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Guaiacin D

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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]

C52H82O21: 1042.534

1H NMR (300 MHz, J/Hz, CD3OD): 0.80, 0.85, 0.95, 1.02, 1.19 (s, CH3 × 5), 4.60 (brs, H2-29), 5.31 (t, H-12)

α-L-Arap: 4.50 (d, J = 7.3, H-1)

β-D-Glcp: 4.47 (d, J = 7.6, H-1)

β-D-Glcp′: 5.36 (d, J = 8.0, H-1)

α-L-Rhap: 5.19 (d, J = 1.46, H-1), 1.21 (d, J = 6.18, CH3-6) [1]

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

Table 1

C-1

40.16

C-16

24.55

Ara-1

105.09

Rha-1

101.97

2

27.19

17

48.68

2

75.4

2

72.25

3

89.66

18

49.29

3

84.38

3

72.34

4

40.39

19

42.61

4

68.48

4

73.83

5

57.21

20

149.44

5

64.82

5

69.82

6

19.33

21

38.45

Glc-1

104.28

6

17.90

7

33.94

22

30.90

2

73.91

Glc′-1

95.78

8

40.79

23

28.66

3

78.03

2

75.27

9

48.68

24

17.90

4

70.26

3

78.66

10

37.95

25

16.12

5

77.98

4

71.16

11

24.17

26

17.28

6

62.43

5

78.28

12

124.32

27

26.34

   

6

62.43

13

144.20

28

177.25...

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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