• 제목/요약/키워드: corosolic acid

검색결과 25건 처리시간 0.032초

Structure Determination of a New Lupane-type Triterpene, Tiarellic Acid, Isolated from Tiarella polyphylla

  • Lee, Hyeong-Kyu;Park, Si-Hyung;Oh, Sei-Ryang;Ahn, Kyung-Seop;Kim, Jae-Gil
    • Archives of Pharmacal Research
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    • 제25권1호
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    • pp.57-60
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    • 2002
  • A new 27-carboxylic lupane-type triterpene, tiarellic acid (1), was isolated from Tiarella polyphylla together with corosolic acid (2) and tormentic acid (3). Tiarellic acid was characterized as 3,23-dihydroxy-20(29)-lupen-27-oic acid and its NMR data were unambiguously assigned using 2-D NMR techniques.

이팝나무(Chionanthus retusus Lindl. & Paxton) 꽃으로부터 Triterpenoid 및 Sterol 화합물의 분리 및 동정 (Isolation and Identification of Triterpenoids and Sterols from the Flowers of Chionanthus retusus Lindl. & Paxton)

  • 정재우;서경화;오은지;이대영;백남인
    • Journal of Applied Biological Chemistry
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    • 제58권3호
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    • pp.237-240
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    • 2015
  • 이팝나무(Chionanthus retusus Lindl. & Paxton) 꽃은 실온에서 80% MeOH 수용액으로 추출하고 이 추출물을 EtOAC 분획, n-BuOH 분획, $H_2O$ 분획으로 나누었다. EtOAc 분획에 대하여 silica gel 및 ODS column chromatography를 반복 실시하여 4종의 화합물을 분리 및 정제하였다. nuclear magnetic resonance, infrared, 및 Electronic ionization mass spectrometer 등을 해석하여, ursolic acid (1), corosolic acid (2), ${\beta}$-sitosterol (3), 그리고 daucosterol (4)로 구조동정 하였다. 분리한 4종의 화합물은 이팝나무 꽃으로부터 이번 실험에서 처음 분리 되었다.

Triterpenes from Perilla frutescens var. acuta and Their Cytotoxic Activity

  • Woo, Kyeong Wan;Han, Ji Young;Choi, Sang Un;Kim, Ki Hyun;Lee, Kang Ro
    • Natural Product Sciences
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    • 제20권2호
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    • pp.71-75
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    • 2014
  • Nine triterpenes were isolated from the petroleum ether and MeOH extract of Perilla frutescens var. acuta leaves. Their structures were determined to be arjunic acid (1), maslinic acid (2), oleanolic acid (3), euscaphic acid (4), tormentic acid (5), 3-O-trans-p-coumaroyltormentic acid (6), 28-formyloxy-$3{\beta}$-hydroxy-urs-12-ene (7), ursolic acid (8), and corosolic acid (9) by spectroscopic methods. The compounds 1, 2, 4, 6, and 7 were isolated for the first time from this plant and the Genus Labiatae. The isolated compounds (1-9) were tested for cytotoxicity against four human tumor cell lines (A549, SK-OV-3, SK-MEL-2, and HCT-15) in vitro using a Sulforhodamin B bioassay.

Ursane-Type Triterpenoids from the Aerial Parts of Potentilla discolor

  • Jang, Dae-Sik;Kim, Jong-Min;Lee, Ga-Young;Kim, Joo-Hwan;Kim, Jin-Sook
    • Journal of Applied Biological Chemistry
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    • 제49권2호
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    • pp.48-50
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    • 2006
  • Four ursane-type triterpenoids, ursolic acid (1), 23-hydroxyursolic acid (2), corosolic acid (3), and tormentic acid (4), and a phytosterol, ${\beta}-sitosterol-3-O-{\beta}-D-glucoside$, were isolated from an EtOAcsoluble extract of the aerial parts of Potentilla discolor. The structures of 1-4 were identified by spectroscopic methods, particularly by extensive NMR studies. This is the first report on the isolation of compounds 1-4 from this plant.

Chemicals Constituents from Leaves of Diospyros iturensis (Gürke) Letouzey & F. White and their Biological Activities

