A general strategy for the synthesis of phenylethanoid glycosides (PhG) including echinacoside 1, acteoside 2, calceolarioside-A 3 and calceolarioside-B 4 is reported. The strategy features the application of low substrate concentration glycosylation and N-formyl morpholine modulated glycosylation methods for the construction of 1,2-trans β- and α-glycosidic bonds. The reported strategy does not invoke the use of the participatory acyl protecting function, which is incompatible with the ester function present in target PhG compounds. A preliminary study of the anti-proliferation properties of the PhG compounds 1–4 was performed; the acteoside 2 exhibited the best inhibition on the prostatic cancer cell proliferation.
报告了一种合成
苯乙醇糖苷(PhG,包括
紫锥菊苷1、阿克特苷2、卡尔斯洛里苷-A 3和卡尔斯洛里苷-B 4)的通用策略。该策略采用低底物浓度的糖苷化和
N-甲酰吗啉调节的糖苷化方法,用于构建1,2-反式β-和α-糖苷键。所述策略不涉及参与性酰基保护基团的使用,而此基团与目标PhG化合物中存在的酯功能不相容。还对PhG化合物1-4的抗增殖特性进行了初步研究;阿克特苷2对前列腺癌细胞增殖的抑制效果最佳。