碩士 / 國立中山大學 / 海洋資源學系研究所 / 89 / In our continuing study on the chemical constituents of Taiwanese soft corals, the EtOAc extracts of a gorgonian coral Isis hippuris and a alcyonarian coral Sinularia gibberosa were investigated, respectively. Seven compounds, including 3α,11β-dihydroxy-24-methyl-22,25epoxy-5α- furostan-18,20β-lactone (1), 3-acetyl-2-deacetyl-22R-hippurin-1 (2), hippuristerone F (3), hippurin-1 (4), 22-epi-hippurin-1 (5), 3-acetyl-2- desacetyl-22-epi-hippurin-1 (6) and 2-desacetyl-22-epi-hippurin-1 (7) were isolated from I. hippuris. Three metabolites, 3β,11-dihydroxy-24- methylene-9,11-secocholest-5-en-9-one (8), 3β,11-dihydroxy-24-methyl-9, 11-secocholest-5-en- 9-one (9) and 3β-hydroxy-11-acetoxy-24-methylene-9, 11-secocholest-5-en-9-one (10) were isolated from S. gibberosa. Among them, compounds 1–3, are new products. All metabolites 1–10 are steroids.
The structures of 1–10 were determined by physical and spectral analysis, including IR, MS, 1D NMR (1H, 13C) and 2D NMR ( 1H-1H COSY, HMQC, HMBC and NOESY ) and by comparison with the related physical and spectral data of the known compounds.
The cytotoxicity of the isolates against the P-388 ( mouse lymphocytic leukemia ), A-549 ( human lung adenocarcinoma ) and HT-29 ( human colon adenocarcinoma ) cancer cell lines were studied. Compound 9 and 10 showed significant cytotoxicity against P-388 cancer cell line. Metabolites 6 and 8 showed significant cytotoxicity against P-388 and HT-29 cancer cell lines. Compound 2, 4 and 5 exhibited potent cytotoxicity against the growth of P-388, A-549 and HT-29 cancer cell lines.
| Identifer | oai:union.ndltd.org:TW/089NSYS5277014 |
| Date | January 2001 |
| Creators | Yi-Lea Yang, 楊奕蕾 |
| Contributors | J-H Sheu, 許志宏 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 123 |
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