Xyloketal H from the mangrove endophytic fungus Xylaria sp.2508

摘要

(3R*,3aR*,9aR)-3,9a-Dimethyl-2,3,3a,9a-tetrahydro-4H-furo[2,3-b)]chromene-5,7-diol (xyloketal H),a representative of a new family of xyloketals,was isolated from the marine-derived mangrove fungus Xylaria sp.2508.Its structure was elucidated by spectroscopic data and single-crystal X-ray diffraction analysis.