A new protoilludane sesquiterpenoid aromatic ester,named armillarizin (1)has been isolated from the artificially cultured mycelium of Armillaria me- llea(Vahl.ex Fr)Quel.(Tricholomataceae).Its structure was deduced on...A new protoilludane sesquiterpenoid aromatic ester,named armillarizin (1)has been isolated from the artificially cultured mycelium of Armillaria me- llea(Vahl.ex Fr)Quel.(Tricholomataceae).Its structure was deduced on the ba- sis of spectral analyses.The relative configuration was established from the nuclear Overhauser effects and from the values of ~1H-~1H coupling constants.展开更多
Objective: To investigate the proximate and mineral composition of the Piper retrofractum(P. retrofractum) vahl. Fruit and to evaluate its total alkaloids, phenol and flavonoid. Methods: The proximate composition of P...Objective: To investigate the proximate and mineral composition of the Piper retrofractum(P. retrofractum) vahl. Fruit and to evaluate its total alkaloids, phenol and flavonoid. Methods: The proximate composition of P. retrofractum fruit was ananlyzed using standard protocols according to Indonesian Standard and Association of Official Analytical Chemist. Meanwhile, mineral composition of the fruit was analyzed using inductively coupled plasma-mass spectrometry. Phytochemical screening and quantification were performed using standard protocols according to Harborn and spectrophotometric methods. Results: The results showed that P. retrofractum fruit contained carbohydrate(63.4%), crude protein(11.4%), total ash(4.29%), dietary fiber(28.8%) and total fat(2.97%). The fruit also contained calcium, copper, iron, magnesium, phosphor, potassium, sodium and zinc in different concentrations. Additionally, quinone, sterol, glycosides and alkaloid were detected in both n-hexane and ethyl acetate extracts. Moreover, tannin was presented also in ethylacetate and methanol extracts. Meanwhile, methanol extract contained sterol, glycosides, flavones, tannin and alkaloid. The results also revealed that methanol extract of the fruit contained highest phenol compared to other extract. Finally, small quantity of flavonoid(0.060 0%±0.000 2%) was observed. Conclusions: The overall results show that P. retrofractum contains potential nutritional and phytochemicals values, which support their function for pharmaceutical purposes.展开更多
Objective:To examine the chemical variability in inflorescences of wild populations of Stachys lavandulifolia Vahl(S.lavandulifolia)collected throughout two provinces(lsfahan and Chaharmahal va Bakhtiary),Southwest Ir...Objective:To examine the chemical variability in inflorescences of wild populations of Stachys lavandulifolia Vahl(S.lavandulifolia)collected throughout two provinces(lsfahan and Chaharmahal va Bakhtiary),Southwest Iran.Methods:The essential oils of S.lavandulifolia Vahl from seven locations were obtained by hydro-distillation and analysed by gas chromatography and gas chromatography-mass spectrometry.Results:The results revealed that distinct differences in the content of compounds depending on region of sample collection.The main constituents of the essential oils wereα-thujone(0.3%-32.3%),α-pinene(trace to 37.3%),myrcene(0.5%-15.9%),β-phellandrene(1.1%-37.9%),germacrene D(0.4%-11.3%),△-cadinene(trace to 11.6%)and 1,4-methano-1 H-indene(trace to 10.1%).Conclusions:The results of the present study indicated that essential oil components of S.lavandulifolia Vahl can be varied with genetic(ecotype),environmental conditions and geographic origin,In general,the essential oils of various populations of S.lavandulifolia Vahl were rich in monoterpenoids and sesquiterpenoids.展开更多
Three new compounds, suspenolic acid (1), forsythenside A (2), and forsythenside B (3) have been isolated from the fruits of Forsythia suspensa. Their structures were elucidated by spectral methods including IR, H-1- ...Three new compounds, suspenolic acid (1), forsythenside A (2), and forsythenside B (3) have been isolated from the fruits of Forsythia suspensa. Their structures were elucidated by spectral methods including IR, H-1- and C-13-NMR, DEPT, H-1-H-1 COSY, H-1-C-13 COSY, NOE difference, HMBC, FABMS, CIMS, and chemical reactions.展开更多
文摘A new protoilludane sesquiterpenoid aromatic ester,named armillarizin (1)has been isolated from the artificially cultured mycelium of Armillaria me- llea(Vahl.ex Fr)Quel.(Tricholomataceae).Its structure was deduced on the ba- sis of spectral analyses.The relative configuration was established from the nuclear Overhauser effects and from the values of ~1H-~1H coupling constants.
