Table 7.

Incorporation of ¹³C-labeled precursors into rakicidin D

Position	δC	Relative enrichmentsa
		[2-13C]acetate	[1-13C]-L-serine
1	169.2	0.89	1.58
2	54.9	1.14	1.19
3	72.5	1.57	1.07
4	172.7	1.31	1.95
5	167.6	0.68	6.61
6	52.5	0.77	1.15
7	36.5	1.00	1.00
8	166.0	0.77	1.43
9	118.8	3.46	1.54
10	138.4	1.03	13.97
11	137.9	0.95	0.67
12	117.1	1.02	1.33
13	172.5	1.61	1.26
14	41.7	1.86	1.36
15	78.1	1.25	1.21
16	33.9	1.91	1.39
17	32.8	1.30	1.55
18	27.0	2.64	1.26
19	28.9	1.15	1.58
20	31.3	3.37	1.43
21	22.1	1.05	1.28
22	14.0	3.37	1.61
23	15.4	1.51	1.07
24	13.3	1.75	1.32

^{a 13}C signal intensity of each peak in the labeled 1 divided by that of the corresponding signal in the unlabeled 1, respectively, normalized to give an enrichment ratio of 1 for the unenriched peak of C7. The numbers in bold type indicate ¹³C-enriched atoms from ¹³C-labeled precursors