Table 3.

NMR Spectroscopic Data for Napyradiomycin CNQ525.554 (3)^a,^b

Carbon #	δC, type	δH, mult (J in Hz)	COSY	HMBCc
1	90.6, C
2	29.4, CH2	1.54, m		1, 3, 6
		1.20, m		1, 3, 6
3	26.7, CH2	1.55, m		1, 2, 4, 5
		1.62, m		1, 2, 4, 5
4	87.2, CH	3.77, d (4.8)	H-3a, H-3b	1, 2, 3, 5, 6
5	41.0, C
6	48.6, CH	1.78, bs		1, 2, 7, 8, 21, 22, 23
7	36.7, CH2	1.41, dd (5.1, 15.5)	H6	1, 5, 6, 8, 20
		2.03, dd (3.4, 15.5)	H6	1, 5, 6, 8, 20
8	83.6, C
9	78.3, C
10	51.0, CH	4.58, dd (3.8, 12.2)	H11a, H-11b	9, 11, 12, 24, 25
11	43.6, CH2	2.49, dd (12.2, 14.0)		8, 9, 10, 12, 13,
		2.60, dd (3.8, 14.0)		8, 9, 10, 12, 13,
12	81.8, C
13	193.9, C
14	107.5, C
15	163.4, C
16	119.9, C
17	163.1, C
18	107.4, CH	7.22, s		14, 16, 17, 19, 20
19	131.6, C
20	192.9, C
21	20.9, CH3	1.45, s		1, 2, 6
22	31.6, CH3	0.85, s		4, 5, 23
23	21.2, CH3	0.23, s		4, 5, 22
24	29.9, CH3	1.46, s		9, 10, 25
25	23.9, CH3	1.36, s		9, 10, 24
26	8.5, CH3	2.16, s		14, 15, 16, 17, 18
OH (15)		12.36, s		14, 15, 16

^a1H spectra were recorded in CDCl₃ at 600 MHz.

^bAssignments were made based on COSY, HMBC and HSQC experiments.

^cHMBC correlations are from the proton(s) stated to the indicated carbons.