scholarly journals Melitidin: A Flavanone Glycoside from Citrus grandis ‘Tomentosa’

2013 ◽  
Vol 8 (4) ◽  
pp. 1934578X1300800 ◽  
Author(s):  
Wei Zou ◽  
Yonggang Wang ◽  
Haibin Liu ◽  
Yulong Luo ◽  
Si Chen ◽  
...  
Keyword(s):  
Citric Acid ◽  
Chinese Medicine ◽  
Mass Spectrometric ◽  
Mass Spectrometric Data ◽  
Spectrometric Data ◽  
Antitussive Effect ◽  
First Time ◽  
Flavanone Glycoside ◽  
Resolution Mass ◽  
C Nmr

Citrus grandis ‘Tomentosa’ is a traditional Chinese medicine, used as an antitussive. In this research, melitidin, a flavanone glycoside, was isolated from this species for the first time by using chromatographic methods. The structure was confirmed through comprehensive analyses of its ultraviolet, infrared, 1H and 13C NMR, HMBC and HMQC spectroscopic and high-resolution mass spectrometric data. Meliditin showed a good antitussive effect on cough induced by citric acid in Guinea pig, suggesting that it was a contributor to the antitussive effect of C. grandis ‘Tomentosa’.

scholarly journals Stereochemistry and NMR Data Assignment of Cyclopeptide Alkaloids from Zizyphus Oxyphylla

2010 ◽  
Vol 5 (8) ◽  
pp. 1934578X1000500
Author(s):  
Muhammad Nisar ◽  
Waqar Ahmad Kaleem ◽  
Achyut Adhikari ◽  
Zulfiqar Ali ◽  
Nusrat Hussain ◽  
...  
Keyword(s):  
Spectroscopic Data ◽  
Mass Spectrometric ◽  
Mass Spectrometric Data ◽  
Spectrometric Data ◽  
Nmr Data ◽  
Cyclopeptide Alkaloids ◽  
First Time ◽  
C Nmr

The structures of (3 S,7 R,13 S)-6-[2-(dimethylamino)-3-phenylpropanoyl]-19-methoxy-2-oxa-6,9,15-triazatetracyclo[16.3.1.03,7. 09,13]docosa-1-(22),16,18,20-tetraene-8,14-dione (1), nummularin-C (2) and nummularin-R (3) have been previously determined mainly based on mass spectrometric data. Stereochemistry and complete 1H and 13C NMR spectroscopic data assignments of these compounds are now described. Compounds 1 and 2 are reported for the first time from

scholarly journals A Phenethyl bromo ester from Citharexylum fruticosum

2010 ◽  
Vol 5 (3) ◽  
pp. 1934578X1000500
Author(s):  
Seru Ganapaty ◽  
Desaraju Venkata Rao ◽  
Steve Thomas Pannakal
Keyword(s):  
High Resolution ◽  
Structure Elucidation ◽  
Stem Bark ◽  
Mass Spectrometric ◽  
Mass Spectrometric Data ◽  
Spectrometric Data ◽  
High Resolution Mass ◽  
Resolution Mass

A new compound, (2 S)- p-hydroxyphenethyl 2-bromo-2-methyldodeconate (1) and 7,3′-dimethoxy-5,4′-dihydroxy flavone, together with lupeol and stigmasterol were isolated from the stem bark of Citharexylum fruticosum (Verbenaceae). The structures of the compounds were established on the basis of the interpretation of NMR (1H, 13C, COSY and HMBC) spectra, as well as low and high-resolution mass spectrometric data. In this paper, we report on the structure elucidation of 1.

scholarly journals Characterization of Eight Novel Spiroleptosphols from Fusarium avenaceum

