Table 1.

¹H, ¹³C, and ¹⁵N NMR data for ligiamycins A (1) and B (2) in DMSO-d₆.

	Ligiamycin A (1) a		Ligiamycin B (2) b
Position	δC/δN, Type	δH, Mult (J in Hz)	δC, Type	δH, Mult (J in Hz)
1	165.1, C		165.2, C
1’	169.8, C		169.9, C
2	157.8, C		157.8, C
3	98.7, C		98.7, C
4	200.0, C		200.0, C
5	50.1, C		50.1, C
6	39.3, CH	1.55, t (10.0)	39.6, CH	1.56, t (10.0)
7a	27.2, CH2	1.88, m	26.8, CH2	1.92, m
7b		0.88, m c		0.86, m
8a	35.7, CH2	1.70, m	30.3, CH2	1.75, m
8b		1.00, ddd (16.0, 12.5, 3.5)		0.99, m
9	32.9, CH	1.48, m	40.9, CH	1.47, m
10a	42.1, CH2	1.77, m	36.8, CH2	1.84, m
10b		0.78, m		0.76, m
11	38.0, CH	1.75, m	37.7, CH2	1.73, m
12	129.0, CH	5.31, dd (10.0, 2.0)	129.1, CH	5.33, dd (10.0, 2.0)
13	130.2, CH	5.52, m	130.2, CH	5.52, m
14	34.6, CH	3.06, m	34.6, CH	3.06, m
15	14.8, CH3	1.27, s	14.8, CH3	1.28, s
16	22.5, CH3	0.88, m c	66.5, CH2	3.22, d (6.0)
17	18.5, CH3	0.68, d (7.0)	18.5, CH3	0.68, d (6.5)
1,1’-NH	146.8 d, NH	10.6, br s		10.6, br s
2-NH2a	103.9 d, NH2	9.16, s		9.16, s
2-NH2b		8.90, br s		8.89, br s
16-OH				4.36, br s

^{a 1}H and ¹³C NMR data were recorded at 800 and 200 MHz, respectively. ^{b 1}H and ¹³C NMR data were recorded at 850 and 225.5 MHz, respectively. ^c Overlapping signals. ^d The chemical shifts of ¹⁵N in the groups of N were determined based on the ¹H-¹⁵N HSQC NMR spectrum.