Title:
PROCESS FOR PREPARING DIBENZOCYCLOOCTADIENE TYPE LIGNAN
Document Type and Number:
WIPO Patent Application WO/1990/001487
Kind Code:
A1
Abstract:
A dibenzocyclooctadiene type lignan can be effectively obtained by extracting a plant containing the same with a solvent having a low polarity, subjecting the extract to partition extraction at least once using a water-insoluble solvent having a low polarity and a water-soluble solvent having a high polarity, and recovering the dibenzocyclooctadiene type lignan from the layer of the water-soluble solvent having a high polarity.
Inventors:
IKEYA YUKINOBU (JP)
KANATANI HIROTOSHI (JP)
NAKAJIMA KAORU (JP)
MITSUHASHI HIROSHI (JP)
KANATANI HIROTOSHI (JP)
NAKAJIMA KAORU (JP)
MITSUHASHI HIROSHI (JP)
Application Number:
PCT/JP1989/000809
Publication Date:
February 22, 1990
Filing Date:
August 08, 1989
Export Citation:
Assignee:
TSUMURA & CO (JP)
International Classes:
A61K31/70; A61K31/76; A61K36/00; A61K36/18; A61K36/79; A61P1/04; A61P1/16; C07D317/70; A61P25/04; C07C41/34; C07C43/21; C07C43/23; C07D493/04; C07G1/00; C07G99/00; C08H7/00; (IPC1-7): C07G17/00; C07C43/21; C07C43/23; C07C41/34; C07D317/70; A61K35/78
Foreign References:
| JPS63119422A | 1988-05-24 | |||
| JPS61282315A | 1986-12-12 | |||
| JPS61189221A | 1986-08-22 | |||
| JPH05522612A | ||||
| JPH05432462A |
Other References:
SHIBATA SHOJI (Auther) (Yakuyo Tennen Bussitsu) 20 August 1982 (20.08.82) Nanzando, pages 101,105
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