Mar. Drugs 2004, 2(4), 154-163; doi:10.3390/md204154
Article

Isolation of Araguspongine M, a New Stereoisomer of an Araguspongine/Xestospongin alkaloid, and Dopamine from the Marine Sponge Neopetrosia exigua Collected in Palau

1,4, 1, 1, 1, 1, 1, 2, 3,4, 5, 5 and 1,* email
Received: 3 August 2004; Accepted: 22 September 2004 / Published: 25 November 2004
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: A new stereoisomer of an araguspongine/xestospongin alkaloid, named araguspongine M (1), has been isolated together with 12 known compounds, araguspongines B (2) and D (3), dopamine, three galactosyl diacylglycerols, 24-methyl cholesterol, 5,6-dihydrocholesterol, β-sitosterol, and three 5α,8α-epidioxy sterols (11–13), from the marine sponge Neopetrosia exigua (formerly Xestospongia exigua) collected in Palau. The structure of 1 was assigned on the basis of its spectral data analysis. This is the first report on the isolation of dopamine from a marine sponge. This compound may be produced by an endosymbiotic Synechococcus-like cyanobacterium. Compounds 1–3 and 11–13 showed cytotoxicity against HL-60 at IC50’s of 5.5, 5.5, 5.9, 22.4, 9.5, and 9.6 μM, respectively. The possible biosynthesis origin of the isolated metabolites is discussed.
Keywords: Marine sponge; Neopetrosia exigua; araguspongine/xestospongin alkaloid; cytotoxicity; HL-60
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MDPI and ACS Style

Liu, H.; Mishima, Y.; Fujiwara, T.; Nagai, H.; Kitazawa, A.; Mine, Y.; Kobayashi, H.; Yao, X.; Yamada, J.; Oda, T.; Namikoshi, M. Isolation of Araguspongine M, a New Stereoisomer of an Araguspongine/Xestospongin alkaloid, and Dopamine from the Marine Sponge Neopetrosia exigua Collected in Palau. Mar. Drugs 2004, 2, 154-163.

AMA Style

Liu H, Mishima Y, Fujiwara T, Nagai H, Kitazawa A, Mine Y, Kobayashi H, Yao X, Yamada J, Oda T, Namikoshi M. Isolation of Araguspongine M, a New Stereoisomer of an Araguspongine/Xestospongin alkaloid, and Dopamine from the Marine Sponge Neopetrosia exigua Collected in Palau. Marine Drugs. 2004; 2(4):154-163.

Chicago/Turabian Style

Liu, Hongwei; Mishima, Yuri; Fujiwara, Takeshi; Nagai, Hiroshi; Kitazawa, Akira; Mine, Yuji; Kobayashi, Hisayoshi; Yao, Xinsheng; Yamada, Junko; Oda, Taiko; Namikoshi, Michio. 2004. "Isolation of Araguspongine M, a New Stereoisomer of an Araguspongine/Xestospongin alkaloid, and Dopamine from the Marine Sponge Neopetrosia exigua Collected in Palau." Mar. Drugs 2, no. 4: 154-163.

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