ABSTRACT
Application of a combination of various chromatographic techniques including column chromatography over silica gel, Sephadex LH-20, macroporous adsorbent resin, and reversed-phase HPLC, led to the isolation of 173 compounds including irdidoids, monoterpenes, sesquiterpenes, triterpenes, lignans, flavonoids, and simple aromatic derivatives from the ethyl acetate-soluble fraction of the whole plants of Valeriana jatamansi(Valerianaceae), and their structures were elucidated by spectroscopic methods including 1D, 2D NMR UV, IR, and MS techniques. Among them, 77 compounds were new. In previous reports, we have described the isolation, structure elucidation, and bioactivities of 68 new and 25 known compounds. As a consequence, we herein reported the isolation and structure elucidation of the remaining 9 new and 71 known compounds, the structure revision of valeriotriate A(8a), as well as cytotoxicity of some compounds.
Subject(s)
Acetates , Chromatography, High Pressure Liquid , Flavonoids , Iridoids , Lignans , Molecular Structure , Monoterpenes , Phytochemicals , Plant Extracts , Chemistry , Sesquiterpenes , Triterpenes , Valerian , ChemistryABSTRACT
Shexiang Baoxin pill(SBP) is widely used for treating coronary heart disease in clinic, with ginsenosides as its main effective component. This study was designed to investigate and compare the pharmacokinetic characteristics of five ginsenosides of five compounds after multiple oral administrations, ginseng extract(GE) and SBP in myocardial infarction rats. After intragastric administration to myocardial infarction rats, the plasma samples were analyzed by liquid chromatography tandem triple-quad mass spectrometry. The results showed that Cmax of five compounds in all groups were less than 200 μg•L⁻¹. Tmax of corresponding analytes between groups revealed that ginsenosides in both SBP and GE were absorbed faster than each of the five compounds, indicating that GE and compounds contain components promoting absorption of ginsenosides. The oral administration doses of ginsenosides in SBP were the least in all groups, but with the greatest AUC0-tand AUCINF, which indicated that ginsenosides in SBP had the best absorption in all groups after oral administration to myocardial infarction rats. This study also demonstrated that compound is the best form of traditional Chinese medicine.
ABSTRACT
In the post-genomic era, biological studies are characterized by the rapid development and wide application of a series of "omics" technologies, including genomics, proteomics, metabolomics, transcriptomics, lipidomics, cytomics, metallomics, ionomics, interactomics, and phenomics. These "omics" are often based on global analyses of biological samples using high through-put analytical approaches and bioinformatics and may provide new insights into biological phenomena. In this paper, the development and advances in these omics made in the past decades are reviewed, especially genomics, transcriptomics, proteomics and metabolomics; the applications of omics technologies in pharmaceutical research are then summarized in the fields of drug target discovery, toxicity evaluation, personalized medicine, and traditional Chinese medicine; and finally, the limitations of omics are discussed, along with the future challenges associated with the multi-omics data processing, dynamics omics analysis, and analytical approaches, as well as amenable solutions and future prospects.
Subject(s)
Biomedical Research , Methods , Gene Expression Profiling , Genomics , Metabolomics , Pharmacology , ProteomicsABSTRACT
<p><b>OBJECTIVE</b>To study the chemical constituents from the roots and rhizome of Cynanchum atratum.</p><p><b>METHOD</b>The chemical constituents were isolated and repeatedly purified by silica gel chromatography and the structures were elucidated by the NMR spectra and physicochemical properties.</p><p><b>RESULT</b>Twelve compounds were obtained and nine of them were identified as 2, 4-dihyroxyacetophe none (1), 2, 6-dihyroxyacetophenone (2), 4-hydroxybenzenemethanol (3), benzoic acid (4), beta-amyrin acetate (5), palmitic acid (6), beta-sitosterol (7), beta-daucosterol (8), glaucogenin C-3-O-alpha-D-oleandropyranosyl-(1 --> 4)-beta-D-digitoxopyranosyl-(1 -->4)-alpha-D-oleandropyranoside (9).</p><p><b>CONCLUSION</b>Seven compounds were obtained from C. atratum for the first time.</p>
Subject(s)
Benzoic Acid , Chemistry , Chromatography, Gel , Cynanchum , Chemistry , Oleanolic Acid , Chemistry , Palmitic Acid , Chemistry , Plant Roots , Chemistry , Plants, Medicinal , Chemistry , Silica Gel , Silicon DioxideABSTRACT
<p><b>OBJECTIVE</b>To study the chemical constituents of Zanthoxylum nitidum.</p><p><b>METHOD</b>Column chromatography on Silica gel and Sephadex LH - 20, and recrystallization were applied for the isolation and purification of the constituents. The structures were elucidated on the basis of spectral analysis, chemical evidences and by comparison with the data reported in literature.</p><p><b>RESULT</b>From the CHCl3 fraction and n-butanol fraction of the EtOH extract of the roots of Z. nitidum, 10 compounds were isolated and identified as 2, 4-dihydroxypyrimidine (1), syringic acid (2) , 2, 6-dimethoxy-1, 4-benzoquinone (3) , 4-hydroxybenzoic acid (4), ethylparaben (5), (Z)-3-(2, 3, 4-trimethoxyphenyl) acrylic acid (6), 5, 6, 7-trimethoxycoumarin (7), stigmast-9 (11) -en-3-ol (8), daucosterol (9), beta-sitosterol (10).</p><p><b>CONCLUSION</b>Compounds 1-9 were isolated and identified from the roots of Z. nitidum for the first time. Furthermore, we note here the first isolation of compound 6 as a natural product.</p>
Subject(s)
Acrylates , Chemistry , Gallic Acid , Chemistry , Parabens , Chemistry , Plant Roots , Chemistry , Plants, Medicinal , Chemistry , Zanthoxylum , ChemistryABSTRACT
<p><b>OBJECTIVE</b>To study the chemical constituents from Daphne odora var. atrocaulis.</p><p><b>METHOD</b>The chemical constituents were isolated and repeatedly purified by silica gel column chromatography and the structures were elucidated by the NMR spectra and physicochemical properties.</p><p><b>RESULT</b>Sixteen compounds were obtained and nine of them were identified as beta-sitosterol, 4-hydroxy ethylbenzoate, (2E),-2-propenoic acid,3-(3,4-dihydroxyphenyl)-decosylester, genkwanin, 2,4-dihydroxypyrimidine, daphnetin, daphnoretin, 5,7,4'-trihydroxyflavone-3ol, daucosterol.</p><p><b>CONCLUSION</b>Seven compounds were obtained from D. odora var. atrocaulis. for the first time.</p>
Subject(s)
Coumarins , Chemistry , Daphne , Chemistry , Flavones , Chemistry , Plant Roots , Chemistry , Plants, Medicinal , Chemistry , Umbelliferones , ChemistryABSTRACT
<p><b>OBJECTIVE</b>To study the chemical constituents of Ervatamia hainanensis.</p><p><b>METHOD</b>The compounds were separated and purified by column chromatography with silica gel, and identified by IR, MS, NMR and 2D-NMR.</p><p><b>RESULT</b>Five compounds were identified as I (isolariciresinol 9-O-beta-D-glucopyranoside), II (cycloartenol), III (beta-amyrin acetate), IV (beta-sitosterol), V (daucosterol), respectively.</p><p><b>CONCLUSION</b>All the compounds were isolated from this plant for the first time.</p>