Table 1.
Agar diffusion assay with the lactones released by Ruegeria pomeroyi.a
| Compound | E. colib | B. megateriumc | M. violaceumd | B. cinereae | C. fuscaf |
| 7/8g | 0 | 0 | 0 | 0 | 6 (pi) |
| 9/10g | 0 | 0 | 0 | 0 | 6 (pi) |
| 11 | 0 | 0 | 0 | 0 | 7 (pi) |
| penicillin | nt | 18 | 0 | nt | 0 |
| tetracycline | nt | 18 | 0 | nt | 10 (pi) |
| nystatin | nt | 0 | 20 | nt | 0 |
| actidione | nt | 0 | 50 | nt | 35 |
| MeOH | 0 | 0 | 0 | 0 | 0 |
aRadius of inhibition zones in mm, pi = partial inhibition, nt = not tested; bEscherichia coli K12; cBacillus megaterium; dMicrobotryum violaceum; eBotrytis cinerea; fChlorella fusca; gdiastereomeric mixtures as obtained in the isomerisations of 7 and 9 were used.