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. 2016 Mar 2;21(3):294. doi: 10.3390/molecules21030294
Umbilicaxanthoside A (CDCl3)
Position δC δH (J in Hz)
1 150.9 -
1–OH - 13.25 (s) (1H)
2 118.2 -
3 120.1 6.51 (s) (1H)
4 142.6 -
4–OCH3 56.4 3.75 (s) (3H)
4a 140.9 -
5 146.4 -
6 104.8 6.39 (d, 2.1) (1H)
7 153.0 -
8 108.1 6.73 (d, 2.1) (1H)
8a 128.9 -
9 179.8 -
9a 116.1 -
10a 136.5 -
1′ 22.0 3.19 (d, 6.6) (2H)
2′ 123.5 5.92 (td, 6.6, 1.3) (1H)
3′ 131.3 -
4′ 25.9 1.64 (s) (3H)
5′ 17.9 1.57 (s) (3H)
1″ 99.8 4.80 (d, 7.3) (1H)
2″ 74.7 3.52 (dd, 8.9, 7.3) (1H)
3″ 77.2 3.58 (t, 8.9) (1H)
4″ 71.4 3.41 (t, 8.9) (1H)
5″ 78.6 3.45 (m) (1H)
6″ 62.6 3.93 (dd, 11.8, 2.3) (1H)
3.72 (dd, 12.1, 5.2) (1H)