• 약학회지
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• 제33권5호
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• pp.285-289
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• 1989

Pontential mutagenic and antimutagenic activities of four steroidal saponins from Smilax china rhizomes were investigated. These saponins did not revealed mutagneicity in the Ames and SOS umu test. For antimutagenic activity by SOS umu test, two spirostanol glycosides, dioscin and gracillin, inhibited the activity of ${\beta}-galactosidase$ induced by AF-2, but their proto-type furostanol glycosides did not show this activity.

• Archives of Pharmacal Research
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• 제22권3호
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• pp.313-316
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• 1999

Certain steroids and triterpenoids isolated from diverse plant families were known to posses anti-inflammatory activity. In the course of finding new anti-inflammatory natural products, some steroidal and triterpenoid saponins were isolated and evaluated for their anti-inflammatory activity using in vivo mouse ear edema test. At the oral dose of 100 mg/kg, several steroidal saponins and triterpenoid saponins such as hederagenin glycosides showed significant inhibition of ear edema (20∼37% inhibition), though less potent than indomethacin and hydrocortisone.

• 약학회지
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• 제39권2호
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• pp.141-147
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• 1995

Four steroids have been isolated from the subterranean parts of Smilax nipponica Miquel (Liliaceae). The structures of these compounds were characterized on the basis of chemical and speectral data. They were $\beta$-sitosterol, $\beta$-sitosterol-3-O-$\beta$-D-glucopyranoside, neotigogenin-3-O-$\beta$-D-glucopyranoside and a new steroidal saponin designated as smilanippin A which was elucidated as neotigogenin-3-O-$\beta$-D-fucopyranosyl(1$\rightarrow$6)-$\beta$-D-glucopyranos ide.

• 생약학회지
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• 제24권3호
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• pp.187-191
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• 1993

Three compounds were isolated from the rhizomes of Dioscorea quinqueloba and identified as $diosgenin\;3-O-{\alpha}_-L-rhamnopyranosyl(1{\rightarrow}2)-{\beta}-_D-glucopyranoside$, dioscin and gracillin by chemical and spectroscopic means.

• Journal of Plant Biotechnology
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• 제32권3호
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• pp.217-223
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• 2005

액체배양을 통한 부채마의 부정근 배양시 첨가되는 생장 조절제의 종류와 농도에 따른 부정근의 생장과 steroidal saponin 생산과의 관계를 조사하였다. NAA와 BA 농도별 부정근 생장은 NAA를 단독으로 1.0 mg/L를 처리한 곳에서 가장 효과적이었으나 NAA에 BA를 첨가하면 부정근의 생장에 오히려 억제효과를 보였다. 20종의 각각 다른 배양주로부터 dioscin, prosapogenin A 및 prosapogenin C의 함량을 조사한 결과 배양주에 따라 큰 차이를 보였는데, 그 중 dioscin 함량이 건물당 2.5%로 가장 높았던 10번 배양주를 선발하였다. 부정근에 함유된 세 종류의 steroidal saponin 함량은 부정근의 생장이 왕성한 4주까지는 낮으나 부정근의 생장이 거의 정지되는 5주째에 급격히 증가하였다. Dioscin과 prosapogenin C의 함량은 NAA보다 IBA를 처리한곳에서 현저히 높으나 prosapogenin A의 함량은 이들 두성분의 종류와 농도에 영향을 받지 않았다.

• Natural Product Sciences
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• 제12권1호
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• pp.62-66
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• 2006

A steroidal saponin, $3-O-{\alpha}-L-rhamnopyranosyl-(1{\rightarrow}2)-[{\alpha}-L-rhamnopyranosyl-(1{\rightarrow}3)]-{\beta}-D-glucopyranosylpennogenin$ ;(1, spiroconazole A) was isolated from the tubers of Dioscorea bulbifera L. var sativa and $^1H-and\;^{13}C-NMR$ assignment was completed using HMBC correlation. In addition, four phenolic substances, 2,7-dihydroxy-4-methoxyphenanthrene (2), quercetin (3), $quercetin-3-O-{\beta}-D-glucopyranoside$ (4), and $quercetin-3-O-{\beta}-D-galactopyranoside$ (5) were also isolated.

