Abstract
A new isocoumarin, 7-hydroxyl-4-methyl isocoumarine ( 1), together with three known monoterpenes, (3 R, 4 R, 6 S)-3, 6-dihydroxy-1-menthene ( 2), (+)-(1 R, 3 S, 4 R, 6 S)-6-hydroxymenthol ( 3) and 4-isopropyl-1-methylcyclohex-2-ene-1, 6-diol ( 4), was isolated from the methanol extract of Brickellia rosmarinifolia. The structures were determined by spectroscopic means. Compounds 1, 2, 3 and 4 showed antifungal activities against Colletotrichum musae and Peronophythora litchii in vitro.
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