Fig. 2. The 1H–1H in Cytochalasans from the endophytic fungus Diaporthe ueckerae associated with the fern Pteris vittata

Fig. 2. The 1H–1H COSY (bold lines) and key HMBC (arrows) and NOESY (dashed arrows) correlations of 1 and 2 (the 3D structures represent the global energy minima afforded by DFT conformational analysis).