Fraction 7 (F07, 2.3 g) was repeatedly recrystallized from MeOH to yield
7 (1.23 g), which was identified and characterized as fucosterol (Sheu et al., 1997)
by spectroscopic methods, including 1H and 13C NMR as well as by comparisons
with published spectral data and TLC. The respective spectral data of isolates 1–7
are available upon request from the corresponding authors. The structures are
shown in Fig. 1.