Isolation and Structure Elucidation of New Marine Natural Products Isolated from Hawaiian Invertebrates.
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2017-08
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Extracts of three species of sponge and an egg mass of the nudibranch Hexabranchus sanguineus were examined because they displayed biological activity against either BACE1 or HSV-1 and VSV. In some cases bioactivity guided isolation led to the purified active agent, while in others a loss of activity led to chemical investigations of the extract. The fruits of this labor were identification, characterization, and, in most cases, biological evaluation of 7 new and 10 known compounds from four separate structural classes. The structures of these compounds were elucidated through analyses of NMR experiments(1H, 13C, TOCSY, HMBC, HSQC, COSY, ROESY, and NOESY), HR-MS data, computational simulations, and optical rotations.
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Natural products, BACE1, Polyacetylene, Diterpene, Estrogen, Receptor, Secondary Metabolite, Cytotoxicity, Bioactivity Guided Isolation
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