Synthesis, Structure, and Pharmacological Evaluation of the Stereoisomers of Furnidipine
作者:Ramon Alajarin、Juan J. Vaquero、Julio Alvarez-Builla、Manuel Pastor、Carlos Sunkel、Miguel Fau de Casa-Juana、Jaime Priego、Peter R. Statkow、Julia Sanz-Aparicio、Isabel Fonseca
DOI:10.1021/jm00015a005
日期:1995.7
obtained were separated by chromatography, using poly(D-phenylglycine) as the chiral stationary phase. The enantiomeric purity of the stereoisomers was determined by a high-performance liquid chromatography-chiral stationary phase technique (HPLC-CSP). Attempts to obtain crystals of a single stereoisomer failed in different solvents, while methanol crystallization of the product obtained from (+/-)-tet
报道了甲基四氢呋喃-2-基甲基2,6-二甲基-4-(2'-硝基苯基)-1,4-二氢吡啶-3,5-二羧酸酯(呋喃地平)的四种立体异构体的合成和药理活性。通过改进的Hantzsch合成,通过(-)-或(+)-四氢呋喃-2-基甲基3-氨基巴豆酸酯与2-[((2'-硝基苯基)亚甲基]乙酰乙酸甲酯的合成,或通过反应(-)-或(+)-四氢呋喃-2-基甲基2-[((2'-硝基苯基)亚甲基]乙酰乙酸酯和3-氨基巴豆酸甲酯。用聚(D-苯基甘氨酸)作为手性固定相,通过色谱法分离得到的1∶1非对映异构混合物。立体异构体的对映体纯度通过高效液相色谱-手性固定相技术(HPLC-CSP)测定。尝试在不同溶剂中获得单一立体异构体的晶体失败,而由(+/-)-四氢呋喃-2-基甲基2-[((2'-硝基苯基)亚甲基]乙酰乙酸酯和3-氨基巴豆酸甲酯获得的产物的甲醇结晶X射线晶体学证明是最难溶的外消旋体的优质晶体,证明是(SS)/