英语翻译A portion of the n-hexane fraction (30 g) was chromatographedon silica gel column eluting with a gradient of nhexane-EtOAc to afford compound 1 (756 mg).Compound1; El-MS m/z (70 eV,tel.int.%):412 [M]+ (11.9),397 (3.8),394 (2.8),379 (3.7),
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