The MeOH extract was concd under red.
pres., and the viscous concentrate (680 g) was partitioned
between H20 and n-BuOH. CC of the n-
BuOH-soluble phase (320 g) on silica gel (600 g) and
elution with a gradient mixt. of CHC13-MeOH (9:1;
4: 1; 2: 1) and, finally, with MeOH gave 5 frs (I-V).
Fr. V (90 g) was passed through a Diaion HP-20 (300
g) column eluting with H20 with increasing amounts
of MeOH in H20 and, finally, with MeOH. The 80%
MeOH and MeOH eluate frs were combined and it
was chromatographed on ODS silica gel eluting with
MeOH-H20 (3:2) to give frs V(a) and V(b). Fr; V(a)
was subjected to CC on silica gel eluting with CHC13-
MeOH-H20 (30: 10: 1) to give 4 with a few impurities,
final purification of which was established by prep.
HPLC using MeCN-H20 (7:13) as the solvent to yield4 (127 mg) as a pure compound. Fr. V(b) was further
fractionated by subjecting it to silica gel CC eluting
with CHCI3-MeOH-H20 (30:10:1) into frs V(b-1)-
V(b-3). Fr, V(b-1) was subjected to silica gel CC eluting
with CHC13-MeOH-H20 (30:10:1) and prep.
HPLC with MeOH-H20 (9: 1) to give a mixt. of 2
and 3, which was sepd by prep. TLC developing with
CHC13-Et20-MeOH-H20 (70:40:35:1) to yield 2
(54.8 mg) and 3 (10.4 mg) as pure compounds. Fr.
V(b-2) was subjected to a silica gel column eluting
with CHC13-MeOH-H20 (30:10: 1) and prep. HPLC
with MeOH-H20 (9:1) to yield 1 (47.4 mg). Fr. V(b-
3) was purified by prep. HPLC eluting with MeCNH20
(7: 13) to yield 5 (48.3 mg).