Table 2 ¹H and ¹³C-NMR data for compound 4 (CD₃OD, 500 MHz and 125 MHz)

2

171.3 C

3_a 3_b

44.3 CH₂

3.94 (d, 15.0)

3.63 (d, 15.0)

H-3_a H-3_b

C-5

C-5

5

172.7 C

6

54.2 CH

4.93 (m)

H-7

C-5, C-8

7_a

7_b

26.2 CH₂

3.28 (m)

3.49 (dd, 15.0, 4.0)

H-6, H-7_b

H-6, H-7_a

C-5, C-6, C-8, C-8_a, C-14, C-1″

C-8, C-8_a, C-6

8

109.7 C

8_a

127.4 C

9

118.2 CH

7.61 (dd, 8.5, br.s)

H-10

C-8, C-8_a, C-11, C-12_a

10

118.7 CH

7.03 (m)

H-9

C-8_a, C-12

11

121.4 CH

7.09 (m)

H-12

C-9, C-12_a

12

111.2 CH

7.34 (dd, 8.5, br.s)

H-11

C-8_a, C-10

12_a

136.9 C

14

123.4 CH

7.16 (s)

C-7, C-8, C-8_a, C-12_a

2′

171.5 C

3′_a 3′_b

43.2 CH₂

4.38 (d, 17.0)

3.44 (d, 17.0)

H-3′_b H-3′_a

C-2′, C-4′

C-2′, C-4′

4′

167.9 C

5′

170.7 C

5′_a

122.9 C

6′

114.2 CH

6.99 (d, 3.0)

C-5′, C-7′, C-8′, C-9′_a

7′

153.5 C

8′

118.6 CH

6.90 (dd, 9.0, 2.5)

H-9′

C-6′, C-7′, C-9′_a

9′

122.0 CH

8.19 (d, 9.0)

H-8′

C-5′_a, C-7′

9′_a

129.3 C

10′_c 10′_d

27.4 CH₂

1.88 (m), 2.24 (m)

H-10′_d,10′_a H-10′_c

C-2′, C-10′_a, C-1′′ C-10′_a, C-6′, C-9′_a, C-1′′

10′_a

51.4 CH

4.81 (dd, 8.5, 3.5)

H-10′_c

C-2′

1′′

119.7 C

2′′

12.8 CH₃

2.13 (s)

C-1′′