Synthetic Method and Biological Activities of <i>cis</i>-Fused α-Methylene γ-Lactones
作者:Yohsuke Higuchi、Fumito Shimoma、Masayoshi Ando
DOI:10.1021/np020586y
日期:2003.6.1
was developed for the synthesis of cis-fused alpha-methylene gamma-lactones via alpha-methyl gamma-lactones. Bromination of alpha-methyl gamma-lactones with LDA/CBr(4) or TMSOTf/PTAB and successive dehydrobromination with DBU or TBAF of the resulting alpha-bromo-alpha-methyl gamma-lactones gave the desired alpha-methylene gamma-lactones in high yield. This method was successfully applied to the synthesis
开发了一种可靠的方法,用于通过α-甲基γ-内酯合成顺式稠合的α-亚甲基γ-内酯。用LDA / CBr(4)或TMSOTf / PTAB溴化α-甲基γ-内酯,然后用DBU或TBAF连续脱氢溴化所得的α-溴-α-甲基γ-内酯,可以得到所需的α-亚甲基γ-内酯。屈服。该方法已成功应用于生物活性化合物的合成。α-亚甲基γ-内酯衍生物1c,2c,4c和17对P388淋巴细胞性白血病表现出细胞生长抑制活性。他们还表现出了对作物疾病的重要活动。因此,α-亚甲基γ-内酯1c在控制由苹果黑星病引起的sc疮中显示出预防活性。α-亚甲基γ-内酯2c,4c,17