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. Author manuscript; available in PMC: 2020 Jan 31.
Published in final edited form as: J Nat Prod. 2017 Jun 15;80(7):1981–1991. doi: 10.1021/acs.jnatprod.6b01129

Table 3.

13C NMR Data (100 MHz) of Withanolides 1–11 in CDCl3a

position 1 2 3 4 5 6 7 8 9 10 11
1 203.8 C 204.1 C 203.3 C 211.0 C 203.5 C 202.9 C 202.8 C 203.7 C 209.9 C 204.2 C 203.0 C
2 129.2 CH 127.9 CH 129.3 CH 39.8 CH2 129.4 CH 129.8 CH 130.0 CH 127.9 CH 39.6 CH2 128.0 CH 129.9 CH
3 144.7 CH 145.3 CH 144.3 CH 126.8 CH 144.3CH 143.6 CH 143.5 CH 144.9 CH 123.9 CH 145.3 CH 143.7 CH
4 33.0 CH2 33.4 CH2 33.0 CH2 129.2 CH 33.0 CH2 32.9 CH2 32.8 CH2 32.8 CH2 128.6 CH 33.5 CH2 32.8 CH2
5 62.1 C 135.2 C 62.1 C 141.0 C 61.9 C 62.2 C 62.2 C 136.3 C 141.6 C 135.1 C 62.1 C
6 64.0 CH 124.8 CH 63.2 CH 121.9 CH 64.0 CH 64.1 CH 63.8 CH 129.8 CH 130.7 CH 125.0 CH 64.1 CH
7 26.3 CH2 25.3 CH2 30.9 CH2 25.8 CH2 26.2 CH2 26.3 CH2 26.0 CH2 65.9 CH 66.3 CH 25.3 CH2 26.2 CH2
8 34.0 CH 35.1 CH 28.5 CH 35.6 CH 32.3 CH 34.1 CH 31.2 CH 45.1 CH 44.4 CH 35.3 CH 34.1 CH
9 36.9 CH 36.3 CH 44.9 CH 34.1 CH 37.4 CH 36.7 CH 37.0 CH 34.4 CH 33.3 CH 36.2 CH 36.8 CH
10 48.5, C 50.8 C 48.5 C 52.4 C 48.5 C 48.6 C 48.6 C 50.2 C 52.0 C 50.7 C 48.6 C
11 23.2 CH2 22.1 CH2 23.4 CH2 21.7 CH2 22.4 CH2 22.7 CH2 21.8 CH2 22.8 CH2 21.6 CH2 22.2 CH2 22.9 CH2
12 30.0 CH2 32.5 CH2 36.0 CH2 32.3 CH2 32.1 CH2 30.1 CH2 28.4 CH2 30.2 CH2 30.0 CH2 32.3 CH2 30.4 CH2
13 54.2 C 47.4 C 46.9 C 54.6 C 47.6 C 54.8 C 52.3 C 54.8 C 54.9 C 47.3 C 54.7 C
14 83.2 C 84.6 C 58.1 CH 83.7 C 84.9 C 82.1 C 84.5 C 81.7 C 81.4 C 84.4 C 81.9 C
15 32.5 CH2 32.0 CH2 30.9 CH2 31.6 CH2 32.5 CH2 32.3 CH2 39.9 CH2 34.9 CH2 34.6 CH2 32.2 CH2 32.4 CH2
16 37.6 CH2 20.9 CH2 126.9 CH 37.7 CH2 21.3 CH2 37.8 CH2 124.3 CH 37.6 CH2 37.7 CH2 20.8 CH2 37.8 CH2
17 88.3 C 49.4 CH 158.9 C 88.3 C 49.0 CH 88.1 C 156.4 C 86.7 C 86.9 C 49.8 CH 87.7 C
18 20.6 CH3 17.4 CH3 17.9 CH3 20.6 CH3 17.5 CH3 20.4 CH3 20.6 CH3 20.5 CH3 20.5 CH3 17.7 CH3 20.6 CH3
19 15.2 CH3 18.9 CH3 14.9 CH3 20.2 CH3 15.2 CH3 14.6 CH3 14.2 CH3 18.5 CH3 19.9 CH3 18.9 C 14.5 CH3
20 78.5 C 77.5 CH 76.7 C 79.0 C 77.1 C 79.5 C 74.7 C 78.6 C 78.6 C 77.2 C 79.2 C
21 19.3 CH3 20.2 CH3 23.1 CH3 19.0 CH3 24.1 CH3 19.3 CH3 22.41 CH3 19.1 CH3 19.2 CH3 20.8 CH3 17.2 CH3
22 72.3 CH 75.2 CH 74.6 CH 72.6 CH 85.6 CH 82.4 CH 79.4 CH 80.7 CH 80.5 CH 76.7 CH 78.9 CH
23 31.9, CH2 28.8 CH2 27.3 CH2 29.9 CH2 67.1 CH 66.4 CH 29.8 CH2 34.3 CH2 34.3 CH2 81.4 CH 33.2 CH2
24 38.1 CH 38.1 CH 37.9 CH 38.1 CH 151.7 C 153.4 C 149.3 C 151.3 C 151.2 C 37.2 CH 31.8, CH
25 37.7 CH 37.7 CH 37.9 CH 37.8 CH 121.9 C 121.1 C 127.6 C 121.1 C 121.2 C 49.6 CH 40.7 CH
26 180.8 C 180.4 C 180.3 C 180.8 C 164.1 C 164.2 C 165.2 C 167.2 C 167.0 C 177.8 C 175.4 C
27 10.5 CH3 10.5 CH3 10.5 CH3 10.6 CH3 12.9 CH3 12.8 CH3 12.4 CH3 12.1 CH3 12.2 CH3 14.3 CH3 14.4 CH3
28 72.5 CH2 72.2 CH2 72.4 CH2 73.0 CH2 15.7 CH3 15.5 CH3 22.4 CH3 20.6 CH3 20.6 CH3 63.2 CH2 21.4 CH3
a

Assignments based on DEPT, HSQC, and HMBC data.

b

Assignments are interchangeable.