Isolation, structure determination and synthesis of new dihydroisocoumarins from Ginkgo biloba L.
作者:Noureddine Choukchou-Braham、Yoshinori Asakawa、Jean-Pierre Lepoittevin
DOI:10.1016/s0040-4039(00)76710-4
日期:1994.6
New optically active 8-hydroxy-3-alk(en)yl-3,4-dihydroisocoumarins 2a–c were isolated from Ginkgo biloba L. fruits. The absolute configuration was determined to be R by comparison with both enantiomers of the 8-hydroxy-3-tridecyl-3,4-dihydroisocoumarin synthesized from optically active epichlorhydrins.
从银杏果实中分离出新的旋光的8-羟基-3-烷(烯)基-3,4-二氢异香豆素2a–c。通过与由旋光表氯醇合成的8-羟基-3-十三烷基-3,4-二氢异香豆素的两种对映体进行比较,确定绝对构型为R。