Table 1.

¹H and ¹³C NMR Data for Credneramide A (1) and Credneramide B (2).

	Credneramide A (1)			Credneramide B (2)
carbon	δC, mult.a	δH, mult. (J in Hz)b	HMBCb	δC, mult.c	δH, mult. (J in Hz)d	HMBCd
1	172.1, qC			172.1, qC
2	36.4, CH2	2.19, t (7.0)	1, 3, 4	36.4, CH2	2.22, t (6.9)	1, 3, 4
3	28.4, CH2	2.32, dt (7.0, 6.6)	1, 2, 4, 5	28.5, CH2	2.35, dt (6.9, 6.1)	1, 2, 4, 5
4	131.2, CH	5.43, dt (15.3, 6.6)	2, 5, 6	131.3, CH	5.48, dt (14.9, 6.1)	2, 3, 5, 6
5	127.8, CH	5.47, dt (15.3, 6.7)	3, 4	127.8, CH	5.41, dt (14.9, 6.1)	3, 4, 6, 7
6	37.9, CH2	2.70, d (6.7)	4, 5, 7, 8, 11	37.9, CH2	2.72, d (6.1)	4, 5, 7, 8, 11
7	141.5, qC			141.5, qC
8	32.3, CH2	2.15, t (6.7)	6, 7, 9, 10, 11	32.2, CH2	2.15, t (7.6)	6, 7, 9, 10, 11
9	20.2, CH2	1.43 h (7.5)	7, 8, 10	20.2, CH2	1.43, h (7.6)	7, 8, 10
10	13.9, CH3	0.91 t (7.5)	8, 9	13.9, CH3	0.91, m	8, 9
11	113.1, CH	5.77, s	6, 7, 8	113.1, CH	5.78, s	6, 7, 8, 9
NH		5.42 d (6.2)			5.39
1′	40.5, CH2	3.53 (dt (6.9, 6.2)	1, 2′, 3′	37.8, CH2	3.26, dt (7.2, 6.5)	1, 2′, 3′
2′	35.7, CH2	2.81, t (6.9)	1′, 3′, 4′	38.5, CH2	1.36, dt (7.5, 7.2)	1′, 3′, 4′, 5′
3′	138.9, qC			25.9, CH	1.60, m	2′, 4′, 5′
4′	128.7, CH	7.19, d (7.2)	2′, 5′, 6′, 7′	22.4, CH3	0.90, m	3′, 5′
5′	128.7, CH	7.32, dd (7.2)	3′, 4′	22.4, CH3	0.90, m	3′, 4′
6′	128.5, CH	7.24, t (7.2)	4′
7′	128.7, CH	7.32, t (7.2)	3′, 4′
8′	128.7, CH	7.19, d (7.2)	2′, 5′, 6′, 7′

^a75 MHz in CDCl₃.

^b500 MHz in CDCl₃.

^c150 MHz CDCl₃.

^d600 MHz in CDCl₃.