Advertisement

Rotundioside E

Reference work entry

CAS Registry Number: 73548-39-7 Open image in new window

Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Oleanene Type – 16-epi-saikogenin C

Biological source: Bupleurum rotundifolium [1]

C48H78O16: 910.528

Mp: 258–260°C (aq. MeOH) [1]

[α]D20 − 42.2° (c 0.31, MeOH) [1]

UV λmaxMeOH nm (ε): 246 (sh), 252 (43000), 262 (30000) [1]

1H NMR (J/Hz, C5D5N): 5.61 (d, J = 10.0, H-11), 6.56 (d, J = 10.0, H-12), 4.02, 3.66 (ABq, 11.0, H2-28)

β-D-Fucp: 4.04 (d, J = 8.0, H-1)

β-D-Glcp: 4.56 (d, J = 7.0, H-1)

α-L-Rhap: 5.93 (brs, H-1) [1]

13 C NMR (25.15 MHz, C 5D 5N): [ 1]

Table 1

C-1

39.1

C-16

67.7

Fuc-1

105.3

2

26.6

17

45.3

2

78.0

3

89.6

18

133.1

3

76.2

4

39.9

19

38.5

4

72.8

5

55.6

20

32.6

5

70.9

6

18.9

21

35.6

6

17.4

7

32.6

22

24.5

Glc-1

101.8

8

41.1

23

28.2

2

79.5

9

53.9

24

16.3

3

77.2

10

36.6

25

18.3

4

72.8

11

126.2

26

17.4

5

77.2

12

126.2

27

21.8

6

63.3

13

136.0

28

64.8

Rha-1

102.2

14

41.9

29

25.1

2

72.8

15

31.9

30

32.6

3

72.8

       

4

References

  1. 1.
    Y. Kobayashi, T. Takeda, Y. Ogihara, Chem. Pharm. Bull. 29(8), 2222 (1981)CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 2013

Personalised recommendations