Pitipeptolides C-F, antimycobacterial cyclodepsipeptides from the marine cyanobacterium Lyngbya majuscula from Guam.
Pitipeptolides C-F, antimycobacterial cyclodepsipeptides from the marine cyanobacterium Lyngbya majuscula from Guam.
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DOI:
10.1016/j.phytochem.2011.07.014
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发表时间:
2011-11
期刊:
影响因子:
3.8
通讯作者:
Luesch H
中科院分区:
文献类型:
--
作者:
Montaser R;Paul VJ;Luesch H
Pitipeptolides A (1) and B (2) are cyclic depsipeptides isolated from the marine cyanobacterium Lyngbya majuscula from Piti Bomb Holes, Guam. Additional analogues have now been isolated by revisiting larger collections of the same cyanobacterium. The four newly identified analogues, pitipeptolides C–F (3–6), are the tetrahydro analogue (3), an analogue with a lower degree of methylation (4) as well as two homologues (5 and 6) of pitipeptolide A. The structures were elucidated using 2D NMR experiments, chiral HPLC analysis and comparison with pitipeptolide A. The newly identified analogues showed weaker cytotoxic activities compared to the two major parent compounds, pitipeptolides A (1) and B (2), against HT-29 colon adenocarcinoma and MCF7 breast cancer cells. On the other hand, pitipeptolide F (6) was the most potent pitipeptolide in a disc diffusion assay against Mycobacterium tuberculosis. The latter finding suggests that the structure of pitipeptolides could be optimized for selective antibacterial activity.
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影响因子:
5.4
作者:
Liu L;Rein KS
通讯作者:
Rein KS
影响因子:
3.6
作者:
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通讯作者:
HEATHCOCK, CH
影响因子:
5.4
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5.1
作者:
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Luesch H
影响因子:
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作者:
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通讯作者:
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