• 대한약학회:학술대회논문집
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• 대한약학회 2001년도 Proceedings of International Convention of the Pharmaceutical Society of Korea
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• pp.235.3-236
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• 2001

• Bulletin of the Korean Chemical Society
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• 제32권1호
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• pp.350-352
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• 2011

• 한국생명과학회:학술대회논문집
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• 한국생명과학회 2001년도 10주년 기념 국제학술 심포지움 및 추계학술대회
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• pp.30-30
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• 2001

• Natural Product Sciences
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• 제28권4호
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• pp.181-186
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• 2022

A germacrane-type sesquiterpenoid was isolated and purified from a methanol extract of the roots of Valeriana fauriei (RVF) through open column chromatography using silica gel. This compound was verified to be heishuixiecaoline A by spectroscopic analysis. This compound was isolated for the first time from RVF. Quantitative analysis of heishuixiecaoline A from RVF cultivated from three different regions (Eumseong, Jinbu, and Jinan regions) was performed by combining high-performance liquid chromatography with a photodiode array detector. The extract of RVF cultivated in the Jinbu region showed the highest content (9.23 mg/g). In addition, a significant amount of the compound was detected in all RVF samples, which could be expected since it is a characteristic compound of RVF. The sesquiterpenoid group heishuixiecaoline A was isolated from RVF, a resource for various pharmacological substances, and quantitative analysis of RVF cultivated from three different regions was performed. As a result of these experiments, basic data on RVF that can be used in the development and application of pharmaceuticals and health functional foods in the future were obtained.

• Bulletin of the Korean Chemical Society
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• 제35권5호
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• pp.1565-1567
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• 2014

• 한국자기공명학회논문지
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• 제18권2호
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• pp.82-88
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• 2014

Three bicyclic and one monocyclic sesquiterpenoids were isolated from the marine sponge Topsentia species. Their planar structures were completely determined from a combination of extensive 1D and 2D NMR experiments, and also the relative stereochemistry on the chiral centers were established by the ROESY experiment. Compound 1 was determined as a new stereoisomer. Furthermore, the NMR spectral data for compounds 2 and 4, of which have not been reported, were listed. Four compounds did not show any cytotoxicity, instead compound 4 exhibited moderate antifungal activity against Candida albicans.

• Natural Product Sciences
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• 제5권3호
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• pp.134-137
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• 1999

The chloroform extract of Pulicaria gnaphalodes yielded flavonoids (1-2), sesquiterpenoid (3), sterol (4), benzoic acid derivative (5) and fatty acids (6-7). Their structures were elucidated with the aid of NMR spectroscopy. The described compounds have not been reported so far from this source.

• 식물조직배양학회지
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• 제28권5호
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• pp.249-254
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• 2001

고추 (Capsicum annum L.)의 잎, 과실 및 배양세포를 대상으로 capsidiol의 생산을 유도하기 위해 자외선, cellulase 및 jasmonic acid (JA)의 영향을 구명하였다. 배양세포는 cellulase 0.05 mg/L나 JA 0.1 mg/L처리로 세포의 capsidiol 생산을 위한 유도가 가능하였다. Elicitor를 처리한 배양세포는 자체 생성한 capsidiol의 독성에 의해 활력이 급격히 감소하여 48시간 이후에는 세포활력을 거의 잃어버리는 것으로 나타났다. 자외선 스트레스의 처리는 48시간의 처리로 고추 잎의 capsidiol의 함량을 최고 45.4배까지 증가시켰다. Cellulase 0.05 mg/L또는 JA 1.0mg/L를 식물의 잎 표면이나 과실의 기부에 미세주사기로 주입하면, 잎은 elicitor를 주입한 부위로부터 합성된 capsidiol의 독성으로 병반이 확대되어 가는 것을 관찰할 수 있었으며, 과실에서도 elicitor의 주입에 의해 병반이 확산되며 elicitor를 주입한 과실에서 capsidiol의 생성이 확인되었다.

• 한국식물병리학회:학술대회논문집
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• 한국식물병리학회 1995년도 Proceedings of special lectures on Molecular Biological Approaches to Plant Disease National Agricultural Science and Technology Institute Suwon, Korea
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• pp.55-75
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• 1995

Induction of HMG-Co A reductase (HMGR) is essential for the biosynthesis of sesquiterpenoid phytoalexins and steroid derivatives in Solanaceous plants following wounding and pathogen infection. To better understand this complex step in stress-responsive isoprenoid synthesis, three classes of cDNAs for HMGR (hmg1, hmg2, and hmg3) were isolated from a potato tuber library. The potato cDNAs had extensive homology in open reading frames but had low homology in the 3'-untranslated regions. RNA gel blot analysis using gene-specific probes revealed that hmg1 is induced by wounding but wound induction is strongly suppressed by arachidonic acid or by inoculation with Phytophthora infestants. In contrast, hmg2 and hmg3 are slightly induced by wounding and strongly enhanced by arachidonic acid or inoculation. The induction and suppression of HMGR genes parallel the suppression of steroid and stimulation of sesquiterpenoid accumulations observed in earlier investigations. Treatment of the tuber disks with a low concentration of methyl-jasmonate doubled the wound induced accumulation of hmg1 transcripts and steroid-glycoalkaloid accumulation, but did not affect the abundance of transcripts for hmg2 or hmg3 nor induce phytoalexins. High concentration of methyl-jasmonate suppressed hmg1 mRNA and steroid-glycoalkaloid accumulation, induced hmg3 mRNA, and did not elicit phytoalexins. Lipoxygenase inhibitors suppressed the accumulation of of hmg1 transcripts and steroid-glycoalkaloids, which were restored by exogeneous methyl-jasmonate. Methyl-jasmonate applied together with arachidonic acid enhanced the elicitor induced accumulation of sesquiterpenes and sustained steroid-glycoalkaloid levels with transcript levels for the various HMGR mRNAs equal to or greater than wound-only treatment. These results domonstrate that the consequences of wound- and pathogen-responses of plants are different at the levels of gene expression and associated secondary metabolism.

• Bulletin of the Korean Chemical Society
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• 제30권9호
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• pp.2098-2100
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• 2009

A new tetrahydroanthracene, 3,6,9-trihydroxy-3,4-dihydroanthracen-1(2H)-one (1), six phenolics, moscatilin (2), gigantol (3), batatasin (4), moscatin (5), 9,10-dihydromoscatin (6), 10-dihydrophenanthrene-2,4,7-triol (7), and a sesquiterpenoid, corchoionoside C (8), together with two sterols $\beta$-sitosterol (9) and daucosterol (10), were isolated from the stems of Dendrobium polyanthum. Compounds 1 and 2 were assessed for cytotoxic activity against two human tumor cell lines (A549 and HL-60).