[Objectives] To establish a HPLC method for the quantitative determination of cinnamic acid in Stephania longa Lour. [Methods]The chromatographic column: Thermo BDS HYPERSIL C_(18)( 4. 6 mm × 250 mm,5 μm); mobil...[Objectives] To establish a HPLC method for the quantitative determination of cinnamic acid in Stephania longa Lour. [Methods]The chromatographic column: Thermo BDS HYPERSIL C_(18)( 4. 6 mm × 250 mm,5 μm); mobile phase: acetonitrile-0. 1% phosphoric acid( 24∶ 76); flow rate: 1 mL/min; column temperature: 30℃; wavelength: 285 nm. [Results]The cinnamic acid was in a good linear relationship in the range of 0. 021 7-0. 076 μg,the sample recovery rate was 100. 46%,the RSD was 2. 20%,and the content was in the range of 0. 004%-0. 022%. [Conclusions] The method is simple,accurate and reproducible,and can be used for the quality control of S. longa Lour.展开更多
Two unusual nitro-substituted hasubanan-type alkaloids, stephalonines J (1) and K (2), together with ten known alkaloids, protostephanine, dehydrostephanine, (-)-stephanine, (-)-isolaureline, R-roemeroline, ...Two unusual nitro-substituted hasubanan-type alkaloids, stephalonines J (1) and K (2), together with ten known alkaloids, protostephanine, dehydrostephanine, (-)-stephanine, (-)-isolaureline, R-roemeroline, (+)-pronuciferine, ( +)-stephafine, ( + )-N-acetylstephafine, ( + )-lirioferine, and ( + )-norlirioferine, were isolated from the whole plant of Stephania longa. Their structures were characterized mainly by spectroscopic methods including IR, MS, and NMR experiments, and the structures of 1 and 2 were further confirmed through chemical correlations with the known alkaloids stephalonines A (1a) and B (2a), respectively.展开更多
目的:对岭南民间草药粪箕笃Stephania longa Lour.进行基源鉴别、药材性状描述和茎叶结构及药材粉末特征的显微鉴定。方法:采用经典生药学方法进行基源鉴别和药材性状描述;以常规石蜡切片、临时水装片及水合氯醛粉末透化片对其显微结构...目的:对岭南民间草药粪箕笃Stephania longa Lour.进行基源鉴别、药材性状描述和茎叶结构及药材粉末特征的显微鉴定。方法:采用经典生药学方法进行基源鉴别和药材性状描述;以常规石蜡切片、临时水装片及水合氯醛粉末透化片对其显微结构进行鉴定分析。结果:粪箕笃的药材和显微特征主要有:叶盾状着生,叶背常为粉白色,叶柄长,基部常扭曲。茎有棱,最外侧表皮细胞栓质化增厚,维管束外韧型,韧皮部外纤维连成一花环状。叶肉栅栏组织短,细胞2列,在叶脉附近易见细小草酸钙柱晶或方晶。下表皮细胞垂周壁弯曲,其上多数细胞乳头状突起,气孔不定式,副卫细胞4~6个。结论:本实验可为粪箕笃的药材鉴定及质量标准的制定提供科学依据。展开更多
基金Supported by Project of National Natural Science Foundation(8126067381660701)+1 种基金Scientific Research Innovation Program of Guangxi University of Chinese Medicine(JS201625)Program of Key Laboratory for Purification and Quality Analysis of TCM Extraction in Guangxi Universities(Gui Jiao Ke Yan[2014]No.6)
文摘[Objectives] To establish a HPLC method for the quantitative determination of cinnamic acid in Stephania longa Lour. [Methods]The chromatographic column: Thermo BDS HYPERSIL C_(18)( 4. 6 mm × 250 mm,5 μm); mobile phase: acetonitrile-0. 1% phosphoric acid( 24∶ 76); flow rate: 1 mL/min; column temperature: 30℃; wavelength: 285 nm. [Results]The cinnamic acid was in a good linear relationship in the range of 0. 021 7-0. 076 μg,the sample recovery rate was 100. 46%,the RSD was 2. 20%,and the content was in the range of 0. 004%-0. 022%. [Conclusions] The method is simple,accurate and reproducible,and can be used for the quality control of S. longa Lour.
基金Project supported by the National Natural Science Foundation of China (No. 30025044), Shanghai Municipal Scientific Foundation (No. 04XD 14019), and the Foundation from the Ministry of Science and Technology (No. 2002CB512807) of China.
文摘Two unusual nitro-substituted hasubanan-type alkaloids, stephalonines J (1) and K (2), together with ten known alkaloids, protostephanine, dehydrostephanine, (-)-stephanine, (-)-isolaureline, R-roemeroline, (+)-pronuciferine, ( +)-stephafine, ( + )-N-acetylstephafine, ( + )-lirioferine, and ( + )-norlirioferine, were isolated from the whole plant of Stephania longa. Their structures were characterized mainly by spectroscopic methods including IR, MS, and NMR experiments, and the structures of 1 and 2 were further confirmed through chemical correlations with the known alkaloids stephalonines A (1a) and B (2a), respectively.
文摘目的:对岭南民间草药粪箕笃Stephania longa Lour.进行基源鉴别、药材性状描述和茎叶结构及药材粉末特征的显微鉴定。方法:采用经典生药学方法进行基源鉴别和药材性状描述;以常规石蜡切片、临时水装片及水合氯醛粉末透化片对其显微结构进行鉴定分析。结果:粪箕笃的药材和显微特征主要有:叶盾状着生,叶背常为粉白色,叶柄长,基部常扭曲。茎有棱,最外侧表皮细胞栓质化增厚,维管束外韧型,韧皮部外纤维连成一花环状。叶肉栅栏组织短,细胞2列,在叶脉附近易见细小草酸钙柱晶或方晶。下表皮细胞垂周壁弯曲,其上多数细胞乳头状突起,气孔不定式,副卫细胞4~6个。结论:本实验可为粪箕笃的药材鉴定及质量标准的制定提供科学依据。