[关键词]
[摘要]
目的 研究小酸浆Physalis minima全草中甾体类化学成分。方法 利用硅胶柱色谱、Sephadex LH-20凝胶柱色谱、中压ODS柱色谱及半制备高效液相色谱等方法分离纯化,根据理化常数和核磁共振谱、质谱等光谱数据鉴定化合物结构。结果 从小酸浆全草的乙醇提取物中分离得到7个甾体类化学成分,其中酸浆苦素类化合物2个,分别鉴定为16,24-cyclo-13,14-secoergost-2-ene-18,26-dioicacid-14:17,14:27-diepoxy-5α,6β,13α,20α,22β,25β-hexahydroxy-1,15-dioxo-γ-lactone-δ-lactone(1)、酸浆苦素D(2);醉茄内酯类化合物5个,分别鉴定为physagulin L(3)、physagulin M(4)、physaminimin F(5)、physagulin K(6)、withagulatin A(7)。结论 化合物1为新化合物,命名为25-羟基酸浆苦素D;化合物3、4、7为首次从该植物中分离得到。
[Key word]
[Abstract]
Objective To investigate the steroidal chemical constituents from the whole plants of Physalis minima. Methods The chemical constituents were isolated and purified by repeated silica gel column chromatography, Sephadex LH-20 gel column chromatography, medium pressure ODS column chromatography and semi-preparative HPLC, and their structures were elucidated on the basis of physico-chemical properties and spectral analysis. Results Seven compounds were separated from the whole plant of P. minima, among them, two compounds were identified as physalins and named as 16,24-cyclo-13,14-secoergost-2-ene-18,26-dioicacid-14:17,14:27-diepoxy-5α,6β,13α,20α,22β,25β-hexahydroxy-1,15-dioxo-γ-lactone-δ-lactone (1) and physalin D (2); The other five compounds were identified as withanlides and named as physagulin L (3), physagulin M (4), physaminimin F (5), physagulin K (6), and withagulatin A (7). Conclusion Compound 1 is a new compound named 25-hydroxy-physalin D, at the same time, compounds 3, 4, and 7 were obtained from this plant for the first time.
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[基金项目]
安徽省高等学校自然科学基金重点项目(KJ2017A768)