Saponins from Vietnamese Ginseng, Panax vietnamensis HA et GRUSHV. Collected in Central Vietnam. I
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概要
- 論文の詳細を見る
From rhizomes and roots of Panax vietnamensis HA et GRUSHV., Araliaceae, commonly known as Vietnamese Ginseng, two new acetylated saponins named vina-ginsenoside-R1 (13) and vina-ginsenoside-R2 (15) were isolated. On the basis of chemical and spectral data, 13 was formulated as monoacetyl 24(S)-pseudo-ginsenoside-F_<11> and 15 was proved to be monoacetyl majonoside-R2.Besides the two new saponins and β-sitosteryl-3-O-β-D-glucopyranoside, sixteen known saponins were also isolated and identified. Dammarane saponins : ginsenoside-Rh_1 and 20(R)-ginsenoside-Rh_1 (1), ginsenosides-Rg_1 (2), -Re (3), -Rd(6), -Rb_3 (7), -Rb_2 (8), -Rb_1 (9), pseudo-ginsenoside-RS_1 (=monoacetyl ginsenoside-Re, 4), notoginsenosides-R1 (5) and -Fa (10). Ocotillol-type saponins : pseudo-ginsenoside-RT_4 (11), 24(S)-pseudo-ginsenoside-F_<11> (12), majonosides-R1 (16) and -R2 (14). Oleanolic acid saponins : ginsenoside-Ro (=chikusetsusaponin V, 17) and hemsloside-Ma3 (18), a saponin previously isolated from a cucurbitaceous plant, Hemsleya macrosperma C. Y. WU.Despite having large horizontally elongated rhizomes, the underground part of this plant contains mainly dammarane saponins and a small amount of oleanolic acid saponins. In addition, the yield of ocotillol-type saponins, especially majonoside-R2,is surprisingly very high (more than 5% and ca. half of the total yield of saponin). This characteristic saponin composition has made Vietnamese Ginseng an interesting species among Panax spp.
- 社団法人日本薬学会の論文
- 1993-11-15
著者
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笠井 良次
Institute of Pharmaceutical Sciences, Hiroshima University, School of Medicine
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山崎 和男
Institute of Pharmaceutical Sciences, Hiroshima University School of Medicine
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Nguyem D
Ho Chi Minh City Univ. Medicine And Pharmacy Ho Chi Minh City Vnm
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伊藤 優子
Institute Of Pharmaceutical Sciences Hiroshima Univeristy School Of Medicine
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MINH DUC
The Science-Production Centre of Vietnamese Ginseng, Hochi Min City Universit6y of Medicine and Phar
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THOI NHAM
The Science-Production Centre of Vietnamese Ginseng, Hochi Min City Universit6y of Medicine and Phar
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田中 治
Suzugamine Women's College
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田中 治
広島大
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笠井 良次
広島大・医
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山崎 和男
Institute Of Pharmaceutical Sciences Hiroshima University School Of Medicine
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Minh Duc
The Science-production Centre Of Vietnamese Ginseng Ho Chi Minh City University Of Medicine And Phar
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田中 治
Institute Of Pharmaceutical Sciences Hiroshima University School Of Medicine
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Thoi Nham
ベトナム人参研
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Nham N
ベトナム人参研
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