Isolation of Dibromosceptrin with Antimalarial Activity from the Unidentified Sponge, Agelas sp.

Agelas속의 미동정 해면으로부터 항말라리아 활성을 갖는 Dibromosceptrin의 분리

  • Park, Yeung-Beom (Department of Food and Life Science, Gangwon Provincial University) ;
  • Lee, Jong-Soo (Div. of Marine Bioscience, Institute of Marine Industry, Gyeongsang National University) ;
  • Lim, Chi-Won (West Sea Fisheries Research Institute, National Fisheries Research & Development Institute)
  • 박영범 (강원도립대학 식품생명과학과) ;
  • 이종수 (경상대학교 해양과학대학 해양산업연구소) ;
  • 임치원 (국립수산과학원 서해수산연구소)
  • Published : 2004.09.30

Abstract

In order to find some lead compounds for the treatment of opportunistic infections of malaria and pathogenic microbes, an undescribed Indonesian sponge Agelas sp. collected at Manado, Indonesian Waters, was suggested containing active compounds. Crude ethanolic extract of the sponge exhibited significant in vitro antimalarial and antimicrobial activity against Plasmodium falciparum (D6 colne) with $IC_{5O}$ values of $8\;{\mu}/ml$ and against pathogenic microbes such as Candida albicans $(150\;{\mu}/ml)$, Cryptococcus neoformans $(<20\;{\mu}/ml)$, Staphylococcus aureus $25\;{\mu}/ml$, methicillin-resistant Staphylococcus aureus $(<20\;{\mu}/ml)$, and Pseudomonas aeruginosa $(<20\;{\mu}/ml)$. Active compound (5.0 mg) was isolated from the ethanolic extracts of the sponge and purified by using silica gel and ODS column, successively. Active compound was elucidated as dibromosceptrin $(C_{22}H_{24}Br_2N_{10}O_2)$ by detailed analysis of FTESI-MS and comparison of $^1H,\;^{13}C$, DEPT and HMQC NMR spectral data with those reported.

Keywords

References

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