Table 1.

NMR Spectrocopic Data (600 MHz, CDCl₃) for Cyanolide A (2).

Carbon	δC, mult.a	δH mult (J in Hz)b	HMBCc	COSY	NOESY
1, 1′	171.6, qC
2a, 2a′	35.0, CH2	2.38, dd (1.8, 16.2)	1, 3, 4	2b, 3	12, 13
2b, 2b′		2.27, dd (9.0, 16.2)	1, 3	2a, 3	12
3, 3′	80.3, CH	3.44, dd (1.8, 9.0)	1, 2, 5, 7, 12	2a, 2b	13
4, 4′	38.6, qC
5, 5′	85.4, CH	3.31, dd (4.8, 11.4)	4, 12, 13, 14	6a, 6b	13, 14
6a, 6a′	36.9, CH2	1.97, ddd (2.0, 4.8, 12.3)	4, 5, 7	5, 6b
6b, 6b′		1.47, ddd (11.8, 11.8, 12.3)	4, 5, 7, 8	5, 6a, 7	12
7, 7′	75.2, CH	3.47, m		6b, 8a, 8b	9
8a, 8a′	40.6, CH2	1.82, dt (9.0, 14.4)	6, 7, 9, 10	7, 8b, 9
8b, 8b′		1.57, m	6, 7, 9, 10	7, 8a, 9
9, 9′	73.8, CH	4.91, m	1′, 7, 8, 10, 11	8a, 8b	7, 11
10a, 10a′	28.3, CH2	1.59, m	8, 9, 11	11
10b, 10b′		1.51, m	8, 9, 11	11
11, 11′	9.4, CH3	0.85, t (7.8)	9, 10	10a, 10b	9
12, 12′	13.5, CH3	0.88, s	3, 4, 5, 13		2a, 2b, 6b, 19
13, 13′	22.1, CH3	0.96, s	3, 4, 5, 12		2a, 3, 5, 14, 19
14, 14′	105.9, CH	4.24, d (7.8)	5, 15, 18	15	5, 13, 16, 19
15, 15′	84.0, CH	2.96, dd (7.8, 9.0)	14, 16, 19	14	19
16, 16′	85.6, CH	3.09, dd (9.0, 10.1)	14, 15, 17, 20		14
17, 17′	79.4, CH	3.23, ddd (5.4, 10.1, 10.2)	15, 18, 21	18a
18a, 18a′	63.3, CH2	3.97, dd (5.4, 11.4)	14, 16, 17	17, 18b
18b, 18b′		3.09, dd (10.2, 11.4)	14, 16, 17	18a	19
19, 19′	61.0, CH3	3.60, s	15		12, 13, 14, 15, 18b
20, 20′	60.9, CH3	3.62, s	16
21, 21′	58.8, CH3	3.46, s	17

^aRecorded at 150 MHz.

^bRecorded at 600 MHz.

^cFrom proton to the indicated carbon.