Table 1.

¹H, ¹³C, Correlated Spectroscopy (COSY) and Heteronuclear Multiple Bond Correlation (HMBC) NMR data of kiamycin (1) in CDCl₃.

Position	δC, assignm.	δH, mult. ( J in Hz)	1H–1H COSY	HMBC
1	156.7, Cq
2	110.5, CH	6.41, s br	H-4, 3-CH3	C-1, C-4, C-12b, 3-CH3
3	140.1, Cq
4	117.6, CH	6.50, s br	H-2, 3-CH3	C-2, C-5, C-12b, 3-CH3
4a	131.5, Cq
5	130.0, CH	6.74, d (9.5)	H-6	C-4, C-4a, C-6a, C-12b
6	134.9, CH	5.88, d (9.5)	H-5	C-4a, C-12a
6a	75.8, Cq
7	66.4, CH	4.85, d (1.5)	H-12a	C-6a, C-7a, C-8, C-11a, C-12a
7a	125.5, Cq
8	158.3, Cq
9	111.0, CH	6.85, d (8.3)	H-10, H-11	C-7a, C-8, C-11
10	130.1, CH	7.38, t (7.9)	H-9, H-11	C-8, C-11a
11	123.3, CH	7.18, d (7.9)	H-9, H-10	C-7a, C-9, C-12
11a	133.0, Cq
12	82.6, CH	6.00, d (10.4)	H-12a	C-1, C-6a, C-7a, C-11, C-11a, C-12a, C-12b
12a	44.0, CH	4.11, d (10.4)	H-7, H-12	C-6a, C-7, C-11a, C-12b
12b	122.0, Cq
8-OCH3	55.9, CH3	3.80, s		C-8
3-CH3	22.0, CH3	2.24, s	H-2, H-4	C-2, C-3, C-4