Fraction PSHD and PSHF were combined (421.5 mg) and subjected to CC over SiO2 (70-230 mesh, 40 g)to yield nine fractions. The seventh fraction was concentrated and recrystallized from CH2Cl2-hexane to give β-sitosterol (Fig 1- Compound 1) (95.1 mg,0.0059%) as white crystalline needles with melting point (mp) 133-134oC (lit. [ 14] 138-139oC).
Fraction PSH I (248.5 mg) was chromatographed over SiO2 (30 g) CC with CH2Cl2 (100%) as eluent to give 156 fractions. The combined fractions 17-39 was concentrated