. Author manuscript; available in PMC: 2016 May 25.

Published in final edited form as: J Nat Prod. 2015 May 22;78(6):1271–1276. doi: 10.1021/acs.jnatprod.5b00065

Table 1.

¹H NMR Spectroscopic Data for Compounds 1–7 in CDCl₃.

position	1	2	3	4	5	6	7
position	δ_H (J in Hz)	δ_H (J in Hz)	δ_H (J in Hz)	δ_H (J in Hz)	δ_H (J in Hz)	δ_H (J in Hz)	δ_H (J in Hz)
2	6.11, s	6.15, s	6.12 s	6.12 s	6.23, s	6.25, s
4	6.27, s	6.24, s	6.30 s	6.27, s	6.15, s	6.25, s	6.25, s
6a	1.81, m	1.80, m	1.85, m	1.85, m	1.75, dt (10.6, 3.6)	1.85 m	1.62 m
7	2.41, m	2.41, m	2.10, m	2.38, m	1.86, m	1.56, m	1.94, m 1.35, m
8	4.10, d (4.8)	4.31, bt	5.68, d (5.6)	5.62, bs	2.21, m	1.82, m	2.26, m
10	6.66, bs	6.54, bs	4.27, d (8.4)	5.08, d (2.4)	4.22, d (8.8)	3.88, bs	6.79, s
10a	3.11, d (11.2)	3.30, d (10)	2.77, t (8.1)	2.70, m	2.69, t (10.2)	2.79, d (12.0)	3.27, m
11	1.80 s	1.76 s	1.76 s	1.84 s	5.10 bs	1.36 s	4.48 s
					4.94 bs
12	1.42, s	1.39, s	1.37, s	1.40, s	1.35, s	1.39, s	1.45, s
13	1.09, s	1.09, s	1.04, s	1.11, s	1.01, s	1.03, s	1.11, s
1′	2.41, dd (6.4, 8.4)	2.41, dd (6, 8.4)	2.42, m	2.40, m	2.43, dd (8.4, 6.0)	2.44, m	2.93, m
2′	1.55, m	1.54, m	1.55, m	1.55, m	1.56, m	1.54, m	1.58, m
3′	1.29, m	1.29, m	1.29, m	1.29, m	1.30, m	1.31, m	1.23, m
4′	1.29, m	1.29, m	1.29, m	1.29, m	1.30, m	1.31, m	1.23, m
5′	0.87, t (6.8)	0.87, t (7.1)	0.89, t (6.8)	0.89, t (6.8)	0.87, t (6.4)	0.88, t (6.8)	0.89, t (6.9)
OCOCH₃							2.07, s