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Cynarasaponin B

Reference work entry

CAS Registry Number: 117804-08-7 Open image in new window

Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Ursene Type – Ursolic Acid

Biological source: Cynara cardunculus [1]

C43H68O13: 792.465 (Me ester)

[α]D21 + 9.7° (c 1.81, MeOH) [1]

1H NMR (89.55 MHz, J/Hz, C5D5N): 5.36 (brs, H-12), 2,40 (d, J = 10.0, H-18), 3.68 (s, CH3O-28)

β-D-GlcUAp: 4.98 (d, J = 7.0, H-1), 3.74 (s, COOMe)

α-L-Arap: 5.16 (d, J = 7.0, H-1) [1]

13 C NMR (22.5 MHz, C 5D 5N) (Me ester): [ 1]

Table 1

C-1

39.0

C-16

24.7

GlcUA-1

105.4

2

26.7

17

48.4

2

83.4

3

89.3

18

53.4

3

76.8

4

39.6

19

39.3

4

73.8

5

55.9

20

39.3

5

77.4

6

18.5

21

30.9

6

170.4

7

33.4

22

37.1

Me

52.1

8

39.9

23

28.0

Ara-1

106.8

9

47.9

24

15.7

2

72.9

10

36.9

25

16.5

3

74.3

11

23.6

26

17.2

4

69.2

12

126.0

27

23.9

5

67.1

13

138.8

28

177.7

   

14

42.4

29

17.4

   

15

28.5

30

21.3

   
   

Me

51.5

   

References

  1. 1.
    S. Shimizu, N. Ishihara, K. Umehara, T. Miyase, A. Ueno, Chem. Pharm. Bull. 36(7), 2466 (1988)CrossRefGoogle Scholar

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