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Meroterpenoids from the alga-derived fungi Penicillium thomii Maire and Penicillium lividum Westling.
Ten new austalide meroterpenoids (1-10) were isolated from the alga-derived fungi Penicillium thomii KMM 4645 and Penicillium lividum KMM 4663. Their structures were elucidated by extensiveExpand
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Echinamines A and B, first aminated hydroxynaphthazarins from the sea urchin Scaphechinus mirabilis.
Two new spinochromes, echinamines A (1) and B (2), were isolated from the sea urchin Scaphechinus mirabilis. Compounds 1 and 2 represent the first examples of natural polyhydroxynaphthazarins with aExpand
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Synthesis of ginsenoside Rg3, a minor constituent of Ginseng radix.
Glycosylation of 12beta-acetoxy-dammar-24-en-3beta,20(S)-diol (4), with hepta-O-acetyl-alpha-sophorosyl bromide (5) under catalysis by Ag2CO3 or Ag2O afforded a chromatographically unseparatedExpand
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Monanchocidin: a new apoptosis-inducing polycyclic guanidine alkaloid from the marine sponge Monanchora pulchra.
Monanchocidin (1), a guanidine alkaloid with an unprecedented skeleton system derived from a polyketide precursor, (ω-3)-hydroxy fatty acid, and containing a 2-aminoethyl- andExpand
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Monanchocidins B-E: polycyclic guanidine alkaloids with potent antileukemic activities from the sponge Monanchora pulchra.
New unusual polycyclic guanidine alkaloids monanchocidins B-E (2-5) along with monanchocidin A (1), which we recently described, were isolated from the Far-Eastern marine sponge Monanchora pulchra.Expand
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Spongiadioxins A and B, two new polybrominated dibenzo-p-dioxins from an Australian marine sponge Dysidea dendyi.
Two new cytotoxic tetrabromodibenzo-p-dioxins, spongiadioxins A (1) and B (2), were isolated from an Australian marine sponge Dysidea dendyi. The structures of these compounds were established by 1DExpand
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Isoflavonoid composition of a callus culture of the relict tree Maackia amurensis Rupr. et Maxim.
Isoflavonoids, an interesting and restricted group of secondary metabolites of legumes, exhibit estrogenic, antiangiogenic, and anticancer activities and are now popular as dietary supplements. PlantExpand
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Sesquiterpenoid aminoquinones from the marine sponge Dysidea sp.
Four new sesquiterpenoid arenarone derivatives, 18-aminoarenarone (1), 19-aminoarenarone (2), 18-methylaminoarenarone (3), and 19-methylaminoarenarone (4), and the new dimeric popolohuanone F (5), aExpand
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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 PunicaExpand
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Secondary metabolites from a marine-derived fungus Aspergillus carneus Blochwitz.
Prenylated indole alkaloids, carneamides A-C (1-3), quinazolinone derivatives, carnequinazolines A-C (5-7), aryl C-glycosides, carnemycin A, B (8, 9) and a drimane sesquiterpenoid (10), together withExpand
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