Table 3 ¹H NMR and ¹³C NMR for compound 8 and gymnastatin H in CDCl₃ (δ in ppm, J in Hz).

1a

3.71, m

64.4, CH₂

172.3, C

1b

3.61, dd (5.2, 10.8)

2

4.22, m

53.3, CH

4.97, dt (7.8, 5.8)

53.3, CH

3

2.82, d (6.0)

36.2, CH₂

a 3.06, dd (14.1, 5.8)

37.3, CH₂

b 3.13, dd (14.1, 5.8)

4

—

129.1, C

—

127.8, C

5/9

7.06, d (8.0)

130.2, CH

6.97, d (8.5)

130.5, CH

6/8

6.78, d (7.6)

115.6, CH

6.74, d (8.5)

115.5, CH

7

—

154.8, C

—

154.8, C

10

5.86, d (7.6)

—

5.94, d (7.8)

—

11

—

167.6, C

—

166.2, C

12

5.71, d (15.2)

117.2, CH

5.73, d (15.3)

117.1, CH

13

7.23, d (15.2)

147.1, CH

7.24, d (15.3)

147.2, CH

14

—

130.8, C

—

130.9, C

15

5.64, d (9.6)

148.2, CH

5.64, d (9.8)

148.2, CH

16

2.49, m

33.2, CH

2.51, m

33.2, CH

17a

1.27, m

37.2, CH₂

1.26, m

37.3, CH₂

17b

1.33, m

1.33, m

18

1.24, m

27.5, CH₂

1.22, m

27.5, CH₂

19

1.24, m

29.3, CH₂

1.22, m

29.4, CH₂

20

1.24, m

29.7, CH₂

1.23, m

31.8, CH₂

21

1.24, m

29.6, CH₂

1.25, m

22.7, CH₂

22

1.24, m

31.9, CH₂

0.88, t (6.7)

14.1, CH₃

23

1.33, m

22.7, CH₂

1.75, s

12.5, CH₃

24

0.88, t (6.4, 13.6)

14.1, CH₃

0.97, d (6.6)

20.6, CH₃

25

1.74, s

12.5, CH₃

—

—

26

0.97, d (6.8)

20.5, CH₃

—

—