目的:对小蓟的化学成分进行研究。方法:运用硅胶柱层析、Sephadex LH-20柱层析等手段进行分离,运用UV、1HNMR、13CNMR、MS等波谱方法进行结构鉴定。结果:共分离鉴定了6个化合物,分别为乙酸橙酰胺(auran-tiam ide acetate,1),loliolide(...目的:对小蓟的化学成分进行研究。方法:运用硅胶柱层析、Sephadex LH-20柱层析等手段进行分离,运用UV、1HNMR、13CNMR、MS等波谱方法进行结构鉴定。结果:共分离鉴定了6个化合物,分别为乙酸橙酰胺(auran-tiam ide acetate,1),loliolide(2),刺槐素(acacetin,3),蒙花苷(linarin,4),洋芹素-7-O-β-D-葡萄糖醛酸丁酯(ap igen in-7-O-β-D-butylglucuron ide,5),β-胡萝卜苷(β-daucosterol,6)。结论:化合物1为首次从蓟属植物中分离得到,化合物2、5、6首次从小蓟中分离得到。展开更多
A new macrocyclic diamide, 22-membered macrocyclic diamide, named cyclodicaprylamide(2), and five known compounds, bis(2-ethylhexyl) phthalate(1), ethyl 3,4,5-trimethoxybenzoate(3), ethyl 3,4,5-trimethoxycinna...A new macrocyclic diamide, 22-membered macrocyclic diamide, named cyclodicaprylamide(2), and five known compounds, bis(2-ethylhexyl) phthalate(1), ethyl 3,4,5-trimethoxybenzoate(3), ethyl 3,4,5-trimethoxycinnamate (4), (+)-syringaresinol(5), loliolide(6), were isolated from the roots of Rauvolfia yunnanensis Tsiang. Their structures were elucidated based on NMR, 2D NMR, and MS spectrum, respectively. They were obtained from it for the first time.展开更多
Hydrilla verticillata (Linn. f.) Royle is a submerged plant for phytoremediation on Taihu Lake, China. The planted submerged plant should be harvested in every autumn to reduce the nutrition burden of the lake. Five...Hydrilla verticillata (Linn. f.) Royle is a submerged plant for phytoremediation on Taihu Lake, China. The planted submerged plant should be harvested in every autumn to reduce the nutrition burden of the lake. Five compounds were firstly isolated by column chromatography and purified from the extractions of Hydrilla verticillata (Linn. f.) Royle. 1-(5'-Hydroxy-4'-hydroxymethyl-1'-methyl-1H-pyrrol-2'-yl)-henicosa-2,12,15-trien-1-one (2) and thymidine (3) were identified by EIMS, 1H NMR, laC NMR and IR spectra. Crystal loliolide (1) and sulfur-gamma (4) were identified by X-ray diffraction. Octadecanedioic acid (5) was also elucidated. Among them, compound 2 is a new natural compound, loliolide (1) and thymidine (3) are known bioactive substances. The results provided basic research data for exploring their application as medical materials.展开更多
文摘目的:对小蓟的化学成分进行研究。方法:运用硅胶柱层析、Sephadex LH-20柱层析等手段进行分离,运用UV、1HNMR、13CNMR、MS等波谱方法进行结构鉴定。结果:共分离鉴定了6个化合物,分别为乙酸橙酰胺(auran-tiam ide acetate,1),loliolide(2),刺槐素(acacetin,3),蒙花苷(linarin,4),洋芹素-7-O-β-D-葡萄糖醛酸丁酯(ap igen in-7-O-β-D-butylglucuron ide,5),β-胡萝卜苷(β-daucosterol,6)。结论:化合物1为首次从蓟属植物中分离得到,化合物2、5、6首次从小蓟中分离得到。
基金the Natural Science Foundation of Yunnan Province, China(No.2006C0010Z).
文摘A new macrocyclic diamide, 22-membered macrocyclic diamide, named cyclodicaprylamide(2), and five known compounds, bis(2-ethylhexyl) phthalate(1), ethyl 3,4,5-trimethoxybenzoate(3), ethyl 3,4,5-trimethoxycinnamate (4), (+)-syringaresinol(5), loliolide(6), were isolated from the roots of Rauvolfia yunnanensis Tsiang. Their structures were elucidated based on NMR, 2D NMR, and MS spectrum, respectively. They were obtained from it for the first time.
文摘Hydrilla verticillata (Linn. f.) Royle is a submerged plant for phytoremediation on Taihu Lake, China. The planted submerged plant should be harvested in every autumn to reduce the nutrition burden of the lake. Five compounds were firstly isolated by column chromatography and purified from the extractions of Hydrilla verticillata (Linn. f.) Royle. 1-(5'-Hydroxy-4'-hydroxymethyl-1'-methyl-1H-pyrrol-2'-yl)-henicosa-2,12,15-trien-1-one (2) and thymidine (3) were identified by EIMS, 1H NMR, laC NMR and IR spectra. Crystal loliolide (1) and sulfur-gamma (4) were identified by X-ray diffraction. Octadecanedioic acid (5) was also elucidated. Among them, compound 2 is a new natural compound, loliolide (1) and thymidine (3) are known bioactive substances. The results provided basic research data for exploring their application as medical materials.