Table 1. NMR Spectroscopic Data for Hypocoprins A (1) and C (3) in Acetone-d₆.

	1		3
position	δCa	δH, mult (J in Hz)b	δCa	δH, mult (J in Hz)b
1	75.7	4.21, dd (3.2, 13)	75.6	4.21, br d (11)
2	136.7		138.3
3	127.6	5.34, br d (12)	122.9	5.36, br dd (4.2, 10)
4	25.0	2.00, br d (12)	32.7	2.28, m
		2.30, dq (4.2, 12)
5	44.8	1.78, mc	79.4	3.61, dd (9.6, 6.6)
6	72.7		75.5
7	32.4	0.80, dt (9.2, 5.2)	28.7	0.71, dt (9.3, 5.5)
8	5.2	0.10, dt (9.2, 5.2)	5.5	0.18, dt (9.3, 5.5)
		0.36, dt (9.6, 5.2)		0.44, dt (9.6, 5.5)
9	28.3	0.47, dt (9.6, 5.2)	27.9	0.54, dt (9.6, 5.5)
10	31.3		32.4
11	50.1	1.53, dd (3.2, 13)	50.6	1.52, dd (3.0, 13)
		1.78, mc		1.82, dd (13, 14)
12	20.9	0.71, s	15.1	0.67, s
13	10.6	1.67, s	10.8	1.68, s
14	20.1	0.64, s	19.9	0.63, s
15	34.4	0.90, s	34.4	0.91, s

^aData were collected at 600 MHz (¹H).

^bData were collected at 100 MHz (¹³C).

^cOverlapping signals.