Skip to main content
. 2020 Apr 10;10(2):89–100. doi: 10.1007/s13659-020-00239-z

Table 3.

1H NMR spectroscopic data of compounds 12–15 (600 MHz, δ in ppm)

No 12a 13b 14a 15a
3 2.80, m 2.74, m 2.57, m 2.79, m
4 4.02, overlapped

1.80, ddd (14.2, 2.6, 2.6)

1.64, overlapped

1.81, overlapped

1.75, overlapped

1.85, m

1.72, overlapped
5

1.98, ddd (12.7, 12.7, 3.5)

1.85, overlapped

1.89, ddd (13.8, 3.0, 3.0)

1.61, overlapped

1.78, overlapped

1.62, m

1.95, overlapped

1.74, overlapped
6 1.88, overlapped 1.77, m 1.96, m
7 3.07, br dd (11.3, 8.9) 3.04, br dd (9.8, 9.8) 3.10, br dd (11.7, 8.5) 3.09, dd (9.6, 9.6)
8

1.55, dd (12.3, 8.9)

1.42, dd (12.3, 11.3)

1.51, overlapped

1.38, dd (12.8, 11.8)

1.55, dd (11.7, 11.7)

1.43, dd (11.7, 8.5)

1.65, br dd (13.2, 8.3)

1.57, dd (13.2, 10.7)
10

2.31, d (15.3)

1.93, d (15.3)

2.24, d (15.1)

1.91, d (15.1)

2.21, br d (15.2)

2.06, br d (15.2)

2.31, d (14.8)

1.97, d (14.8)
11

4.11, d (11.3)

3.93, d (11.3)

4.11, dd (11.6, 6.5)

4.01, dd (11.6, 4.5)

4.06, d (11.3)

3.95, d (11.3)

4.03, d (12.0)

4.00, d (12.0)
12

4.01, overlapped

3.84, dd (9.2, 9.2)

4.29, dd (10.5, 7.4)

4.23, dd (10.5, 8.9)

3.73, dd (10.5, 9.0)

3.70, dd (10.5, 7.4)

4.34, dd (10.7, 10.7)

4.19, dd (10.7, 5.7)
13 0.92, d (7.0) 0.82, d (7.0) 0.87, d (7.0) 1.08, s
14 1.08, s 1.06, s 0.89, s 1.10, s
15 0.88, s 0.83, s

3.38, d (10.0)

3.40, d (10.0)

 0.86, s
OAc 2.06, s 2.04, s
11-OH 1.54, dd (6.5, 4.5)

aRecorded in CD3OD

bRecorded in CDCl3