作者:Juan Borges-Del-Castillo、Ana I. Martinez-Martir、Francisco Rodriguez-Luis、Juan C. Rodriguez-Ubis、Purificacion Vazquez-Bueno
DOI:10.1016/s0031-9422(00)85043-8
日期:1984.4
Abstract Two new coumarin isomers have been isolated from Melampodium divaricatum and identified by spectral procedures as 8-hydroxy-7-(3′-methyl-2′-butenyloxy)coumarin ( 1 ) and 7-hydroxy-8-(3′-methyl-2′-butenyloxy)coumarin ( 2 ). The regioselective synthesis of each isomer was made by two different alkylation pathways confirming their structures.
摘要 从 Melampodium divaricatum 中分离出两种新的香豆素异构体,并通过光谱方法鉴定为 8-hydroxy-7-(3'-methyl-2'-butenyloxy)coumarin ( 1 ) 和 7-hydroxy-8-(3'-methyl -2'-丁烯氧基)香豆素(2)。每个异构体的区域选择性合成是通过两种不同的烷基化途径进行的,证实了它们的结构。