A new polyacetylene glycoside,（1,3Z,11E）-tridecatriene-7,9-diyne-5-hydroxyl-6-O-β-D-glucopyranoside,was isolated from the rhizomes of Atractylodes lancea（Thunb.） DC.Its structure was elucidated on the basis of sp...A new polyacetylene glycoside,（1,3Z,11E）-tridecatriene-7,9-diyne-5-hydroxyl-6-O-β-D-glucopyranoside,was isolated from the rhizomes of Atractylodes lancea（Thunb.） DC.Its structure was elucidated on the basis of spectral analysis.展开更多
A new flavonoid glucoside with a known one was isolated from the leaves of Cassia angustifolia. Based on the spectral analysis, including MS, ^1H NMR, ^13C NMR, DEPT, ^1H-1HCOSY, HMQC, HMBC and NOSEY, their chemical s...A new flavonoid glucoside with a known one was isolated from the leaves of Cassia angustifolia. Based on the spectral analysis, including MS, ^1H NMR, ^13C NMR, DEPT, ^1H-1HCOSY, HMQC, HMBC and NOSEY, their chemical structures were determined as kaempferol-3-O-[（6＇＇＇-O-trans-sinnapoyt）-β-D-glucopyranosyl （1 → 6）]-β-D-glucopyranoside 1 and apigenin-6,8-di-C-glycoside 2.展开更多
A new ionone glycoside （6R,9R）-blumenyl α-L-rhamnopyranosyl-（1 → 6）-β-D-gluco-pyranoside （1）, together with a new natural product 2-methoxyl-4-trans-pmpenyl-phenol α-L-rhamnopyranosyl-（1 → 6）-β-D-glucopy...A new ionone glycoside （6R,9R）-blumenyl α-L-rhamnopyranosyl-（1 → 6）-β-D-gluco-pyranoside （1）, together with a new natural product 2-methoxyl-4-trans-pmpenyl-phenol α-L-rhamnopyranosyl-（1 → 6）-β-D-glucopyranoside （2）, was isolated from the leaves ofNeoalsomitra integrifoliola. Their structures were elucidated by chemical and spectral analysis. Compound 1 showed weak anti-inflammatory and low-level antioxidant activities.展开更多
A new coumarin glycoside was isolated from the ethanol extract of the barks of stem of Daphne giraldii Nitsche. Its structure was defined as daphnetin 8-O-β-D-glucopyranosyl-（1 → 6）-β-D-glucopyranoside on the bas...A new coumarin glycoside was isolated from the ethanol extract of the barks of stem of Daphne giraldii Nitsche. Its structure was defined as daphnetin 8-O-β-D-glucopyranosyl-（1 → 6）-β-D-glucopyranoside on the basis of spectral evidences.展开更多
A new phenolic compound was isolated from the ethanol extract of the bulbs of Crinum asiaticum L.var.sinicum Baker.Its structure was defined as 1-（2-hydroxy-4-hydroxymethyl）phenyl-6-O-caffeoyl-β-D-gluco-pyranoside ...A new phenolic compound was isolated from the ethanol extract of the bulbs of Crinum asiaticum L.var.sinicum Baker.Its structure was defined as 1-（2-hydroxy-4-hydroxymethyl）phenyl-6-O-caffeoyl-β-D-gluco-pyranoside on the basis of spectroscopic evidences.展开更多
对砂仁的化学成分进行研究,采用硅胶、葡聚糖凝胶LH-20、Rp-C18和MCI GEL CHP20P柱色谱,以及制备薄层色谱、HPLC等分离手段,从中分离得到8个萜类化合物,利用HR-ESI-MS、1D和2D NMR、IR、UV、[α]D和ECD等波谱技术鉴定为kravanhin A 3-O-...对砂仁的化学成分进行研究,采用硅胶、葡聚糖凝胶LH-20、Rp-C18和MCI GEL CHP20P柱色谱,以及制备薄层色谱、HPLC等分离手段,从中分离得到8个萜类化合物,利用HR-ESI-MS、1D和2D NMR、IR、UV、[α]D和ECD等波谱技术鉴定为kravanhin A 3-O-β-D-glucopyranoside (1)、kravanhin B (2)、6-eudesmene-1β,4β-diol (3)、oplodiol (4)、vicodiol (5)、(1R,2S,4R,7S)-vicodiol 9-O-β-D-glucopyranoside (6)、(1R,2S,4S,5R)-angelicoidenol 2-O-β-D-glucopyranoside (7)和(1S,2S,4R,6S)-bornane-2,6-diol 2-O-β-D-glucopyranoside (8)。其中化合物1为新化合物,化合物2~5为首次从砂仁中分离得到。采用STC-1细胞模型和2种酶学(GPa和PTP1B)模型对上述8个化合物进行降血糖活性测试,发现化合物1、7、8在浓度为25.0μmol·L-1时,对GLP-1的促泌率分别为692.8%、398.6%、483.3%;化合物6对GPa具有显著抑制活性,IC50为78.6μmol·L-1。展开更多
文摘A new polyacetylene glycoside,（1,3Z,11E）-tridecatriene-7,9-diyne-5-hydroxyl-6-O-β-D-glucopyranoside,was isolated from the rhizomes of Atractylodes lancea（Thunb.） DC.Its structure was elucidated on the basis of spectral analysis.
文摘A new flavonoid glucoside with a known one was isolated from the leaves of Cassia angustifolia. Based on the spectral analysis, including MS, ^1H NMR, ^13C NMR, DEPT, ^1H-1HCOSY, HMQC, HMBC and NOSEY, their chemical structures were determined as kaempferol-3-O-[（6＇＇＇-O-trans-sinnapoyt）-β-D-glucopyranosyl （1 → 6）]-β-D-glucopyranoside 1 and apigenin-6,8-di-C-glycoside 2.
基金the National science fund for Distinguished Young Scholars (No.30625040)the Key Project of Natural Science Foundation of China (No.20432030)+1 种基金"973"Project (No.2004CB518906)PCSIRT (No.IRT0514).
文摘A new ionone glycoside （6R,9R）-blumenyl α-L-rhamnopyranosyl-（1 → 6）-β-D-gluco-pyranoside （1）, together with a new natural product 2-methoxyl-4-trans-pmpenyl-phenol α-L-rhamnopyranosyl-（1 → 6）-β-D-glucopyranoside （2）, was isolated from the leaves ofNeoalsomitra integrifoliola. Their structures were elucidated by chemical and spectral analysis. Compound 1 showed weak anti-inflammatory and low-level antioxidant activities.
文摘A new coumarin glycoside was isolated from the ethanol extract of the barks of stem of Daphne giraldii Nitsche. Its structure was defined as daphnetin 8-O-β-D-glucopyranosyl-（1 → 6）-β-D-glucopyranoside on the basis of spectral evidences.
基金supported by program for Changjiang Scholars and Innovative Research Team in University(PCSIRT),the National Natural Science Foundation of China(No.20402024)the Scientific Foundation of Shanghai of China(No.05DZ19733,06DZ19717,and 06DZ19005).
文摘A new phenolic compound was isolated from the ethanol extract of the bulbs of Crinum asiaticum L.var.sinicum Baker.Its structure was defined as 1-（2-hydroxy-4-hydroxymethyl）phenyl-6-O-caffeoyl-β-D-gluco-pyranoside on the basis of spectroscopic evidences.
