Investigation of an extract of Iphiona aucheri afforded compounds 1–3. These compounds were identified by detailed spectroscopic and spectrometric analysis, however, a literature search revealed that NMR and mass data similar to those of compound 3 have been reported for donine alkaloid 4. Investigation of the experimental and calculated NMR data of compound 4 revealed that the proposed structure should be revised to 3. This was further confirmed by synthesis of compounds 3 and 4.
对伊
菲奥纳·奥切里(Iphiona aucheri)
提取物进行研究后,得到了化合物1-3。通过详细的波谱和光谱分析,确定了这些化合物的结构,然而,文献检索显示,与化合物3类似的核磁共振和质谱数据也曾被报道为东尼碱
生物碱4。对化合物4的实验和计算核磁共振数据的调查表明,建议的结构应修改为3。通过合成化合物3和4,进一步证实了这一点。