Buzhu Yu, Na Zhu, Zhizhi Du
Feb 1, 2010
Citations
0
Influential Citations
4
Citations
Journal
Helvetica Chimica Acta
Abstract
Two new 7-dehydrobrefeldin A acids, (2E,4R*)-4-hydroxy-4-[(1R*,2S*)-4-oxo-2-[(1E)-6-oxohept-1en-1-yl]-4-oxocyclopentyl]but-2enoic acid (3) and (2E,4R*)-4-hydroxy-4-[(1R*,2S*)-2-[(1E,6S*)-6-hydroxy-hept-1-en-1-yl]-4-oxocyclopentyl}but-2-enoic acid (4), were isolated from the endophytic fungal strain Cyclindrocarpon obtusisporum (COOKE & HARKNESS) WOLLENW. of Trewia nudiflora, together with two known compounds, 7-dehydrobrefeldin A (2) and brefeldin A (1). Their structures were determined on the basis of extensive 1D- and 2D-NMR-spectral analysis.