1,721,041 research outputs found
Sinuladiterpenes a-F, New Cembrane Diterpenes from Sinularia Flexibilis
No full textChromatographic investigation of the octocoral Sinularia flexibilis afforded six new cembrane diterpenes, sinuladiterpenes A-F (1-6, resp.), in addition to four known cembranolides, 11-episinularolide acetate, 11- dehydrosinulariolide, 11-episinulariolide, and sinulariolide . Their structures were elucidated by spectroscopic analysis , especially 2D-NMR and HR-ESI-MS. Compound 2 exhibited significant in vitro cytotoxic activity against human colon adenocarcinoma (WiDr) cell line
Juncenolides F and G, Two New Briarane Diterpenoids from Taiwanese Gorgonian Junceella juncea
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New Pentacyclic Polyketide Dimeric Peroxides from a Taiwanese Marine Sponge Petrosia Elastica
No full textTwo novel pentacyclic polyketide dimers, dihalenaquinolides A (1) and B ( 2), have been isolated from the marine sponge Petrosia elastica collected in Nan-wan, Taiwan. The structures 1 and 2 were established on the basis of extensive spectral analysis. (C) 2004 Elsevier Ltd. All rights reserved
Cytotoxic activity of capnellene-8, 10-diol derivatives from a Taiwanese soft coral Capnella sp.
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