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Natural product research

A new fungicidal lactone from Xylocarpus granatum (Meliaceae).


PMID 19735046

Abstract

A new lactone was isolated from the leaves of Xylocarpus granatum, along with three known compounds: triacontanol, beta-sitosterol and kaempferol-3-O-beta-D-glucoside. Its structure was elucidated as 3-(1-hydroxyethyl)-4,4-dimethyl-4-butyrolactone (1) by infrared, (1)H and (13)C NMR and ESI-MS data. At a concentration of 20 microg mL(-1), the new lactone gave a 67.4% inhibition rate against wheat powdery mildew.

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T3777
1-Triacontanol, ≥98% (capillary GC)
C30H62O