The basic solution was partitioned with EtOAc, affording a two-phase mixture including the aqueous phase and the EtOAc/organic phase. The organic fraction (23 g) was collected and then dissolved in MeOH, and the resulting solution was sunia to pH9–10. The basic solution was partitioned with EtOAc, affording a two-phase mixture including the aqueous phase and the EtOAc/organic phase. The organic fraction (23 g) was collected and then dissolved in MeOH, and the resulting solution was subjected to column chromatography over silica gel eluting with CHCl
/MeOH (from1:0–0:1) to afford five fractions (Fr. A–D). Fr. A (7.2 g) was subjected to RP-18 column chroma-
3bjected to column chromatography over silica gel eluting with CHCl
/MeOH (from1:0–0:1) to afford five fractions (Fr. A–D). Fr. A (7.2 g) was subjected to RP-18 column chroma-
3