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New meroterpenoids from the marine sponge Aka coralliphaga |
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| Authors: | Shubina Larisa K Kalinovsky Anatoly I Makarieva Tatyana N Fedorov Sergey N Dyshlovoy Sergey A Dmitrenok Pavel S Kapustina Irina I Mollo Ernesto Utkina Natalia K Krasokhin Vladimir B Denisenko Vladimir A Stonik Valentin A |
| Institution: | Laboratory of Chemistry MaNaPro, Pacific Institute of Bioorganic Chemistry of the Russian Academy of Sciences, 690022 Vladivostok, Russia. shubina@piboc.dvo.ru |
| Abstract: | Three new sulfated meroterpenoids containing sesquiterpene and hydroquinone moieties, namely siphonodictyal A sulfate (1), akadisulfate A (2) and akadisulfate B (3), along with the known siphonodictyal B3 and bis(sulfato)-cyclosiphonodictyol A were isolated from the sponge Aka coralliphaga. Their structures were elucidated on the basis of spectroscopic data. Akadisulfate B and siphonodictyal B3 showed a radical-scavenging activity comparable with that of the known lipophylic antioxidant BHT. |
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