Separation methods of fractions 4 and 8 were developed using
HPLC. A total of 5 (compounds 1–5) isolates from fraction 4
(Fig. 1) and 3 isolates (compounds 6–8) from fraction 8 (Fig. 2)
were trapped separately on the SPE cartridges for further analysis
by NMR. The structures of 5 compounds from fraction 4 were
determined with the exception of peak X, which appeared to be a