
C
C
C
C C
C
205 205
N
H
O
O
O
N
S
O
O
S
O
N
H
O
b
b
b
b
b
b
c
c
d
d
d
d
d
d
e
e
e
a
a
a
a
a
a
b
a
b
c
c
c
c
c
c
d
d
a
7.46
7.45
7.51
7.70
7.48
7.71
7.74
7.42
7.57
7.85
7.80
7.46
7.97
8.22
7.57
11.70
7.42
7.96
8.16
7.77
8.32
7.79
7.86
8.27
8.59
8.08
7.35
7.45
7.61
7.36
7.58
7.43
7.27
7.24
8.03
3 J ab 8.5
4 J ac 0.9
5 J ad 0.6
3 J bc 7.3
4 J bd 1.3
3 J cd 7.6
3 J ab 8.0
4 J ac 1.1
5 J ad 0.7
3 J bc 7.2
4 J bd 1.2
3 J cd 8.1
3 J ab 7.7
4 J ac 1.1
5 J ad 0.6
3 J bc 7.5
4 J bd 1.0
3 J cd 7.8
3 J ab 8.4
4 J ac 1.1
5 J ad 0.5
3 J bc 7.1
4 J bd 1.8
3 J cd 8.0
3 J ab 7.7
4 J ac 1.1
5 J ad 0.7
3 J bc 7.5
4 J bd 1.1
3 J cd 7.6
3 J ab 8.9
4 J ac 1.1
5 J ad 0.8
5 J ae 0.9
3 J bc 6.7
4 J bd 1.5
3 J cd 8.4
4 J de -0.5
5 J ae 0.4
3 J bc 8.6
4 J bd 1.0
5 J be 0.4
3 J cd 7.0
4 J ce 1.4
3 J de 8.2
5 J ae 0.7
3 J bc 8.1
4 J bd 1.0
5 J be 0.7
3 J cd 7.2
4 J ce 1.2
3 J de 7.9
S
5.6 Heteroaromatic Compounds