基金supported by Directorate General of Resources for Science,Technology and Higher Education,Ministry of Research,Technology and Higher Education of the Republic of Indonesia(grant No.653/PKS/ITS/2017)
文摘Objective: To investigate the proximate and mineral composition of the Piper retrofractum(P. retrofractum) vahl. Fruit and to evaluate its total alkaloids, phenol and flavonoid. Methods: The proximate composition of P. retrofractum fruit was ananlyzed using standard protocols according to Indonesian Standard and Association of Official Analytical Chemist. Meanwhile, mineral composition of the fruit was analyzed using inductively coupled plasma-mass spectrometry. Phytochemical screening and quantification were performed using standard protocols according to Harborn and spectrophotometric methods. Results: The results showed that P. retrofractum fruit contained carbohydrate(63.4%), crude protein(11.4%), total ash(4.29%), dietary fiber(28.8%) and total fat(2.97%). The fruit also contained calcium, copper, iron, magnesium, phosphor, potassium, sodium and zinc in different concentrations. Additionally, quinone, sterol, glycosides and alkaloid were detected in both n-hexane and ethyl acetate extracts. Moreover, tannin was presented also in ethylacetate and methanol extracts. Meanwhile, methanol extract contained sterol, glycosides, flavones, tannin and alkaloid. The results also revealed that methanol extract of the fruit contained highest phenol compared to other extract. Finally, small quantity of flavonoid(0.060 0%±0.000 2%) was observed. Conclusions: The overall results show that P. retrofractum contains potential nutritional and phytochemicals values, which support their function for pharmaceutical purposes.
基金Supported by deputy of Researches and Technology.Islamic Azad University of Shahrckord Branch.Iran(Grant no.IAUSHK:6121)
文摘Objective:To examine the chemical variability in inflorescences of wild populations of Stachys lavandulifolia Vahl(S.lavandulifolia)collected throughout two provinces(lsfahan and Chaharmahal va Bakhtiary),Southwest Iran.Methods:The essential oils of S.lavandulifolia Vahl from seven locations were obtained by hydro-distillation and analysed by gas chromatography and gas chromatography-mass spectrometry.Results:The results revealed that distinct differences in the content of compounds depending on region of sample collection.The main constituents of the essential oils wereα-thujone(0.3%-32.3%),α-pinene(trace to 37.3%),myrcene(0.5%-15.9%),β-phellandrene(1.1%-37.9%),germacrene D(0.4%-11.3%),△-cadinene(trace to 11.6%)and 1,4-methano-1 H-indene(trace to 10.1%).Conclusions:The results of the present study indicated that essential oil components of S.lavandulifolia Vahl can be varied with genetic(ecotype),environmental conditions and geographic origin,In general,the essential oils of various populations of S.lavandulifolia Vahl were rich in monoterpenoids and sesquiterpenoids.
文摘Three new compounds, suspenolic acid (1), forsythenside A (2), and forsythenside B (3) have been isolated from the fruits of Forsythia suspensa. Their structures were elucidated by spectral methods including IR, H-1- and C-13-NMR, DEPT, H-1-H-1 COSY, H-1-C-13 COSY, NOE difference, HMBC, FABMS, CIMS, and chemical reactions.
