A new fungicidal lactone from Xylocarpus granatum (Meliaceae).
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.
Du
Shijie
S
Department of Applied Chemistry, China Agricultural University, Beijing 100094, China.
Wang
Mingan
M
Zhu
Wen
W
Qin
Zhaohai
Z
D001203:Ascomycota / Q000187:drug effects*; D005233:Fatty Alcohols / Q000737:chemistry; D005659:Fungicides, Industrial / Q000737:chemistry* / Q000494:pharmacology*; D005960:Glucosides / Q000737:chemistry* / Q000494:pharmacology; D009682:Magnetic Resonance Spectroscopy; D029582:Meliaceae / Q000737:chemistry*; D008826:Microbial Sensitivity Tests; D015394:Molecular Structure; D025282:Mycelium / Q000187:drug effects; D010935:Plant Diseases / Q000382:microbiology; D012855:Sitosterols / Q000737:chemistry; D021241:Spectrometry, Mass, Electrospray Ionization; D013055:Spectrophotometry, Infrared; D014908:Triticum / Q000382:microbiology
D005233:Fatty Alcohols; D005659:Fungicides, Industrial; D005960:Glucosides; D012855:Sitosterols; C025473:gamma-sitosterol; C047578:1-triacontanol