Natural Compounds pp 147-148 | Cite as
5,2′-Dihydroxyflavone-7-O-glucuronide (2′-Hydroxychrysin-7-O-glucuronide)
Taxonomy: Physicochemical and Pharmacological Properties of Flavonoids – Flavons and Flavon-3-ols
Biological sources: Scutellaria comosa [1], S. Ikonnikovii [2], S. pycnoclada [3], S. Tournefortii [4]
C21H18O11: 446.0841
Mp: 230–235°C
[α]D−140.0° (EtOH)
UV: 270, 330; +ZrOCl2: 290, 390; +NaOH: 405 [1, 2]
1H NMR (DMSO-d6): 5.23 (1H, d, J = 6.9, H-1″), 6.44 (1H, d, J = 2.2, H-6), 6.82 (1H, d, J = 2.2, H-8), 6.98 (1H, t, H-5′), 7.07 (1H, d, J = 8.0, H-3′), 7.13 (1H, s, H-3), 7.39 (1H, t, H-4′), 7.83 (1H, d, J = 8.0, H-6′), 12.86 (1H, s, 5-OH) [1, 2]
Table 1
C-2 |
163.07 |
C-1′ |
117.35 |
C-1″ |
99.45 |
3 |
105.34 |
2′ |
157.08 |
2″ |
72.96 |
4 |
182.20 |
3′ |
116.82 |
3″ |
74.11 |
5 |
161.0 |
4′ |
132.84 |
4″ |
71.89 |
6 |
99.37 |
5′ |
119.13 |
5″ |
76.32 |
7 |
161.73 |
6′ |
128.25 |
6″ |
172.02 |
8 |
94.69 |
||||
9 |
157.34 |
||||
10 |
109.12 |
References
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