• 생약학회지
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• 제20권2호
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• pp.76-82
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• 1989

Five known diosgenin glycosides have been isolated from the MeOH extract of Smilax china rhizomes and characterized as prosapogenin A of dioscin, dioscin, gracillin, methyl protogracillin, methyl protodioscin and its corresponding 22-hydroxy analog. This is the first isolation of the former four compounds from this plant. ${\beta}-Sitosterol\;glucoside$ was also isolated and identified.

• 한국자기공명학회논문지
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• 제23권4호
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• pp.87-92
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• 2019

Allium hookeri (Liliaceae) has been received the increasing attention as a bioactive resource due to its potent biological activities including anti-oxidant, anti-obesity, anti-microbial and lipid-regulating activities. The beneficial effects of A. hookeri are known contributed from the high content of organosulfur compounds in A. hookeri. Though a variety of articles demonstrated that A. hookeri contains 'saponin' as a bioactive constituent, the scientific evidence to prove it was limited. In the present study, we have attempted to identify saponin contained in A. hookeri through chromatographic isolation and NMR spectroscopic methods. As a result, a spirostane-type steroidal saponin (1) has been successfully isolated from the methanolic extract of A. hookeri roots. The structure of 1 was elucidated by extensive 1D and 2D spectroscopic methods including ¹H-NMR, ¹³C-NMR, ¹H-¹H COSY, HSQC, HMBC and NOESY; identified as (3β, 22R, 25S)-spirost-5-en-3yl O-6-deoxy-α-L-mannopyranosyl-(1→4)-O-6-deoxy-α-L-mannopyranosyl-(1→4)-O-[6-deoxy-α-L-mannopyranosyl-(1→2)]-β-D-gluco pyranoside. 1 showed the significant inhibitory activity on mushroom tyrosinase with IC₅₀ values of 248.7 μM while the inhibition on alpha-glucosidase was not significant.

• Archives of Pharmacal Research
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• 제12권4호
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• pp.295-299
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• 1989

Two novel steroidal saponins designated as spicatosides A(1) and B(2) were isolated from the tubers of Liriope spicata and their structures were elucidated as 25(S)-rus-cogenin -1-0- fJ - D-glucopyranosyl (1$\rightarrow$2)- [$\beta$ - D-xylopyranosyl (1$\rightarrow$3)] -$\beta$- D- fucopyranoside (1) and 26-0-$\beta$-D-glucopyranosyI25(S)-22-0-methyl-furost-5-en-l$\beta$, 3$\beta$, 26-trioll-0-fJ -D¬glucopyranosyl (1$\rightarrow$2)- [$\beta$- D-xylopyranosyl (1$\rightarrow$3)] - $\beta$- D- fucopyranoside (2), respectively.

• Natural Product Sciences
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• 제27권2호
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• pp.122-127
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• 2021

A new steroidal saponin, (23S,24S)-spirosta-5,25(27)-diene-1𝛽,3𝛽,23,24-tetrol 1-O-((2,3-diacetyl-α-L-rhamnopyranosyl)-(1→2)-[𝛽-D-xylopyranosyl-(1→3)]-α-L-arabinopyranoside)-24-O-𝛽-D-glucopyranoside (humilisoside) together with the known 𝛽-sitosterol 3-O-glucopyranoside, adenosine, dioscin, and methylprotodioscin were isolated from the leaves of Dracaena humilis. Their structures were elucidated by spectral techniques including mass spectrometry (ESIMS, HRESIMS, tandem MS-MS), 1D NMR (¹H, ¹³C NMR), 2D NMR (HSQC, ¹H-¹H COSY, HMBC, NOESY), chemical method as well as by comparison with spectroscopic data reported in the literature. The chemotaxonomic significance of the isolation of these compounds is discussed. This is the first report on the phytochemical investigation of D. humilis.