藁本内酯的稳定性与溶剂化效应的关系

AIM To study the stability of ligustilide with solvent effect and try to disclose the relationship between its stability and solvent effect, so as to develop a useful method for its preservation. METHODS The model of PCM solvent effect was used to carry out quantum chemistry calculation. The GC/MS spectrum was used to study the stability of ligustilide in solvent at room temperature. RESULTS Ligustilide is more stable in cyclohexane and chloroform than in air. The isomerization rate of ligustilide decreased remarkably to 1 6% and 6 7% in cyclohexane and chloroform compared to 58% in air. CONCLUSION The stability of ligustilide is greatly improved with the solvent effect. Keeping ligustilide in proper organic solvent is helpful to prevent its isomerization.

当归化学成分研究

从当归根乙醇提取物中分离到６个化合物，经光谱分析分别鉴定为（Ｅ）藁本内酯，（Ｚ）藁本内酯，（Ｚ）正丁烯基呋内酯，棕榈酸，β谷甾醇和阿魏酸。