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. Author manuscript; available in PMC: 2017 Jul 15.
Published in final edited form as: Bioorg Med Chem Lett. 2016 May 24;26(14):3226–3231. doi: 10.1016/j.bmcl.2016.05.069

Table 2.

NMR Data for 3-O-propyl-2,3-dehydrosilibinin (5) (1H NMR: 300 MHz; 13C NMR: 75 MHz).

Position 3-O-propyl-2,3-dehydrosilibinin (acetone-d6)
δC, type δH, (J in Hz)
2 147.1, C -
3 138.8, C -
4 175.4, C -
4a 105.9, C -
5 163.2, C -
6 99.4, CH 6.25, s
7 165.0, C -
8 94.5, CH 6.52, s
8a 157.8, C -
10 80.0, CH 4.25–4.23, m
11 77.2, CH 5.05, d (7.8)
12a 144.8, C -
13 118.0, CH 7.70, s
14 124.4, C -
15 123.2, CH 7.74, d (8.1)
16 117.7, CH 7.06, d (8.1)
16a 156.2, C -
17 128.9, C -
18 111.9, CH 7.16, s
19 148.6, C -
20 148.1, C -
21 115.8, CH 6.90, d (8.1)
22 121.7, CH 7.00, d (8.1)
23 61.7, CH2 3.80, br.d (12.3)
3.55, br.d (12.3)
graphic file with name nihms792079t1.jpg 74.8, CH2 4.02, t (6.6)
24.0, CH2 1.73, Hex (7.2)
10.8, CH3 0.96, t (7.5)
19-OMe 56.3, CH3 3.95, s
5-OH - 11.67, s
20-OH - 5.79, s
23-OH -