  • Feusso, Hermann Marius Feumo;Dongmo, Jean de dieu;Djomkam, Hermine Laure Maza;Akak, Carine Mvot;Lateef, Mehreen;Ahmed, Ayaz;Azebaze, Anatole Guy Blaise;Waffo, Alain Francois Kamdem;Ali, Muhammad Shaiq;Vardamides, Juliette Catherine
    • Natural Product Sciences
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    • 제26권4호
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    • pp.311-316
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    • 2020
  • The chemical investigation of the methanolic crude extract of leaves of Diospyros iturensis gave us 15 known secondary metabolites identified as mixture of α-amyrenone (1) and β-amyrenone (2), β-amyrin (3), mixture of β-sitosterol (4) and stigmasterol (5), betulin (6), uvaol (7), betulinic acid (8), ursolic acid (9), corosolic acid (10), actinidic acid (11),11-O-p-hydroxybenzoylbergenin (12), bergenin (13) and mixture of stigmasterol glucoside (14) and β-sitosterol glucoside (15) respectively. The structures of secondary metabolites were elucidated with the help of NMR and mass spectral data and by comparison of their spectral data with literature. Among the fifteen isolated compounds, four compounds were identified for the first time in Diospyros genus. These included uvaol (7), corosolic acid (10), actinidic acid (11) and 11-O-p-hydroxybenzoylbergenin (12). Crude methanolic extract of leaves and four isolated compounds including betulin (6), betulinic acid (8), 11-O-p-hydroxybenzoylbergenin (12) and bergenin (13) were evaluated for their antiproliferative activity against two cancer cell lines CAL-27 and NCI-H460 by the MTT assay, antioxidant potential and inhibitory activity against the lipoxygenase and urease enzymes, respectively. The results indicated that the methanolic crude extract of leaves exhibited moderate antioxidant activity and was inactive against the two cancer cell lines. Betulin (6), 11-O-p-hydroxybenzoylbergenin (12) and bergenin (13) exhibited moderate antioxidant and lipoxygenase inhibition with IC50 = 65.8, 85.6, 82.5 μM and IC50 = 58.5, 95.2, 76.2 μM, respectively. Furthermore, 11-O-p-hydroxybenzoylbergenin (12) and bergenin (13) exhibited moderate urease inhibition activity with IC50 values of 45.6 μM and 49.8 μM, respectively.

참꽃나무 잎 추출물 유래 항산화 및 항균 활성 성분 (Anti-oxidative and Anti-bacterial Constituents from the Extracts of Rhododendron weyrichii Leaves)

  • 김정은;조성미;이남호
    • 대한화장품학회지
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    • 제45권4호
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    • pp.341-351
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    • 2019
  • 본 연구에서는 참꽃나무 잎 추출물의 항산화 및 항균 활성을 확인하고 유효성분을 분리하여 화학구조를 동정하였다. 참꽃나무 잎 에탄올 추출물 및 용매 분획물의 DPPH, ABTS+ 라디칼 소거 활성을 측정한 결과 추출물 및 ethyl acetate (EtOAc), n-butanol (BuOH) 분획물의 우수한 라디칼 소거 활성을 확인하였다. 또한 표피포도상구균과 여드름균을 이용한 활성 실험 결과, 추출물 및 n-hexane (Hex), EtOAc 분획물에서 항균 활성이 나타났다. EtOAc 분획물의 활성 성분을 규명하기 위해 컬럼 크로마토그래피를 수행하여 5개의 화합물을 분리하였다; ursolic acid (1), corosolic acid (2), asiatic acid (3), astragalin (4), isoquercetin (5). 분리된 화합물 1-5는 모두 참꽃나무에서 처음으로 분리되었다. 분리된 화합물에 대한 항산화 활성 측정 결과 화합물 4, 5의 라디칼 소거 활성이 우수하였으며, 화합물 3은 항균 효과가 있음을 확인하였다. 또한 UPLC 분석을 통해 참꽃나무 잎에서 분리된 astragalin의 함량을 측정한 결과 추출물에서 8.1 mg/g, EtOAc 분획물에서 34.8 mg/g이 함유되어 있는 것으로 확인되었다. 이상의 연구 결과를 바탕으로 참꽃나무 잎 추출물을 이용한 항산화 및 항균 효과를 갖는 천연 화장품 소재로의 개발이 가능할 것이라 사료된다.

Comparison of Chemicals in Lagerstroemia speciosa (L.) Pers. at Growing Stage Levels by GC-MS

  • Choi, Joo-Soo;Ku, Pyung-Tae;Cho, Kyung-Soon;Huh, Man-Kyu
    • 한국작물학회지
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    • 제55권3호
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    • pp.200-206
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    • 2010
  • Banaba, Lagerstroemia speciosa (L.) Pers. (Lythraceae) is a tree that grows in the tropic islands of the Pacific. This plants are used for medical purposes in the world. The components of L. speciosa were analyzed for the contents according to growing stages at leaves. The distributions of the corosolic acid ($2{\alpha}$, $3{\beta}$-dihydroxyurs-12-en-28-oic acid), phytol, campestrol, and vitamin E were rich among samples in this study. These were contained much fatty acids. The mean content of palmitic acid was from 2.4% across all growing stages, varying from 2.15% for young leaves with the lowest content and 2.86% for fallen leaves with the highest content. Oleic acid, linoleic acid, and linolenic acid were contained nearly mean 2.0% in all leaves of banaba. Our results have shown that the phytochemical profile of young L. speciosa leaves differs quite radically from that of old L. speciosa leaves. In addition, these subdividing results according to plant growth should allow future researches to conduct targeted experimental studies and use of particular medical components of interest, examining chemical variation on the inter-developmental levels.

