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Antioxidant Activity of Zyzzyanones and Makaluvamines from the Marine Sponge Zyzzya fuliginosa
  • N. Utkina
  • Chemistry, Medicine
    Natural product communications
  • 1 November 2013
Structural-activity relationships showed that antioxidant activities of tested compounds depended on the presence of a phenolic function in molecules, and makaluvamines 5–7 possessing a p-hydroxystyryl moiety were more active than zyzzyanones 1–4 possessing ap-hydroxyphenyl fragment.
Spongiadioxins A and B, two new polybrominated dibenzo-p-dioxins from an Australian marine sponge Dysidea dendyi.
Two new cytotoxic tetrabromodibenzo-p-dioxins were isolated from an Australian marine sponge Dysidea dendyi and established by 1D and 2D NMR spectroscopy, X-ray analysis, and synthesis of the methyl ether of spongiadioxin B from diphenyl ether isolated from dysidea herbacea.
Antioxidant activityofaromatic alkaloids from the marine sponges Aaptos aaptos and Hyrtios SP.
  • N. Utkina
  • Chemistry
    Chemistry of Natural Compounds
  • 1 November 2009
Aaptamine (1) and isoaaptamine (2) were isolated from the marine sponge Aaptos aaptos; 6-bromo-2′-de-N-methylaplysinopsin (3) from the marine sponge Hyrtios sp. Alkaloids 1–3 were tested for the
Brominated diphenyl ethers from the marine sponge Dysidea fragilis
It was established that the tannins of Diospyros kaki, Rubus fruticosus, and Cydonia vulgaris were formed by the polymerization of leukocyanidin, that of Thea sinensis from catechin, those of Punica
A new binaphthoquinone fromStrongylocentrotus intermedius
SummaryFrom a mixture of the pigments of the sea urchinStrongylocentrotus intermedius, in addition to the known spinochrome D, we have isolated a new binaphthoquinone having the structure of
Two new minor polybrominated dibenzo-p-dioxins from the marine sponge Dysidea dendyi.
Two new minor tribromodibenzo-p-dioxins, spongiadioxin C and its methyl ether, were isolated from an Australian marine sponge Dysidea dendyi and inhibited the cell division of fertilized sea urchin eggs.
Sesquiterpenoid aminoquinones from the marine sponge Dysidea sp.
Four new sesquiterpenoid arenarone derivatives and the new dimeric popolohuanone F (5), a derivative of 19-aminoarenarone and werenarol, have been isolated from the Australian marine sponge Dysidea sp.
Antioxidant Activity of Phenolic Metabolites from Marine Sponges
The marine-sponge metabolitesilimaquinone (1), isospongiaquinone(2),puupenone(3), 15-methoxypuupenol (4), 2-methyl-2-pentaprenyl-6-hydroxychromene (5), (+)-curcuphenol (6), (+)-curcudiol (7), and
Cyclosmenospongine, a new sesquiterpenoid aminoquinone from an Australian marine sponge Spongia sp.
A new sesquiterpenoid aminoquinone, cyclosmenospongine (1), containing a dihydropyran ring, was isolated from an Australian marine sponge Spongia sp., along with the known metabolites,
Biological activities of marine sesquiterpenoid quinones: structure-activity relationships in cytotoxic and hemolytic assays.
The mechanism of action employed by these compounds against cell membranes is discussed, with a direct correlation between cytotoxic and hemolytic activities.