Momordicoside K

Reference work entry

CAS Registry Number: 81348-84-7 Open image in new window

Taxonomy: Physicochemical and Pharmacological Properties of Triterpene Glycosides – Glycosides of Aglycones of Cucurbitane Type – 3β,7β-Dihydroxy-25-methoxy-cucurbita-5,23-diene-19-al

Biological source: Momordica charantia [1]

C37H60O9: 648.423

Mp: 236–237°C [1]

[α]D20 + 63.3° (c 1.00, CHCl3-MeOH (1:1)) [1]

CD [θ]20811: +58500° (c, 2.05 × 10−4 g/ml, MeOH) [1]

1H NMR (J/Hz): 3.79 (brs, H-3), 6.17 (brd, J = 6.0, H-6), 5.57 (brs, H-23), 5.57 (H-24), 0.78, 0.87, 0.95, 1.12, 1.31, 1.31, 1.42 (s, CH3 × 7), 3.21 (OCH3), 10.43 (CHO) [1]

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

Table 1

C-3

71.5

Glc-1

106.8

4

41.8

2

75.4

5

121.9

3

78.5

6

147.1

4

71.7

7

74.7

5

78.3

13

45.6

6

62.7

14

47.9

   

19

207.0

   

OCH3

50.0

   

23

128.0

   

24

137.3

   

25

74.7

   

References

  1. 1.
    H. Okabe, Y. Miyahara, T. Yamauchi, Chem. Pharm. Bull. 30, 4334 (1982)CrossRefGoogle Scholar
  2. 2.
    H. Okabe, Y. Miyahara, T. Yamauchi, Tetrahedron Lett. 23, 77 (1982)CrossRefGoogle Scholar

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