Fig. 4From: A coumarin analogue NFA from endophytic Aspergillus fumigatus improves drought resistance in rice as an antioxidantIdentification of fraction 2 as NFA. a Structure of NFA. b Structure of ENFA. Separation of NFA (c) and ENFA (d) by TLC. e Separation of fraction 2 by semi-preparative HPLC. f 1H-NMR and 13C-NMR data of compound fraction 2Back to article page