Fig. 4.
Formation of 1,2′-di-acetyl-NEA by Eis_Ava monitored by a TLC assay and confirmed by NMR spectroscopy. Lanes 1–6: a time course showing the mono- and di-acetyl-NEA products of the Eis_Ava reaction. Lanes 7–12: controls for mono- and di-acetylation of NEA by AAC(2′)-Ic, AAC(3)-IV, and AAC(6′)-Ie used individually or sequentially.