Table 1.

¹H NMR Data (400 MHz, δ, Hz) for Perulactones I–L (1–4) in CDCl₃^a

position	1	2	3	4
2	5.99 dd (10.0, 2.8)	5.87 dd (10.0, 2.0)	6.01 dd (10.0, 2.4)	2.72 dd (20.0, 4.4)
				3.29 brd (20.0)
3	6.85, ddd (10.0, 6.4, 2.0)	6.77 ddd (10.0, 4.8, 2.4)	6.84 ddd (10.0, 6.4, 2.4)	5.61 ddd (9.6, 4.4, 2.8)
4	1.92 m	2.83 dd (21.2, 4.8)	1.90 m	6.02 dd (9.6, 2.8)
	2.96 brd (19.2)	3.27 brd (21.2)	2.98 dt (18.8, 2.8)
6	3.19 d (2.0)	5.59 brd (5.6)	3.14 d (2.8)	5.66 t (4.0)
7	1.97 m	2.03 m	2.08 m	2.09 m
	1.80 m	1.82 m	1.34 m	2.03 m
8	1.86 m	1.84 m	1.78 m	1.99 m
9	2.33 m	2.00 m	1.19 m	2.36 m
11	2.08 m	2.20 m	2.13 m	1.93 m
	1.62 m	1.54 m	1.54 m	1.48 m
12	2.20 m	1.80 m	1.97 m	1.73 m
	1.47 m	1.55 m	1.49 m	1.56 m
14			1.32 m
15	1.67 m	1.79 m	2.10 m	2.08 m
	1.52 m	1.52 m	1.89 m	1.27 m
16	2.62 m	1.66 m	5.71 dd (2.4, 1.2)	2.67 m
	1.43 m	1.85 m		1.44 m
17		2.25 m
18	1.08 s	1.03 s	0.94 s	1.12 s
19	1.26 s	1.23 s	1.25 s	1.38 s
21	1.22 s	1.20 s	1.27 s	1.23 s
22	4.01 brd (10.4)	3.46 dd (10.8, 1.6)	3.65 dt (10.4, 2.0)	4.11 brd (10.4)
23	2.12 m	1.63 m	1.70 m	2.38 m
	1.33 m	1.24 m	1.47 m	1.67 m
24	2.71 q (7.2)	2.70 m	2.60–2.75 m	2.53 m
25	2.65 m	2.65 m	2.60–2.75 m	2.52 m
27	1.16 d (7.2)	1.16 d (7.6)	1.16 d (7.2)	1.13 d (7.6)
28	4.06 dd (8.8, 8.4)	4.10 dd (9.2, 8.4)	4.14 dd (9.2, 7.6)	4.03 dd (8.8, 7.6)
	4.39 dd (8.8, 7.2)	4.43 dd (9.2, 7.2)	4.43 dd (9.2, 6.8)	4.31 dd (8.8, 6.8)

^aAssignments based on DEPT, HSQC, and HMBC data.