Table 1.

NMR Data of Araguspongines A (1) and K (3)^a

position	1		3
	δH (m, J Hz)	δC, m	δH (m, J Hz)	δC, m	HMBCc
2	3.44 (dd, 10.7, 10.7)	76.2, db	3.75 (dd, 10.7, 10.7)	77.2, d	10d
3	1.50 (m)	26.0, t	1.32 (m)	31.9, t	4
	1.61 (m)		1.55 (m)
4	2.89 (m)	52.4, t	2.83 (br d, 9.6)	57.3, t	3, 6, 10
	2.97 (br d, 8.5)		3.66 (ddd, 11.8, 11.8, 2.6)
6	2.22 (br d, 8.4)	44.3, t	3.40 (br dd, 13.4, 3.0)	68.3, t	10
	2.91 (m)		3.51 (ddd, 13.4, 13.4, 4.3)
7	1.21 (m)	20.8, t	1.54 (m)	16.5, t
	1.66 (m)		1.55 (m)
8	1.30 (m)	22.6, t	1.32 (m)	22.9, t	10
	1.40 (m)		1.52 (m)
9		70.7, s		72.5, s	10, 11
10	3.93 (s)	91.5, d	4.24 (s)	98.4, d	6
11	1.50 (m)	38.5, t	1.57 (m)	39.7, t
	1.54 (m)		1.58 (m)
12	1.21 (m)	29.4, t	1.28 (m)	29.5, t
	1.51 (m)		1.58 (m)
13	1.25 (m)	32.2, t	1.52 (m)	31.6, t
	1.42 (m)		1.72 (m)
14	1.20 (m)	25.3, t	1.30 (m)	25.6, t
	1.52 (m)		1.50 (m)
15	1.30 (m)	24.8, t	1.30 (m)	25.1, t
	1.60 (m)		1.52 (m)
16	1.48 (m)	35.5, t	1.32 (m)	35.0, t
	1.57 (m)		1.57 (m)
2′	3.23 (dd, 10.7, 10.7)	75.2, d	3.33 (dd, 10.7, 10.7)	75.4, d	3′, 4′, 10′
3′	1.48 (m)	32.3, t	1.48 (m)	32.4, t
	1.55 (m)		1.66 (m)
4′	2.65 (br d, 10.5)	54.2, t	2.72 (ddd, 11.1, 11.1, 4.2)	54.4, t
	2.85 (br d, 14.2)		2.92 (ddd, 11.1, 2.9, 2.0)
6′	1.88 (ddd, 11.4, 11.4, 2.8)	54.0, t	1.96 (ddd, 11.7, 11.7, 2.8)	54.3, t	9′, 10′
	2.07 (ddd, 11.4, 2.8, 2.8)		2.18 (ddd, 11.7, 2.9, 2.9)
7′	1.49 (m)	24.7, t	1.58 (m)	24.8, t	9′
	1.68 (m)		1.62 (m)
8′	1.28 (m)	28.9, t	1.28 (m)	29.0, t	10′
	1.52 (m)		1.78 (m)
9′	1.54 (m)	40.3, d	1.63 (m)	40.5, d
10′	3.09 (d, 8.6)	95.5, d	3.06 (d, 8.6)	95.6, d	4′
11′	1.23 (m)	31.1, t	1.32 (m)	31.3, t
	1.42 (m)		1.60 (m)
12′	1.28 (m)	28.8, t	1.28 (m)	29.0, t
	1.52 (m)		1.78 (m)
13′	1.21 (m)	31.5, t	1.17 (m)	30.1, t
	1.43 (m)		1.37 (m)
14′	1.20 (m)	31.6, t	1.32 (m)	31.8, t
	1.41 (m)		1.52 (m)
15′	1.30 (m)	24.7, t	1.30 (m)	25.1, t
	1.61 (m)		1.52 (m)
16′	1.48 (m)	36.0, t	1.29 (m)	35.6, t
	1.57 (m)		1.51 (m)

^aSpectra recorded in CDCl₃.

^b13C multiplicities were determined by DEPT 135°.

^cTwo-bond and three-bond correlations.

^dProton number.