Table 3 ¹H NMR (400 Hz) data of compounds 5–10 in CDCl₃ (δ in ppm, J in Hz).

1

4.90, dd (12.3, 3.5)

1.75, m

1.57, m

2.36, m

2.35, m

2.21, m

2

α 1.55, m; β 1.24, m

α 1.64, m; β 1.31, m

β 1.51, m; α 1.32, m

a 1.50, m; b 1.34, m

β 1.85, m; α 1.44, m

β 1.53, m; α 1.21, m

3

a 2.01, m; b 1.80, m

α 1.95, m; β 1.80, m

a 2.12, dd (15.7, 10.0); b 1.76, m

1.82, m

β 1.79, m; α 1.67, m

1.89, m

5

4.45, d (7.1)

2.10, m

2.51, m

5.31, s

5.58, s

5.67, d (1.6)

6

0.93, t (7.8)

α 1.91, m; β 1.72, m

a 1.89, m; b 1.28, m

—

—

—

7

0.57, m

β 1.46, m; α 1.38, m

β 2.52, m; α 2.31, dd (13.6, 9.9)

1.49, m

1.62, m

1.67, m

8

α 1.90, m; β 1.00, m

—

—

α 1.80, m; β 1.61, m

α 1.70, m; β 1.61, m

1.65, m

9

β 1.95, m; α 1.88, m

2.16, m

2.63, dd (18.1, 9.1)

β 1.78, m; α 1.30, m

β 1.85, m; α 1.33, m

β 1.67, m; α 1.33, m

10

—

α 1.51, m; β 1.32, m

1.73, m

1.94, m

1.94, m

1.83, m

11

—

—

—

1.81, m

1.81, m

1.74, m

12

α 1.17, s

α 0.97, s

α 0.96, s

0.78, d (6.5)

0.65, d (6.6)

0.75, d (6.1)

13

β 1.23, s

β 0.99, s

β 0.99, s

0.90, d (6.4)

0.89, d (6.9)

0.91, d (6.0)

14

1.08, s

a 1.59, d (12.8); b 1.39, d (12.8)

1.05, s

0.82, d (7.0)

0.85, d (7.2)

0.86, d (6.7)

15

1.13, s

0.84, s

4.89, s 4.81, s

β 2.23, dd (14.2, 7.0); α 2.13, dd (14.2, 9.4)

α 2.32, dd (14.0, 6.9); β 2.02, dd (14.0, 9.8)

1.34, s

1′

3.78, s

3.76, d (8.1)

4.34, d (6.1)

4.08, t (8.1)

4.17, t (8.5)

3.49, d (11.6)

9′/13′

7.33, m

7.13, d (7.0)

7.11, d (7.4)

7.15, d (7.3)

7.16, d (7.5)

7.13, d (7.0)

10′/12′

7.25, m

7.26, t (7.0)

7.26, m

7.27, t (7.0)

7.29, t (7.0)

7.28, t (7.0)

11′

7.15, t (7.0)

7.29, t (7.0)

7.22, m

7.20, t (7.0)

7.21, t (7.0)

7.22, t (7.0)

14′

10.19, s

10.09, s

10.10, s

10.04, s

10.04, s

10.04, s

15′

10.07, s

10.08, s

10.15, s

10.13, s

10.13, s

10.08, s

5′-OH

13.74, s

13.48, s

13.63, s

13.53, s

13.51, s

13.54, s

7′-OH

13.05, s

13.11, s

13.20, s

13.18, s

13.18, s

13.07, s