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.Compound 5 (endophenazine E) featured a phenazine nucleus plus a six-deoxyhexopyranose sugar as revealed by 1H NMR. Nevertheless, seven aromatic protons with overlapped and complex coupling split patterns proposed a monosubstituted instead of a disu