8 resultados
The marine soft corals Sarcophyton trocheliophorum crude extracts possessed antimicrobial activity towards pathogenic bacterial strains, i.e. Bacillus cereus, Salmonella typhi, Escherichia coli, Staphylococcus aureus and Pseudomonas aeruginosa. Bioassay-guided fractionation indicated that the
Coral reefs are the most biodiverse and biologically productive of all marine ecosystems. Corals harbor diverse and abundant prokaryotic groups. However, little is known about the diversity of coral-associated microorganisms. We used molecular techniques to identify and compare the culturable
This review reports the structural diversity of steroids from Sarcophyton species based on literature from the beginning of marine steroid research until now. There are 65 compounds studied from eight species. Most of them are polyhydroxy-type steroids of C-27-C-31 carbon skeleton. Their biological
One new oxygenated cembranoid diterpene, named sarcophytol W (1), along with six known analogues (2-7) were isolated from a soft coral Sarcophyton sp. collected from the South China Sea. Their structures were elucidated by spectroscopic analyses and by comparison with previously reported data. The
Chemical investigation of the octocoral Sarcophyton ehrenbergi led to the isolation of six new cembranoids, (+)-12-carboxy-11Z-sarcophytoxide (1), (+)-12-methoxycarbonyl-11Z-sarcophine (3), ehrenberoxides A-C (4-6), and lobophynin C (2), along with two known compounds, (+)-sarcophytoxide (7) and
Two new cembranoids, methyl tetrahydrosarcoate ( 1) and methyl tetrahydroisosarcoate ( 2), were isolated from the soft coral Sarcophyton elegans, collected at Kitangambwe Kenya, together with four biscembranoids, the known nyalolide ( 3) and the unprecedented desacetylnyalolide ( 4),
One new cembrane diterpene, 16-hydroxycembra-1,3,7,11-tetraene (1), along with three known compounds, 15-hydroxycembra-1,3,7,11-tetraene (2), sarcophine (3) and sarcophytoxide (4) were isolated from Sarcophyton sp. collected from Karah Island, Terengganu, West Malaysia. Their structures were
Seven new polyoxygenated steroids (1-7) were isolated together with seven known analogues (8-14) from the South China Sea soft coral, Sarcophyton sp. The structures of the new compounds were identified on the basis of extensive spectroscopic analysis and comparison with reported data. All the