N
X
C
O
N
S
Hal
Solvents
Natural
Products
P Si
C
C
C C
C
C
158
4 13 C NMR
158
4 13 C NMR
N
NH
O
O
O
HO
OH OH
H 3 C
N
NH
O
O
O
HO
OH
H 3 C
NH
N
N
N
O
O
HO
OH
NH 2
NH
N
N
N
O
O
HO
OH OH
NH 2
N
N
N
N
NH 2
O
HO
OH
N
N
N
N
NH 2
O
HO
OH OH
167.2 a , 163.6 b
167.2
152.4 a , 150.4 b
152.6
136.0 b , 138.3 a
138.2
109.3 b , 112.2 a
112.3
120.1 b , 119.6 a
117.7 b , 119.7 a
155.5 a , 156.9 b
156.1 a , 157.9 b
152.1 a , 153.2 b
153.0 a , 154.7 b
140.7 b , 141.4 a
136.4 b , 141.1 a
149.0 a , 149.8 b
149.0 a , 151.9 b
12.3
85.9 a , 83.7 b
88.9 a , 88.8 b
85.5 a , 83.8 b
89.9
87.5
84.8
87.2 b , 87.3 a
86.6 b , 86.3 a
88.7 b , 88.3 a
85.0
86.3
88.0
61.3 b , 62.0 a
62.4 b , 62.0 a
62.8 b , 62.6 a
61.6
62.5
62.5
39.4 a , 39.5 b
74.3 a , 74.3 b
40.0 a , 39.7 b
74.2
74.8
39.6
70.4 b , 71.3 a
12.1 b , 12.3 a
71.4 b , 71.1 a
71.8 b , 72.1 a
70.2
71.4
72.0
( a in D 2 O, b in DMSO)
( a in D 2 O, b in DMSO)
( a in D 2 O, b in DMSO)
(in D 2 O)
157.8
159.7
154.7
154.6
152.3
152.0
117.7
117.4
136.7
138.5
(in DMSO)
(in D 2 O)