• 생약학회지
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• 제32권3호통권126호
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• pp.238-241
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• 2001

The leaves and flowers of Hemisteptia lyrata Bunge (Compositae) have been used for cure sour throat and treat tumors in traditional chinese medicine. As a result of the chemical investigation, two compounds were isolated from the $CHCl_3$ extract of the flowers of H. lyrata. On the basis of spectroscopic experiments, their structures were identified as 8-hydroxy-3-keto-10(14)-guaien-12,6-oxide (Isoamberboin) and 3,8-dihydroxy-4(15),10(14),11(13)-guaiatrien-12,6-oxide (8-Hydroxyzaluzanin C). They were first isolated from the genus Hemisteptia.

• 생약학회지
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• 제33권2호통권129호
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• pp.92-95
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• 2002

Three diene-yn-diene chromophore type compounds were isolated from the flowers of Hemisteptia lyrata Bunge. On the basis of spectral data, isolated compounds were identified as heptadeca-1,7,9,13,15-pentaen-11-yne, 14-acetoxy-2,4,8,10-tetradecatetra-ene-6-yne and 14-hydroxy-2,4,8,10-tetradecatetraene-6-yn. They were first isolated from the genus of Hemisteptia.

• Journal of Applied Biological Chemistry
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• 제49권1호
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• pp.16-20
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• 2006

The flowers of Hemisteptia lyrata B. afforded two known acylglycerylgalactosides, 2',3'-di-O-(9Z,12Z,15Z-octadecatrienoyl)glyceryl ${\beta}$-D-galactopyranoside (1) and 2'-O-(9Z,12Z,15Z-octadecatrienoyl)glyceryl ${\beta}$-D-galactopyranoside (2), and a new sesquiterpene galactopyranoside, 7-eudesmene-1${\beta}$,4${\beta}$-diol-1-O-${\beta}$-D-galactopyranoside (3). This is the first time that galactopyranosides (1-3) have been isolated from the genus Hemisteptia. Their structures and stereochemistry were elucidated by 1D and 2D NMR data, including COSY, NOESY and HMBC experiments.

• Applied Biological Chemistry
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• 제42권2호
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• pp.176-179
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• 1999

지칭개, 구절초 및 산국에서 분리한 9종류의 sesquiterpene lactones에 대한 생리활성 실험의 일환으로, 10종의 세균에 대한 항세균활성과 6종의 식물병원균에 대한 항진균활성을 조사하였다. 항세균 활성실험에서는 지칭개에서 분리한 hemistepsin A와 B 그리고 산국에서 분리한 tulipinolide가 시험균주 전반에 대하여 강한 활성을 보였으며, 항진균 활성실험에서는 hemistepsin B, angeloylcumambrin B, tigloylcumambrin B, 그리고 costunolide가 광범위한 활성을 보였다. 또한, 항세균 활성실험과 항진균 활성실험 모두 비교적 뚜렷한 균주특이성을 나타내었다.

• 한국생명과학회:학술대회논문집
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• 한국생명과학회 2001년도 제31회 학술심포지움 및 춘계학술대회
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• pp.67-67
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• 2001

• 생약학회지
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• 제29권3호
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• pp.243-247
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• 1998

A diverse panel of human tumor cell lines and a mouse melanoma cell line (B16-F1) were used for the cytotoxicity test of the nine sesquiterpene lactones with ${\beta}-methylene-{\gamma}-lactone$ group isolated from Hemisteptia lyrata, Chrysanthemum zawadskii and Chrysanthemum boreale. In the cell adhesion inhibitory activity test against B16-F1 mouse melanoma cell, hemistepcin B, cumambrin B, costunolide and tulipinolide were shown significant activities with $IC_{50}$ range of 2.2, 4.1, 0.9 and $0.3\;{\mu}g/ml$, respectively. In the cytotoxicity test against human tumor cells, the most active compound was costunolide having $IC_{50}$ values of below $0.3\;{\mu}g/ml$ against all the tested cell lines except for UACC62. Cumambrin A, hendelin and costunolide exhibited more strong activity against HCT15 and UO-31 cell lines than a positive control, adriamycin. All tested compounds showed an $IC_{50}$ values of below $5.0\;{\mu}g/ml$ against all the tested cell lines.

• 생약학회지
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• 제30권1호
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• pp.70-73
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• 1999

Nine sesquiterpene lactones, which were isolated from Hemisteptia lyrata Bunge. Chrysanthemum zawadskii Herbich var. latilobum Kitamura and Chrysanthemum boreale Makino were evaluated for the farnesyl-protein transferase (FPTase) inhibitor, conducted by the scintillation proximity assay (SPA). The angeloylcumambrin B and tigloylcumambrin B inhibited a recombinant rat FPTase with $IC_{50}$ value of $78\;{\mu}g/ml$ $(225\;{\mu}M)$ and $90\;{\mu}g/ml$ $(260 \;{\mu}M)$, respectively.

• 생약학회지
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• 제30권1호
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• pp.74-78
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• 1999

Nine sesquiterpene lactones, which were isolated from Hemisteptia lyrata Bunge, Chrysanthemum zawadskii Herbich var. latilobum Kitamura and Chrysanthemum boreale Makino were evaluated for the inhibition upon the nitric oxide release from the Raw cell and for the ACAT (acyl Co A: cholesterol acyltransferase) inhibitory assay. In the nitric oxide release inhibitory experiment, hemistepsin B $(IC_{50}\;=\;0.05\;{\mu}g/ml,\;0.15\;{\mu}M),$ cumambrin B, tulipinolide and costunolide exhibited strong inhibition with $IC_{50}$ values $0.05\;{\mu}g/ml\;(0.15\;{\mu}M),\;0.1\;{\mu}g/ml\;(0.38\;{\mu}M),\;0.2\;{\mu}g/ml\;(0.69\;{\mu}M)$ and $0.2\;{\mu}g/ml(0.86\;{\mu}M),$ respectively. In the ACAT inhibitory assay, angeloylcumambrin B, tigloylcumambrin B, tulipinolide and costunolide exhibited strong inhibition with $IC_{50}$ values $33\;{\mu}g/ml\;(95.4\;{\mu}M),\;22\;{\mu}g/ml\;(63.6\;{\mu}M),\;38\;{\mu}g/ml\;(151\;{\mu}M)$ and $17\;{\mu}g/ml(73.3\;{\mu}M),$ respectively, whereas other compounds did not exhibit significant activity against ACAT above $100\; {\mu}g/ml.$.