Research Article
Study of the Gastroprotective Effect of Extracts and Semipurified Fractions of Chresta martii DC. and Identification of Its Principal Compounds
Table 1
Data of 1H- and 13C-NMR of flavonoids (F1.1 and F1.2) isolated from the F1 of C. martii (300 MHz) in DMSO-d6.
| | | Flavonoid (F1.1) | Flavonoid (F1.2) | | Positions | Chrysoeriol | 3′,4′-Dimethoxyluteolin | | | 1H (, Hz) | 13C | 1H (, Hz) | 13C |
| | 2 | | 163.7 | | 163.9 | | 3 | 6.88 (s) | 104.1 | 6.97 (s) | 106.0 | | 4 | | 181.8 | | 181.5 | | 5 | | 162.0 | | 163.0 | | 6 | 6.19 (d. 1.8) | 98.0 | 6.21 (d. 2.1) | 98.2 | | 7 | | 164.2 | | 164.7 | | 8 | 6.52 (d. 1.8) | 94.0 | 6.53 (d. 1.8) | 94.0 | | 9 | | 157.4 | | 157.9 | | 10 | | 104.0 | | 104.0 | | 1′ | | 121.0 | | 120.6 | | 2′ | 7.56 (d. 2.4) | 110.0 | 7.56 (d. 2.1) | 109.8 | | 3′ | | 148.1 | | 148.0 | | 4′ | | 150.8 | | 151.7 | | 5′ | 6.94 (dd. 8.4; 2.4) | 116.0 | 7.13 (d. 8.4) | 116.2 | | 6′ | 7.55 (dd. 8.4; 2.4) | 122.0 | 7.68 (dd. 9.6; 1.8) | 121.6 | | 5-OH | 12.97 | | | | | 8-OH | 10.79 | | | | | 4′-OH | 9.96 | | | | | 3′-OCH3 | 3.89 (s) | 56.0 | 3.85 (s) | 56.0 | | 4′-OCH3 | | | 3.88 (s) | 56.0 |
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