Fraction 4 (1.8 g) was subjected to an RP-18 column (MeOH-H2O, 6:4), followed by silica gel column chromatography
eluting with CHCl3-MeOH (13:1) and CHCl3-MeOH (15: 1) to yield 2 (16 mg) and 1 (5 mg), respectively. Fraction 5 (2.0 g)
was purified by RP-18 (MeOH-H2O, 5:5) column chromatography to afford 9 (680 mg) and fraction 5c (800 mg) as a mixture. The latter was chromatographed on a silica gel column (CHCl3-MeOH, 10:1) to afford picraline (18 mg) and compactinervine (33 mg).