E. Thines et al., NEW BOTRYDIAL SESQUITERPENOIDS FROM HYMENOSCYPHUS-EPIPHYLLUS, Zeitschrift fur Naturforschung. C, A journal of biosciences, 52(7-8), 1997, pp. 413-420
Four new botrydial derivatives, hymendial (1), 7 alpha-hydroxydihydrob
otrydial (2), 7 alpha-hydroxy-10-O-methyldihydrobotrydial (4), and 7 a
lpha-acetoxy-15 alpha-methoxy-10-O-methyl-dihbotrydial (5) were isolat
ed together with dihydrobotrydial (3) from the culture fluid of the as
comycete Hymenoscyphus epiphyllus. In addition, cytochalasin H (6a), 1
8-deoxycytochalasin H (6b) and (+)-mellein (7) were produced by this f
ungus. Hymendial (1), possessing an alpha, beta-unsaturated dialdehyde
functionality, exhibits antimicrobial and cytotoxic activities and is
mutagenic in the Ames Salmonella assay.