Two new open-chain cytochalasins, xylarchalasins A and B ( and ), together with six known analogues (-), were isolated from the endophytic fungus sp. GDGJ-77B from the Chinese medicinal plant . Their structures were elucidated on the basis of comprehensive spectroscopic analysis. Compound displayed moderate antibacterial activities against and with MIC values of 25 and 12.5 μg/mL, respectively.
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