Table 2.

NMR data for cyclocinamide B (2) in DMSO-d₆ (400 MHz).

position	δC	δH (J in Hz)	COSY	TOCSY	HMBCa
OH	-	6.00 d (4.0)	-	3	5
1	171.1	-	-	-	-
2	-	7.05 br t (5.0)	4	4, 3	1
3	70.4	4.04 m	4, OH	4, 2, OH	-
4	43.5	3.35 m, 3.48 m	2, 3	3, 2, OH	-
5	171.6	-	-	-	-
6	-	7.87 d (9.9)	7	7, 18	7, 5
7	54.0	4.52 m	6, 18	18, 6	18, 19, 8, 5
8	173.5	-	-	-	-
9	-	7.98 t (6.0)	10	11, 10	8
10	40.8	3.34 s	28, 11	11, 9, 28	-
11	55.2	4.27 m	10, 28	10, 9, 28	29
12	169.4	-	-	-	-
13	-	7.89 d (9.2)	14	14, 15	12
14	50.0	4.56 m	13, 15	15, 13	15, 16, 12
15	37.1	2.26 dd (4.8, 15.6)	11	11, 13	14, 16, 1
15′		2.45 dd (7.4, 15.6)	11	-	14, 16, 1
16	172.6	-	-	-	-
17	-	6.80 brs	17′	17′	16
17′		7.28 brs	17	17	-
18	28.5	2.95	7	7, 6	7, 8, 20, 19, 28
19	110.2	-	-	-	-
20	126.0	7.15 d (1.7)	18, 21	21	19
21	-	11.1 br d (1.7)	20	20	(19, 28)
22	135.5	-	-	-	-
23	114.1	7.28 d (8.4)	26, 24	26, 24	28, 25
24	124.1	7.14 dd (1.8, 8.4)	26, 23	26, 23	28, 26, 25, 22
25	111.8	-	-	-	-
26	121.4	7.63 d (1.8)	24,23	23	19,25, 24, 22
28	129.8	-	-	-	-
28	-	8.09 d (7.6)	11	111, 10	29
29	169.7	-	-	-	-
30	42.9	3.75 m, 3.83 m	31	31	29, 32
31	-	8.57 t (5.8)	30	30	34, 32
32	161.0	-	-	-	-
33	125.2	-	-	-	-
34	112.2	7.02 s	-	-	33, 36, 37, 32
35	107.9	-	-	-	-
36	119.2	-	-	-	-
37	34.1	3.76 s	-	-	33, 34, 36

^aHMBC correlations from proton(s) to the stated carbons.