A novel two-step synthetic route was developed and gave the mono-substituted derivative 6-deoxy-6-[(1-(2-amino)ethylamino)folate]-β-cyclodextrin (CDEnFA) with high yield (60 %). Elemental analysis, mass spectrometry, 1H and 13C NMR, FTIR and Raman spectroscopies demonstrated the successful synthesis of the γ isomer only with no evidence of the presence of other isomers or free folic acid. Electronic absorption spectroscopy was used to study the photochemical properties of CDEnFA and showed that in both the solid state and aqueous solution CDEnFA is considerably more photo-stable than free folic acid.
研究人员开发了一条新颖的两步合成路线,并以高产率(60%)得到了单取代衍
生物 6-脱氧-6-[(1-(2-
氨基)乙
氨基)叶酸]-β-
环糊精(CDEnFA)。元素分析、质谱分析、1H 和 13C NMR、傅立叶变换红外光谱和拉曼光谱分析表明,只成功合成了 γ 异构体,没有证据表明存在其他异构体或游离叶酸。电子吸收光谱被用来研究 CDEnFA 的光
化学特性,结果表明,在固态和
水溶液中,CDEnFA 比游离叶酸的光稳定性要高得多。