Table 3.

¹H and ¹³C NMR data for AD211a (8) and AD281a (19).

	AD211a (8)		AD281a (19)
no.	13C	1H	13C	1H
1	159.2		160.7
2	89.6	5.37 (d, J=1.7, 1H)	88.3	5.14 (d, J=1.7, 1H)
3	169.8		170.2
4	108.7	6.03 (d, J=1.7)	100.5	5.56 (d, J=1.7, 1H)
5	154.2		159.1
6	48.5	4.16 (s, 2H)	47.2	3.5 (s, 2H)
7	134.7		136.9
8	109.1	6.76 (d, J=6.8, 1H)	119.4	6.21 (d, J=1.8, 1H)
9	128.7	7.28 (dd, J=6.8,7.1, 1H)	160.5
10	116.6	6.94 (d, J=7.1, 1H)	99.6	6.08 (d, J=1.8, 1H)
11	157		164.7
12	119.5		108.3
13	202.9		199.7
14	119.5		110.1
15	134.6		163.5
16	105.1	6.06 (d, J=1.6, 1H)	102.9	6.06 (d, J=3.6, 1H)
17	163.9		160.2
18	100.2	6.17 (d, J=1.6, 1H)	100.3	6.15 (d, J=3.6, 1H)
19	160.4		144.7
20	102.8		36.8	2.18 (t, 2H)
21	155.3		30.9	1.2 (m, 2H)
22	113.2	6.63 (s,1H)	27.7	1.2 (m, 1H)
23, 23’	138		22.2	0.79 (d, J=0.54, 6H)
24	19.9	1.95 (s, 3H)

¹H and ¹³C NMR data were recorded in DMSO-d₆ (500 MHz for ¹H and 125 MHz for ¹³C). Chemical shifts are reported in δ (ppm). Coupling constants are reported in Hz. Carbons are labeled according to their number in polyketide backbone.