Table 1.

¹H and ¹³C NMR data for plakinamine P (1) (CD₃OD, 600 MHz).

Position.	δC, Type	δH (J in Hz)	COSY	HMBC a
1a	38.2, CH2	2.01 (ddd, 13.8, 4.1, 4.1)	1b, 2ab	3, 5, 10
1b		1.21 (ddd, 13.8, 13.8, 3.4)	1a, 2ab	19
2a	23.7, CH2	1.95 (m)	1ab, 2b, 3	1, 3, 4, 10
2b		1.62 (m)	1ab, 2a, 3	1, 3, 10
3	66.8, CH	3.21 (m)	2ab, 4ab
4a	29.7, CH2	1.84 (m)	3, 4b, 5	2, 3, 10
4b		1.51 (m)	3, 4a, 5	3, 5
5	41.9, CH	1.51 (m)	4ab, 6ab	3
6a	30.6, CH2	1.86 (m)	5, 7	7, 8
6b		1.30 (m)	5, 7	4, 5
7	118.4, CH	5.20 (br d, 2.8)	6ab	5, 6, 9, 14
8	140.7, C
9	50.5, CH	1.73 (m)	11ab	8, 11
10	35.5, C
11a	22.7, CH2	1.63 (m)	9, 11b, 12ab	8, 9
11b		1.52 (m)	9, 11a, 12ab	8, 9, 10, 13
12a	40.9, CH2	2.09 (m)	11ab, 12b	9, 11, 13, 14
12b		1.28 (m)	11ab, 12a
13	44.7, C
14	56.3, CH	1.87 (m)	15ab	7, 8, 13
15a	24.2, CH2	1.57 (m)	14, 15b, 16ab	16
15b		1.46 (m)	14, 15a, 16ab
16a	29.2, CH2	1.93 (m)	15ab, 16b, 17	13, 15
16b		1.33 (m)	15ab, 16a, 17	15, 17, 20
17	57.2, CH	1.29 (m)	16ab, 20	12, 13, 16, 18, 20, 21
18	12.4, CH3	0.59 (s)		12, 13, 14, 17
19	13.4, CH3	0.86 (s)		1, 5, 9, 10
20	38.2, CH	1.45 (m)	17, 21, 22ab	22, 23
21	19.4, CH3	1.05 (d, 6.9)	20	17, 20
22a	36.8, CH2	1.46 (m)	20, 22b, 23ab
22b		1.17 (m)	20, 22a, 23ab	20, 21
23a	28.1, CH2	2.24 (ddd, 12.7, 12.7, 4.8)	22ab, 23b	22, 24, 25, 28
23b		2.07 (m)	22ab, 23a	22, 24, 25, 28
24	159.9, C
25	36.1, CH	2.38 (sep, 6.9)	26, 27	23, 24, 26/27, 28
26	22.6, CH3	1.09 (d, 6.9)	25	24, 25, 27
27	22.4, CH3	1.10 (d, 6.9)	25	24, 25, 26
28	111.7, CH	5.31 (t, 6.9)	29ab	23, 24, 25, 29
29	56.4, CH2	3.76 (dd, 7.6, 2.1)	28, 29b	24, 28, 30/31
30	42.7, CH3	2.84 (s)		29, 30/31
31	42.7, CH3	2.84 (s)		29, 30/31
32	40.5, CH3	2.85 (s)		3, 32/33
33	40.5, CH3	2.85 (s)		3, 32/33

^agHMBC correlations, optimized for 8 Hz, are from proton(s) stated to the carbons listed.