目的 研究金铁锁Psammosilene tunicoides根的化学成分。方法 经硅胶、Sephadex LH-20凝胶、ODS反相硅胶等柱色谱方法进行分离，并运用NMR、HR-ESI-MS等波谱学方法进行化合物的结构鉴定。结果 从金铁锁根80%乙醇水提取物中分离得到2个麦芽酚苷类化合物，分别鉴定为麦芽酚-3-O-[6-O-（4-O-α-L-吡喃鼠李糖基）-Z-p-香豆酰基]-β-D-吡喃葡萄糖苷（1）和麦芽酚-3-O-[6-O-（4-O-α-L-吡喃鼠李糖基）-E-p-香豆酰基]-β-D-吡喃葡萄糖苷（2）。结论 化合物1和2为新的麦芽酚苷类化合物，分别命名为金铁锁酚苷A和B。

Objective To investigate the chemical constituents from the roots of Psammosilene tunicoides. Methods Chemical constituents were separated by column chromatography over silica gel, Sephadex LH-20, and reverse-phase silica gel (ODS), and chemical structures were determined by analysis of HR-ESI-MS, 1D, and 2D NMR spectroscopic data. Results Two new maltol glycosides were isolated from the 80% aq. ethanol extract from the roots of P. tunicoides, and their structures were determined as maltol-3-O-[6-O-(4-O-α-L-rhamnopyranosyl)-Z-p-coumaroyl]-β-D-glucopyranoside (1) and maltol-3-O-[6-O-(4-O-α-L-rhamnopyranosyl)-E-p-coumaroyl]-β-D-glucopyranoside (2). Conclusion Compounds 1 and 2 are identified as new maltol glycosides, and named as tunicosides A and B, respectively.

国家重点研发计划（2017YFC1702000）；国家自然科学基金项目（81520108030）；国家自然科学基金项目（81373301）