TABLE 3.

NMR assignments for KOS-1806^a

Carbon no.	δC	δH	COSY	HMBC
25	12.6	1.33, 3H, s	H-9	C-7,8,9
22	14.3	1.69, 3H, s	H-3	C-1,2,3
26	17.9	0.89, 3H, d, J = 6 Hz	H-10	C-9,10,11,23
28	18.7	0.69, 3H, d, J = 4.8 Hz	H-14	C-13,14,15
4	19.2	2.02, 1H, m	H-4,5
		2.13, 1H, m	H-3,4,5
5	30.5	1.09, 1H, m	H-5,6
		1.21, 1H, m
14	31.2	1.78, 1H, m	H-13,28
13	34.4	1.05, 1H, m	H-13,14
		1.49, 1H, m	H-13,15
10	35.1	2.30, 1H, m	H-9
15	43.6	2.27, 1H, dd	H-15	C-16,17
		2.53, 1H, dd	H-14,15	C-16,17,21
27	57.2	3.19, 3H, s	H-7	C-12
23	59.3	3.29, 3H, s		C-6
11	73.9	3.39, 1H,	H-10,11-OH	C-27
6	80.1	3.19, 1H,	H-5	C-7,23
12	81.4	2.95, 1H, m	H-11,13,27	C-14
7	81.8	4.81, 1H, d, J = 10	H-6	C-5,6,8,9,24,25
19	106.8	6.56, 1H, bs		C-17
17	113.8	6.23, 1H, s		C-15,18,19,21
21	117.2	6.16, 1H, s		C-17,19
8	130.8
2	132.6
9	133.9	5.19, 1H, d, J = 8.8	H-10,25	C-7,25
3	134.9	5.65, 1H, s	H-4,22
20	141.0
16	141.9
24	157.1
18	158.3
1	172.1
11-OH		4.34, 1H, s	H-11
1-NH		9.30, 1H, bs		C-2,17,19

^aCOSY, correlation spectroscopy; HMBC, heteronuclear multiple bond correlation.