Integracide derivatives produced by endophyte M-3 isolated from .

Two new integracides, dedimethyl integracide B () and integracide K (), were isolated from rice cultures of M-3, an endophyte isolated from , together with the known terpenoids, integracide B () and 2-deoxy-integracide B (). Assignment of the signals in the H and C NMR spectra of and was achieved using DEPT, HMQC, HMBC, and NOESY spectra. Compound exhibited moderate cytotoxicity against HeLa cells.