Inhibitory Effect on TNF-${\alpha}$-Induced IL-8 Production in the HT29 Cell of Constituents from the Leaf and Stem of Weigela subsessilis

  • Thuong Phuong Thien;Jin WenYi;Lee JongPill;Seong RackSeon;Lee Young-Mi;Seong YeonHee;Song KyungSik;Bae KiHwan
    • Archives of Pharmacal Research
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    • 제28권10호
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    • pp.1135-1141
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    • 2005
  • Twelve compounds were isolated from the MeOH extract of the leaf and stem of the Korean endemic plant Weigela subsessilis L. H. Bailey. Their chemical structures were elucidated on the basis of physicochemical and spectroscopic data and by comparison with those of published literatures. These compounds were identified as three sterols, ${\beta}$-sitosterol acetate (2), ${\beta}$-sitosterol (3), daucosterol (11), eight triterpenoids, squalene (1), ursolic acid (4), ilekudinol A (5), corosolic acid (6), ilekudinol B (7), esculentic acid (8), pomolic acid (9), asiatic acid (10), and one iridoid glycoside, alboside I (12). This is the first report pertaining to the isolation of these compounds from Weigela subsessilis L. H. Bailey. In addition, three compounds 7, 9, and 12 were found to display a strong inhibitory effect on the production of IL-8 in the HT29 cells stimulated by TNF-${\alpha}$.

추출용매 변화에 따른 바나바(Lagerstroemia speciosa Pers.) 잎 추출물의 항당뇨 효과 (Anti-diabetic Effects of Banaba Leaf Extracts (Lagerstroemia speciosa Pers.) through Solvents)

  • 김균하;노상근;이춘일;김춘봉;김안드레;최원철
    • 생명과학회지
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    • 제18권9호
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    • pp.1305-1311
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    • 2008
  • 본 연구는 바나바 잎 추출 용매에 따른 항당뇨 효과에 관한 것으로 세포 독성 실험을 통하여 인체에 대한 독성이 없음을 확인하였고 $\beta$-cell 인슐린 분비 실험을 통하여 항당뇨 효과를 알아보았다. 또한 당뇨 유발쥐를 이용한 인슐린 분비 실험, 체중변화 측정, 혈중 및 혈청의 glucose 농도, 총콜레스테롤 수치, HDL-cholesterol 농도, triglyceride 농도, free fatty acid 농도, langerhans islet에서의 인슐린 분비 의 확인을 통해 혈당조절 효과를 비교하였다. 물 혹은 에탄올을 단독으로 이용하여 추출한 추출물이나 70%, 90% 에탄올로 추출한 추출물 보다 열수로 먼저 추출한 후 에탄올로 다시 추출하여 혼합안 추출물이 항당뇨 효과가 더 뛰어남을 알 수 있었다. 이는 친수성(hydrophilic) 유효성분들과 소수성(hydrophobic) 유효성분들의 추출 유무나 함량에 의한 것이다. 특히, 많은 문헌에 언급된 코로소린산이라는 단일 성분(unique)에 의한 항당뇨 효과라기보다는 친수성 및 소수성 폴리페놀 및 항산화성분과 같은 유효성분들이 조합되어(mixture) 항당뇨 효과에 영향을 미치는 것으로 사료된다.

등수국 잎 추출물 유래 항염 및 항균 활성 성분 (Anti-inflammatory and Anti-bacterial Active Ingredients Derived from the Extract of the Leaves of Hydrangea Petiolaris)

  • 조성미;김정은;이남호
    • 대한화장품학회지
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    • 제46권3호
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    • pp.207-218
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    • 2020
  • 본 연구에서는 등수국 잎 추출물의 항염 및 항균 활성을 확인하고 유효성분을 분리하여 화학구조를 동정하였다. RAW 264.7 세포를 이용한 항염 활성 실험 결과, n-hexane (Hex) 및 ethyl acetate (EtOAc) 분획물이 세포 독성 없이 nitric oxide (NO)의 생성 및 iNOS 단백질의 발현을 농도의존적으로 억제시키는 것을 확인하였다. 추가적인 항염 기전 연구 결과, n-Hex 및 EtOAc 분획물이 전염증성 cytokine (TNF-α, IL-1β, IL-6)의 생성을 억제하는 것을 확인하였다. 또한 표피포도상구균과 여드름균을 이용한 활성 실험 결과, 추출물 및 n-Hex, EtOAc, n-butanol (BuOH) 분획물에서 항균 활성이 나타났다. n-Hex 및 EtOAc 분획물의 활성 성분을 규명하기 위해 컬럼 크로마토그래피를 수행하여 4 개의 화합물을 분리하였다; phytol (1), corosolic acid (2), asiatic acid (3) 및 1-O-p-coumaroyl-β-D-glucopyranoside (4). 이들 화합물은 모두 등수국에서 처음으로 분리된 물질이다. 또한 HPLC 분석을 통해 등수국 잎 추출물에서 분리된 화합물의 함량을 측정한 결과 phytol (1) 이 27.8 mg/g 함유되어 있는 것으로 확인되었다. 이상의 연구 결과를 바탕으로 등수국 잎 추출물을 이용한 항염 및 항균 효과를 갖는 천연 화장품 소재로의 개발이 가능할 것이라 사료된다.