Table 1.

¹H, ¹³C and HMBC correlation data for tokinolide A (6) ^a.

Position	δc, Type	δH, (J in Hz)	HMBC	Position	δc, Type	δH, (J in Hz)	HMBC
1	169.5, qC			1′	175.4, qC
3	149.0, qC			3′	151.4, qC
3a	151.4, qC			3a′	48.2, qC
4	17.8, CH2	2.56 m, 2.40 m	5, 3a, 7a	4′	29.7, CH2	1.94 m, 2.03 m	5′, 7, 3a′, 7a′
5	20.1, CH2	1.70 m, 2.12 m	4, 6, 7, 7a′	5′	21.0, CH2	2.10 m	7′, 3a′, 4′, 6′
6	40.2, CH	2.90 m	4, 5, 7, 1′,7a′	6′	131.1, CH	6.11 m	4′, 5′, 7a′
7	34.1, CH	3.23 d (9.4)	4′, 6, 3a, 7a, 3a′	7′	124.6, CH	6.00 d (9.8)	5′, 3a′, 7a′
7a	125.3, qC			7a′	46.4, qC
8	112.1, CH	5.21 t (7.9)	3, 3a, 10	8′	106.9, CH	4.66 dd (7.1, 8.3)	3′,3a′, 10′
9	27.9, CH2	2.36 m	3, 8, 10, 11	9′	27.2, CH2	2.08 m, 1.90 m	3′, 8′, 10′, 11′
10	22.4, CH2	1.49 m	8, 9, 11	10′	22.5, CH2	1.25 m	8′, 9′,11′
11	13.7, CH3	0.95 t (7.4)	9, 10	11′	13.5, CH3	0.80, (7.4)	9′,10′

^a Data obtained on a Varian 600 MHz instrument in CDCl₃.