Journal of Applied Biological Chemistry

The Korean Society for Applied Biological Chemistry (한국응용생명화학회)
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Lipids from the rhizome of Cnidium officinalis Makino

천궁으로부터 lipid 의 분리 동정

  • Kim, Hyoung-Geun (Graduate School of Biotechnology and Department of Oriental Medicinal Biotechnology, Kyung Hee University) ;
  • Jeon, Hyeong-Ju (Department of Food & Nutrition, Jangan University) ;
  • Nguyen, Trong Nguyen (Graduate School of Biotechnology and Department of Oriental Medicinal Biotechnology, Kyung Hee University) ;
  • Lee, Dae Young (Department of Herbal Crop Research, National Institute of Horticultural and Herbal Science, RDA) ;
  • Baek, Nam-In (Graduate School of Biotechnology and Department of Oriental Medicinal Biotechnology, Kyung Hee University)
  • Received : 2021.08.26
  • Accepted : 2021.09.24
  • Published : 2021.12.31
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Abstract

The rhizomes of Cnidium officinalis were extracted in aqueous MeOH, and the concentrate was fractionated via systematic solvent fractionation to EtOAc, n-BuOH, and aqueous fractions. The repeated column chromatography of EtOAc and n-BuOH fractions using silica gel, octadecyl silica gel, and Sephadex LH-20 as stationary phase to afford five lipids. They were identified to be methyl linoleate (1), linoleic aicd (2) 6-linoleoyl-𝛼-D-glucopyranosyl 𝛽-D-fructofuranoside (3), 1-linolenoyl-3-(𝛼-D-galactopyranosyl (1→6)-𝛽-D-galactopyranosyl) glycerol (4), and 1-linoleoyl-3-(𝛼-D-galactopyranosyl (1→6)-𝛽-D-galactopyranosyl) glycerol (5) on the basis of spectroscopic data such as IR, MS, and Nuclear magnetic resonance (NMR). Compounds 1 and 3-5 were isolated for the first time from this plant in this study. The NMR data of fatty acids 1 and 2 reported in literatures are different each other. Authors identified the NMR data without ambiguity. Compound 3, a conjugate of sucrose and fatty acid, and compounds 4 and 5, digalactosyl monoglyceride, are very rarely occurred in natural source. Through the immune enhancement and anticancer activity of the reported lipid compounds, the potential as various pharmacologically active materials of Cnidium officinalis rhizome can be expected.

천궁의 근경을 EeOH 수용액으로 추출하였으며, 얻어진 추출물을 용매계통분획방법을 이용하여 EtOAc 분획, n-BuOH 분획 및 물 분획으로 나누었다. EtOAc 분획과 n-BuOH 분획에 대하여 silica gel, octadecyl silica gel 및 Sephadex LH-20을 정지상으로 사용하여 칼럼크로마토그래피를 반복 수행한 결과 5종의 lipid를 분리하였다. 5종 화합물은 IR, MS 및 NMR 데이터를 해석하여 각각 methyl linoleate (1), linoleic aicd (2) 6-linoleoyl-𝛼-D-glucopyranosyl 𝛽-D-fructofuranoside (3), 1-linolenoyl-3-(𝛼-D-galactopyranosyl (1→6)-𝛽-D-galactopyranosyl) glycerol(4) 및 1-linoleoyl-3-(𝛼-D-galactopyranosyl (1→6)-𝛽-D-galactopyranosyl) glycerol (5)로 구조동정하였다, 화합물 1과 3-5는 천궁에서는 이번 연구에서 처음 분리되었다. 또한 화합물 1과 2의 경우 NMR 데이터가 완전하지 않거나, 문헌에 따라 서로 다르게 보고되어 있으나, 이번에 2-D NMR 등을 자세히 검토하여 모든 탄소 및 수소에 대한 데이터를 확실하게 동정하였다. Sucrose와 지방산 복합체인 화합물 3과 digalactosyl monoglyceride인 화합물 4와 5는 현재까지 천연에서 매우 드물게 보고되어 있다. 보고된 지질화합물들의 면역증강, 항암활성 등을 통해, 천궁 근경의 다양한 약리활성 소재로서의 가능성을 기대할 수 있다.

Keywords

Acknowledgement

본 성과물은 농촌진흥청 연구사업(세부과제번호: PJ01420403)의 지원에 의해 이루어진 것입니다. 지원에 감사드립니다.

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