Transformation of Terpene Piquerol A to Hydroquinone and Phenolic Derivatives. Effect of These Compounds on Weeds

详细信息    查看全文

• 作者：Manuel Jim&eacute ; nez-Estrada ; Arturo Navarro ; Marí ; a V. Flores ; Ricardo Reyes Chilpa ; Blanca Herná ; ndez ; Ana L. Anaya ; and Blas Lotina-Hennsen
• 刊名：Journal of Agricultural and Food Chemistry
• 出版年：1996
• 出版时间：September 1996
• 年：1996
• 卷：44
• 期：9
• 页码：2839 - 2841
• 全文大小：103K
• 年卷期：v.44,no.9(September 1996)
• ISSN：1520-5118

文摘

Piquerol A (Ia), an allelopathic terpene from Piqueriatrinervia (Asteraceae) was chemicallytransformed into its diacetate (Ib), benzylic alcohol(II), dialkyl hydroquinone derivative (IIIaandIIIb), and phenolics (IVa and V).The structures of these derivatives were determined byspectralanalysis. Piquerol derivatives were found to act as powerfulradicle growth inhibitors of the weedAmarantus hypochondriacus. Order of inhibition wasIb > IIIa > Ia > IVa> II. The first threecompounds were also radicle growth inhibitors of the weedEchinocloa crusgalli.Keywords: Piquerol A; Piqueria trinervia;2-methyl-3-isopropenylhydroquinone; 2-methyl-3-isopropenylphenol; 3-methyl-2-isopropenyl derivatives; weed radiclegrowth inhibition