fractions B2A-B2D, based on silica TLC (CHCl3-MeOH-H2O, 7:3:1) results. Fraction B2A was subjected to silica gel CC with CHCl3-MeOH-H2O (40:10:1) as eluent and purified by a Sephadex LH-20 column with EtOH-H2O (6:4)
fractions B2A-B2D, based on silicaTLC (CHCl3-MeOH-H2O, 7:3:1) results. Fraction B2A wassubjected to silica gel CC with CHCl3-MeOH-H2O (40:10:1)as eluent and purified by a Sephadex LH-20 column withEtOH-H2O (6:4)