Castanopsinin F2

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Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Ursene Type – 2α,3β,23,24-Tetrahydroxy-urs-12-ene-28-oic Acid

Biological source: Castanopsis cuspidata [1]

C57H68O23: 1120.415

[α]D22 + 82.3° (c 0.44, MeOH) [1]

FAB-MSm/z: 1119 (M-H) [1]

1H NMR (100 MHz, J/Hz, C5D5N): 6.87, 7.14 (s, HHDP-H), 7.92 (s, galloyl-H) [1]

13 C NMR (25 MHz, C 5D 5N): [ 1]

Table 1

C-1

48.4

Glc-1

95.8

HHDP-5

137.0

2

65.3

2

74.0

 

137.8

3

84.8

3

79.2

COO-

168.0

4

47.9

4

71.3

 

169.7

5

50.8

5

78.8

Galloyl-1

121.4

6

20.8

6

62.4

2,6

110.5

7

33.7

HHDP-1

116.4

3,5

147.4

8

40.2

 

116.8

4

140.7

9

48.6

2

126.8

   

10

38.8

 

127.1

   

12

125.6

3

106.9

   

13

138.5

 

108.2

   

23

69.8

4,6

146.0

   

24

63.1

 

(2C)

   

28

176.4

 

146.5

   
     

146.7

   

References

  1. 1.
    M. Ageta, G.-I. Nonaka, I. Nishioka, Chem. Pharm. Bull. 36(5), 1646 (1988)CrossRefGoogle Scholar

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