Secalonic acid B (CDCl3)
Position	δC	δH (J in Hz)
1, 1′	159.4	-
–OH 1,1′	-	11.85 (s) (2H)
2, 2′	118.7	-
3, 3′	139.7	7.42 (d, 8.5) (2H)
4, 4′	107.5	6.57 (d, 8.5) (2H)
4a, 4a′	157.2	-
5, 5′	71.4	4.12 (d, 1.4) (2H)
–OH 5,5′	-	2.57 (s) (2H)
6, 6′	28.5	2.12 (m) (2H)
7, 7′	32.6	7, 7′ α 2.52 (dd, 19.0, 11.5) (2H)
		7, 7′ β 2.41 (dd, 19.0, 6.1) (2H)
8, 8′	179.8	-
–OH 8,8′	-	13.96 (s) (2H)
8a, 8a′	99.9	-
9, 9′	187.7	-
9a, 9a′	107.0	-
10a, 10a′	84.8	-
11, 11′	17.5	1.18 (d, 6.8) (6H)
12, 12′	171.2	-
13, 13′	53.4	3.72 (s) (6H)