Kh? n?ng b?o m?t thông tin ng??i ch?i luôn ???c ?? cao s? one khi tham gia vào ho?t ??ng cá c??c.The constructions of the new compounds were being decided on the basis in their spectral information, including 1D and 2nd NMR, HR-MS and also the gene cluster responsible for the biosynthesis of phenazines was determined. All phenazine derivatives