N
X
C
Hal
O
N
S
P Si
Natural
Products
Solvents
C
C
C
C C
C
4.13 Natural Products
159
4.13.4 Steroids
13 C Chemical Shifts (δ in ppm)
O
O
OH
O
H
H
H
HO
23.1
22.5
23.8
22.8
28.5
28.0
40.0
39.6
24.4
24.1
36.7
36.4
36.3
35.4
19.1
18.8
56.8
25.4
81.0
63.3
25.3
56.5
28.7
38.0
30.4
38.8
38.8
28.3
24.6
20.4
23.5
23.0
20.3
24.3
12.6
18.3
11.0
13.0
24.4
17.3
12.0
40.7
40.7
36.8
36.0
40.3
40.0
21.3
20.7
21.0
21.2
20.7
21.2
55.3
43.6
54.3
54.7
54.5
50.5
36.0
36.1
35.8
33.9
35.7
32.3
32.6
27.4
31.9
30.7
32.3
32.0
29.2
26.9
32.5
32.3
28.9
121.3
47.6
40.3
46.9
141.2
36.7
27.2
38.7
38.3
36.1
36.5
12.5
24.1
17.0
17.0
12.0
19.4
39.2
37.6
35.8
35.7
37.6
37.5
22.7
21.2
33.8
32.6
22.0
31.6
27.3
26.8
197.7
197.4
197.8
123.9
124.0
170.1
169.3
26.6
71.3
29.2
26.9
28.9
42.4
57.1
54.5
50.8
56.2
54.9
56.9
43.0
40.7
42.9
43.7
40.6
42.4