目的:采用高效液相色谱法测定化合物ent-kaur-16-en-19-oic ac id在光叶番荔枝不同部位和番荔枝属不同种类植物叶子中的含量。方法:色谱条件为:Nuc leosil C18色谱柱,流动相选用乙睛:水(含1%冰醋酸)=67.5:32.5,检测波长211nm。结果:平...目的:采用高效液相色谱法测定化合物ent-kaur-16-en-19-oic ac id在光叶番荔枝不同部位和番荔枝属不同种类植物叶子中的含量。方法:色谱条件为:Nuc leosil C18色谱柱,流动相选用乙睛:水(含1%冰醋酸)=67.5:32.5,检测波长211nm。结果:平均回收率为98.41%,光叶番荔枝树皮、光叶番荔枝树枝(去皮)、光叶番荔枝树叶、AP番荔枝树叶、牛心番荔枝树叶、山刺番荔枝树叶中化合物ent-kaur-16-en-19-oic ac id的含量分别为0.7147%、0.01252%、0.01773%、0.04212%、0.007305%、0.09083%。结论:在光叶番荔枝各部位中,树皮的含量最高,达0.7147%,在所测番荔枝属植物的树叶中,山刺番荔枝树叶中含量最高,达0.09083%。展开更多
From the fruit of Rosa davidii Crep., eleven compounds were isolated and identified by spectral evidence, viz. 2 alpha, 3 beta, 19 beta -trihydroxyl-olean-12-en-28-oic acid (1), 2 alpha, 3 beta -dihydroxyl-urs-28 (13)...From the fruit of Rosa davidii Crep., eleven compounds were isolated and identified by spectral evidence, viz. 2 alpha, 3 beta, 19 beta -trihydroxyl-olean-12-en-28-oic acid (1), 2 alpha, 3 beta -dihydroxyl-urs-28 (13)-lactone (2), arjunic acid (3), euscaphic acid (4), 2 alpha, 3 beta -dihydroxyl-urs-12-en-28-oic acid (5), oleanolic acid (6), kaempferol (7), tiliroside (8), quercetin (9), daucosterol (10) and beta -sitosterol (11). Among them, 1 and 2 were new compounds.展开更多
Four diterpenoids, including a new ent-kaurane diterpene (1), were isolated from the rhizome of Aralia fargesii Franch. On the basis of chemical and spectral evidence (IR, EI-MS, HREI-MS, H-1-NMR, C-13-NMR and HMQC), ...Four diterpenoids, including a new ent-kaurane diterpene (1), were isolated from the rhizome of Aralia fargesii Franch. On the basis of chemical and spectral evidence (IR, EI-MS, HREI-MS, H-1-NMR, C-13-NMR and HMQC), the structure of compound 1 was established to be 17-acetoxy-16alpha-ent-kauran-19-oic acid The other three known compounds were identified as ent-pimera-8(14) 15-dien-19-oic acid (2), 16alpha-hydroxy-( -)-kauran-19-oic acid (3) and 16alpha-17-dihydroxy-ent-kauran-19-oic acid (4). The three known diterpenoids were obtained from this plant for the first time.展开更多
A new oleanane-type triterpene was isolated from the roots of Doellingeria scaber. Its structure was identified as 3-oxo-16a-hydroxy-olean-12-en-28-oic acid based on 1D and 2D NMR spectroscopy and X-ray analysis.
A new ent-kaurane diterpene was isolated from the rhizome of Aralia fargesii. On the basis of chemical and spectral evidences, its structure was established as 16 alpha-hydroxy-17-isovaleroyloxy-ent-kauran-19-oic acid.
