Figure 2.

Secondary metabolites from the ΔflsN3 mutant. (a) HPLC analysis of the metabolite profiles of the wild type strain and the ΔflsN3 mutant with the detection wavelength at 354 nm; the N–N bond-containing products (pyrazolofluostatin A and fluostatin R, Supplementary Figure S2) were marked; the uncharacterized compound denoted with an asterisk was related to salinipyrone A (8). (b) Chemical structures of compounds isolated from the ΔflsN3 mutant.