Transformation of Terpene Piquerol A to Hydroquinone and Phenolic Derivatives. Effect of These Compounds on Weeds
作者:Manuel Jiménez-Estrada、Arturo Navarro、María V. Flores、Ricardo Reyes Chilpa、Blanca Hernández、Ana L. Anaya、Blas Lotina-Hennsen
DOI:10.1021/jf9406626
日期:1996.1.1
Piquerol A (Ia), an allelopathic terpene from Piqueria trinervia (Asteraceae) was chemically transformed into its diacetate (Ib), benzylic alcohol (II), dialkyl hydroquinone derivative (IIIa and IIIb), and phenolics (IVa and V). The structures of these derivatives were determined by spectral analysis. Piquerol derivatives were found to act as powerful radicle growth inhibitors of the weed Amarantus hypochondriacus. Order of inhibition was Ib > IIIa > Ia > IVa > II. The first three compounds were also radicle growth inhibitors of the weed Echinocloa crusgalli.