Development of Biologically Active Compounds from Edible Plant Sources XXII. Triterpenoids from the Aerial Parts of Sajabalssuk (Artemisia princeps PAMPANINI)

식용식물자원으로부터 활성물질의 탐색-XXII. 사자발쑥(Artemisia princeps PAMPANINI)의 지상부로부터 Triterpenoid의 분리

  • Bang, Myun-Ho (Skin Biotechnology Center) ;
  • Cho, Jin-Gyeong (The Graduate School of Biotechnology & Plant Metabolism Research Center) ;
  • Song, Myoung-Chong (The Graduate School of Biotechnology & Plant Metabolism Research Center) ;
  • Lee, Dae-Young (The Graduate School of Biotechnology & Plant Metabolism Research Center) ;
  • Han, Min-Woo (The Graduate School of Biotechnology & Plant Metabolism Research Center) ;
  • Chung, Hae-Gon (Ganghwa Agricultural R&D Center) ;
  • Jeong, Tae-Sook (National Research Laboratory of Lipid Metabolism & Atherosclerosis, Korea Research Institute of Bioscience and Biotechnology) ;
  • Lee, Kyung-Tae (Department of Biochemistry, College of Pharmacy, Kyung-Hee University) ;
  • Choi, Myung-Sook (Department of Food Science and Nutrition, Kyungpook National University) ;
  • Baek, Nam-In (The Graduate School of Biotechnology & Plant Metabolism Research Center)
  • 방면호 (경희대학교 피부생명공학센터) ;
  • 조진경 (경희대학교 생명공학원 및 식물대사연구센터) ;
  • 송명종 (경희대학교 생명공학원 및 식물대사연구센터) ;
  • 이대영 (경희대학교 생명공학원 및 식물대사연구센터) ;
  • 한민우 (경희대학교 생명공학원 및 식물대사연구센터) ;
  • 정해곤 (강화군 특화작목연구소) ;
  • 정태숙 (한국생명공학연구원 지질대사연구실) ;
  • 이경태 (경희대학교 약학대학 약품생화학교실) ;
  • 최명숙 (경북대학교 식품영양학과) ;
  • 백남인 (경희대학교 생명공학원 및 식물대사연구센터)
  • Published : 2008.09.30

Abstract

The aerial parts of Sajabalssuk (Artemisia princeps PAMPANINI, Sajabalssuk) was extracted with 80% aqueous MeOH, and the concentrated extract was partitioned with EtOAc, n-BuOH and $H_2O$, successively. From the EtOAc fraction, three cycloartane-type triterpnoids and one ursane-type triterpenoid were isolated through the repeated silica gel, ODS and Sephadex LH-20 column chromatographies. From the results of physico-chemical data including NMR, MS and IR, the chemical structures of the triterpenoids were determined as wrightial (1), wrightial acetate (2), 27-norcycloart-20(21)-ene-25-al-3${\beta}$-ol acetate (3) and ursolic acid (4). No report has been found for isolation of compound 3 in the literature so far, and compounds 1, 2 and 3 were the first to be isolated from Sajabalssuk (Artemisia princeps PAMPANINI, Sajabalssuk). Also, compound 1 showed Acyl-CoA:Cholesterol acyltransferase (hACAT-1) and hACAT-2 inhibitory activity with the $IC_{50}$ values of 33.0 and 45.0 ${\mu}g/ml$, respectively. Compounds 2 and 3 inhibited hACAT-1 activity with the $IC_{50}$ values of 12.0 and 16.0 ${\mu}g/ml$, respectively.

사자발쑥의 지상부를 80% MeOH용액으로 추출하고, 얻어진 추출물을 EtOAc, H-BuOH 및 $H_2O$로 용매 분획 하였다. 이 중 EtOAc 분획으로부터 silica gel과 octadecyl silica gel(ODS), Sephadex LH-20 column chromatography로 정제하여 4종의 triterpenoid를 분리하였다. 각 화합물의 화학구조는 NMR, MS 및 IR 등의 스펙트럼 데이터를 해석하여 wrightial(1), wrightial acetate(2), 27-norcycloart-20(21)-ene-25-al-3${\beta}$-ol acetate(3) 및 ursolic acid(4)로 동정하였다. 이 화합물들은 사자발쑥에서 처음으로 분리 보고 되었으며 특히, 화합물 3은 천연에서 처음으로 분리 보고 되었다. 또한 이번에 분리한 화합물에 대하여 항고지혈증 활성을 측정한 결과 화합물 1은 ACAT1과 ACAT2 효소에 대한 $IC_{50}$ 값이 33 ${\mu}g/ml$와 45 ${\mu}g/ml$로 나타났고, 화합물 2는 ACAT1 효소에 대하여 $IC_{50}$ 값이 12 ${\mu}g/ml$로 나타났다. 화합물 3은 ACATI 효소에 대하여 $IC_{50}$값이 16 ${\mu}g/ml$으로 나타났다.

Keywords

References

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