Umbilicaxanthoside B (CDCl3)
Position	δC	δH (J in Hz)
1	151.0	-
1–OH	-	13.30 (s) (1H)
2	117.8	-
3	119.4	6.47 (s) (1H)
4	143.2	-
4–OCH3	56.3	3.75 (s) (3H)
4a	141.3	-
5	147.1	-
6	103.7	6.23 (s) (1H)
7	153.2	-
8	118.4	-
8a	129.6	-
9	183.1	-
9a	114.6	-
10a	135.7	-
1′	25.4	3.38 (d, 7.2) (2H)
2′	123.8	5.39 (td, 7.2, 1.2) (1H)
3′	130.9	-
4′	26.2	1.65 (s) (3H)
5′	18.4	1.79 (s) (3H)
1″	26.1	4.19 (d, 6.8) (2H)
2″	124.8	5.37 (td, 6.8, 1.5) (1H)
3″	132.0	-
4″	25.9	1.67 (s) (3H)
5″	18.0	1.84 (s) (3H)
1‴	99.8	5.05 (d, 8.1) (1H)
2‴	74.2	3.52 (dd, 8.9, 8.1) (1H)
3‴	76.9	3.58 (t, 8.9) (1H)
4‴	78.2	3.12 (dd, 9.3, 8.9) (1H)
5‴	78.7	3.45 (m) (1H)
6‴	62.6	3.93 (dd, 12.1, 2.3) (1H)
		3.72 (dd, 12.1, 5.2) (1H)
1’’’’	104.1	5.15 (d, 8.0) (1H)
2’’’’	73.8	3.52 (dd, 9.0, 8.0) (1H)
3’’’’	76.5	3.58 (t, 9.0) (1H)
4’’’’	69.7	3.41 (t, 9.0) (1H)
5’’’’	76.9	3.45 (m) (1H)
6’’’’	62.6	3.93 (dd, 12.1, 2.2) (1H)
		3.72 (dd, 12.1, 5.2) (1H)