Molecules ◽  
2019 ◽  
Vol 24 (19) ◽  
pp. 3498 ◽  
Author(s):  
Klaus Ringsborg Westphal ◽  
Manuela Ilse Helga Werner ◽  
Katrine Amalie Hamborg Nielsen ◽  
Jens Laurids Sørensen ◽  
Valery Andrushchenko ◽  
...  
Keyword(s):  
Mass Spectrometric ◽  
Vibrational Circular Dichroism ◽  
Fusarium Avenaceum ◽  
Chemical Analyses ◽  
Mass Spectrometric Data ◽  
Spectrometric Data ◽  
Relative Stereochemistry ◽  
Absolute Stereochemistry ◽  
Resolution Mass

Chemical analyses of Fusarium avenaceum grown on banana medium resulted in eight novel spiroleptosphols, T1, T2 and U–Z (1–8). The structures were elucidated by a combination of high-resolution mass spectrometric data and 1- and 2-D NMR experiments. The relative stereochemistry was assigned by 1H coupling and NOESY/ROESY experiments. Absolute stereochemistry established for 7 by vibrational circular dichroism was found analogous to that of the putative polyketide spiroleptosphol from Leptosphaeria doliolum.

Automated Isotopic Profile Deconvolution for High Resolution Mass Spectrometric Data (APGC-QToF) from Biological Matrices

2019 ◽  
Vol 91 (24) ◽  
pp. 15509-15517 ◽  
Author(s):  
Sadjad Fakouri Baygi ◽  
Sujan Fernando ◽  
Philip K. Hopke ◽  
Thomas M. Holsen ◽  
Bernard S. Crimmins
Keyword(s):  
High Resolution ◽  
Mass Spectrometric ◽  
Biological Matrices ◽  
Mass Spectrometric Data ◽  
Spectrometric Data ◽  
High Resolution Mass ◽  
Isotopic Profile ◽  
Resolution Mass

scholarly journals Chemical Constituents of Gentiana Macrophylla Pall. From Shaanxi

2006 ◽  
Vol 1 (7) ◽  
pp. 1934578X0600100 ◽  
Author(s):  
Qianliang Chen ◽  
Wenji Sun ◽  
Guangzhong Tu ◽  
Zhangyan Shi ◽  
Yongmin Zhang
Keyword(s):  
Oleanolic Acid ◽  
Chemical Constituents ◽  
2D Nmr ◽  
Mass Spectrometric ◽  
Shaanxi Province ◽  
The Novel ◽  
Mass Spectrometric Data ◽  
Spectrometric Data ◽  
Gentiana Macrophylla ◽  
First Time

A novel amide, qinjiaoamide and a novel iridoid, erythrocentaurin acid, together with seven known compounds [erythrocentaurin (3), roburic acid (4), oleanolic acid (5), gentiopicroside (6), swertiamarine (7), sweroside (8), and 6′-O-β-D-glucosylgentiopicroside (9)], were isolated from the root of Gentiana macrophylla Pall. from Shaanxi Province, China. The novel compounds were identified as N-pentacosyl-2-carboxy-benzoyl amide (1) and 5-carboxyl-3,4-dihydrogen-1H-2-benzopyran-1-one (2), on the basis of spectroscopic (UV, IR, 1D- and 2D-NMR) and mass spectrometric data. Among the known compounds, erythrocentaurin (3) was isolated from the genus Gentiana for the first time.

scholarly journals Proteome Scale-Protein Turnover Analysis Using High Resolution Mass Spectrometric Data from Stable-Isotope Labeled Plants

2016 ◽  
Vol 15 (3) ◽  
pp. 851-867 ◽  
Author(s):  
Kai-Ting Fan ◽  
Aaron K. Rendahl ◽  
Wen-Ping Chen ◽  
Dana M. Freund ◽  
William M. Gray ◽  
...  
Keyword(s):  
High Resolution ◽  
Stable Isotope ◽  
Protein Turnover ◽  
Mass Spectrometric ◽  
Mass Spectrometric Data ◽  
Spectrometric Data ◽  
High Resolution Mass ◽  
Resolution Mass
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