Two new triterpenes, 2α,3β-dihydroxyurs- 12-en- 18,19-epoxy-28-oic acid （1） and 18,19-seco, 2α, 2α-dihydroxyl-19-oxo-urs- 11,13（18）-dien-28-oic acid （2） were isolated from the herbaceous part of Duchesnea in...Two new triterpenes, 2α,3β-dihydroxyurs- 12-en- 18,19-epoxy-28-oic acid （1） and 18,19-seco, 2α, 2α-dihydroxyl-19-oxo-urs- 11,13（18）-dien-28-oic acid （2） were isolated from the herbaceous part of Duchesnea indica. Their structures were elucidated by spectroscopic analysis, including 2D NMR technique. The isolated compounds exhibited moderate cytotoxic activities against HeLa and L929 cell lines.展开更多
目的:探讨Ent-11α-hydroxy-15-oxo-kaur-16-en-19-oic-acid(5F)对人绒癌JAR细胞侵袭、转移、黏附的影响及MMP-9、VEGF表达的变化。方法:用不同浓度的5F作用JAR细胞,MTT比色法,Transwell小室,细胞黏附实验观察其增殖、侵袭、迁移、黏附...目的:探讨Ent-11α-hydroxy-15-oxo-kaur-16-en-19-oic-acid(5F)对人绒癌JAR细胞侵袭、转移、黏附的影响及MMP-9、VEGF表达的变化。方法:用不同浓度的5F作用JAR细胞,MTT比色法,Transwell小室,细胞黏附实验观察其增殖、侵袭、迁移、黏附能力的变化;Western blot方法检测5F对JAR细胞MMP-9、VEGF表达水平的影响。结果:作用6 h,5F能抑制JAR细胞的增殖、转移、侵袭、黏附,其抑制率呈剂量效应(P<0.05)。5F作用24 h JAR细胞,MMP-9、VEGF蛋白表达水平能明显下调。结论:5F能抑制JAR细胞的侵袭、转移、黏附并下调MMP-9、VEGF蛋白表达水平。展开更多
文摘目的:采用高效液相色谱法测定化合物ent-kaur-16-en-19-oic ac id在光叶番荔枝不同部位和番荔枝属不同种类植物叶子中的含量。方法:色谱条件为:Nuc leosil C18色谱柱,流动相选用乙睛:水(含1%冰醋酸)=67.5:32.5,检测波长211nm。结果:平均回收率为98.41%,光叶番荔枝树皮、光叶番荔枝树枝(去皮)、光叶番荔枝树叶、AP番荔枝树叶、牛心番荔枝树叶、山刺番荔枝树叶中化合物ent-kaur-16-en-19-oic ac id的含量分别为0.7147%、0.01252%、0.01773%、0.04212%、0.007305%、0.09083%。结论:在光叶番荔枝各部位中,树皮的含量最高,达0.7147%,在所测番荔枝属植物的树叶中,山刺番荔枝树叶中含量最高,达0.09083%。
文摘Four diterpenoids, including a new ent-kaurane diterpene (1), were isolated from the rhizome of Aralia fargesii Franch. On the basis of chemical and spectral evidence (IR, EI-MS, HREI-MS, H-1-NMR, C-13-NMR and HMQC), the structure of compound 1 was established to be 17-acetoxy-16alpha-ent-kauran-19-oic acid The other three known compounds were identified as ent-pimera-8(14) 15-dien-19-oic acid (2), 16alpha-hydroxy-( -)-kauran-19-oic acid (3) and 16alpha-17-dihydroxy-ent-kauran-19-oic acid (4). The three known diterpenoids were obtained from this plant for the first time.
文摘A new oleanane-type triterpene was isolated from the roots of Doellingeria scaber. Its structure was identified as 3-oxo-16a-hydroxy-olean-12-en-28-oic acid based on 1D and 2D NMR spectroscopy and X-ray analysis.
文摘A new ent-kaurane diterpene was isolated from the rhizome of Aralia fargesii. On the basis of chemical and spectral evidences, its structure was established as 16 alpha-hydroxy-17-isovaleroyloxy-ent-kauran-19-oic acid.
基金sponsored by the Scientific Research Foundation of Tianjin Medical University,Tianjin,China.
文摘Two new triterpenes, 2α,3β-dihydroxyurs- 12-en- 18,19-epoxy-28-oic acid （1） and 18,19-seco, 2α, 2α-dihydroxyl-19-oxo-urs- 11,13（18）-dien-28-oic acid （2） were isolated from the herbaceous part of Duchesnea indica. Their structures were elucidated by spectroscopic analysis, including 2D NMR technique. The isolated compounds exhibited moderate cytotoxic activities against HeLa and L929 cell lines.
文摘目的:探讨Ent-11α-hydroxy-15-oxo-kaur-16-en-19-oic-acid(5F)对人绒癌JAR细胞侵袭、转移、黏附的影响及MMP-9、VEGF表达的变化。方法:用不同浓度的5F作用JAR细胞,MTT比色法,Transwell小室,细胞黏附实验观察其增殖、侵袭、迁移、黏附能力的变化;Western blot方法检测5F对JAR细胞MMP-9、VEGF表达水平的影响。结果:作用6 h,5F能抑制JAR细胞的增殖、转移、侵袭、黏附,其抑制率呈剂量效应(P<0.05)。5F作用24 h JAR细胞,MMP-9、VEGF蛋白表达水平能明显下调。结论:5F能抑制JAR细胞的侵袭、转移、黏附并下调MMP-9、VEGF蛋白表达水平。
基金The project of State Key Laboratory of Phytochemistry and Plant Resourcesin West China (P-06-04) Kunming Institute of Botany,CAS,and the 973 Program(No.2009CB522300)
