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Guaiacin E

Reference work entry

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Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Oleanene Type – 30-nor-olean-12,20(29)-dien-28-oic Acid

Biological source: Guaiacum officinale [1]

C52H82O22: 1058.529

1H NMR (300 MHz, J/Hz, CD3OD): 0.80, 0.86, 0.95, 1.06, 1.19 (s, CH3 × 5), 4.60 (brs, H-29), 5.31 (t, H-12)

α-L-Arap: 4.59 (d, J = 7.3, H-1)

β-D-Glcp: 4.84 (d, J = 8.0, H-1)

β-D-Glcp′: 4.41 (d, J = 7.4, H-1)

β-D-Glcp″: 5.36 (d, J = 8.0, H-1) [1]

13 C NMR(75 MHz, CD 3OD): [ 1]

Table 1

C-1

39.9

C-16

24.54

Ara-1

106.19

Glc′-1

105.17

2

27.15

17

48.64

2

78.66

2

73.90

3

91.87

18

49.29

3

84.4

3

77.93

4

40.1

19

42.61

4

69.82

4

70.11

5

57.0

20

149.49

5

66.67

5

76.58

6

19.3

21

38.41

Glc-1

103.7

6

62.24

7

33.9

22

30.88

2

73.9

Glc″-1

95.73

8

40.14

23

28.3

3

77.84

2

75.28

9

48.64

24

17.89

4

70.11

3

78.41

10

37.95

25

15.99

5

76.05

4

72.36

11

24.13

26

17.79

6

62.24

5

78.27

12

124.35

27

26.37

   

6

63.68

13

144.29

28

177.33

       

14

42.62

29

107.43

     

References

  1. 1.
    V.U. Ahmad, S. Perveen, S. Bano, Phytochemistry 29(10), 3287 (1990)CrossRefGoogle Scholar

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© Springer Science+Business Media New York 2013

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