A SYNTHETIC METHOD FOR NOVEL 1,2,3-TRISUBSTITUTED CYCLOPENTANE DERIVATIVES, 1-HYDROXYMETHYL-3-METHOXY-2-OXABICYCLO[2.2.1]HEPTANE-7-CARBOXYLIC LACTONES
作者:Takeshi Imagawa、Tsunefumi Nakagawa、Kazuyuki Matsuura、Tetsuo Akiyama、Mituyosi Kawanisi
DOI:10.1246/cl.1981.903
日期:1981.7.5
maleic anhydride leads to tricyclic lactone-carboxylic acids through the sequence of esterification and intramolecular Diels–Alder reaction. Anodic oxidative decarboxylation of the hydrogenated products in MeOH affords 1,2,3-trisubstituted cyclopentane derivatives, viz. 1-hydroxymethyl-3-methoxy-2-oxabicyclo[2.2.1]heptane-7-syn-carboxylic lactones, potential intermediates for synthesis of iridoids.
糠醇与马来酸酐的反应通过酯化和分子内 Diels-Alder 反应的顺序产生三环内酯-羧酸。氢化产物在 MeOH 中的阳极氧化脱羧得到 1,2,3-三取代的环戊烷衍生物,即。1-羟甲基-3-甲氧基-2-氧杂双环[2.2.1]庚烷-7-syn-羧基内酯,合成环烯醚萜的潜在中间体。