ABSTRACT
<p><b>AIM</b>To study the chemical constituents of Knoxia valerianoides Thorel et Pitard.</p><p><b>METHODS</b>Chromatographic methods were used for the isolation and purification. Structures were elucidated on the basis of chemical analysis and spectroscopic data.</p><p><b>RESULTS</b>Three anthraguinones were isolated from K. valerianoides and identified as 1, 3, 5-trihydroxy-2-methyl-6-methoxyl-anthraguinone (kaoxiadin, I), 1, 3, 6-trihydroxy-5-ethoxylmethyl-anthraguinone (II) and 1, 3-dihydroxy-2-methylanthraguinone (rubiadin, III).</p><p><b>CONCLUSION</b>Compound II is a new anthraguinone constituent.</p>
Subject(s)
Anthraquinones , Chemistry , Magnetic Resonance Spectroscopy , Molecular Structure , Plant Tubers , Chemistry , Plants, Medicinal , Chemistry , Rubiaceae , ChemistryABSTRACT
<p><b>AIM</b>To study chemical constituents of Knoxia valerianoides Thorel et Pitard.</p><p><b>METHODS</b>Chromatographic methods were used for the isolation and purification. Structures was elucidated on the basis of chemical analysis and spectroscopic data.</p><p><b>RESULTS</b>Two anthraquinone were isolated from Knoxia valerianoides Thorel et Pitard and identified as 1,3,5-trihydroxy-2-ethoxymethyl-6-methoxyl-anthraquinone (I) and 1,3-dihydroxy-2-ethoxymethyl-anthraquinone (II).</p><p><b>CONCLUSION</b>The compound I was found to be a novel anthraquinone constituent and II was isolated from Knoxia valerianoides Thorel et Pitard for the first time.</p>
Subject(s)
Anthraquinones , Chemistry , Molecular Structure , Plant Tubers , Chemistry , Plants, Medicinal , Chemistry , Rubiaceae , ChemistryABSTRACT
<p><b>AIM</b>To study the alkaloid constituents of the hairy roots of Ipomoea batatas Lam.</p><p><b>METHODS</b>Chromatographic methods were used for isolation and purification. The structure was elucidated on the basis of spectral data.</p><p><b>RESULTS</b>An alkaloid was isolated from the hairy roots of Ipomoea batatas.</p><p><b>CONCLUSION</b>The compound is a novel indole-type alkaloid, which is named as ipomine A.</p>
Subject(s)
Indole Alkaloids , Chemistry , Ipomoea batatas , Chemistry , Molecular Conformation , Molecular Structure , Plant Roots , Chemistry , Plants, Medicinal , ChemistryABSTRACT
<p><b>AIM</b>To study the alkaloid constituents of Huperzia serrata (Thunb.) Trev..</p><p><b>METHODS</b>Chromatographic methods were used for the isolation and purification. Structure was elucidated on the basis of chemical analysis and spectroscopic data.</p><p><b>RESULTS</b>An alkaloid constituent was isolated from H. serrata (Thunb.) Trev..</p><p><b>CONCLUSION</b>The compound was found to be a novel lycodine type alkaloid with tricyclic structure named huperzinine C.</p>
Subject(s)
Huperzia , Chemistry , Molecular Conformation , Molecular Structure , Plants, Medicinal , Chemistry , Pyridines , ChemistryABSTRACT
<p><b>AIM</b>To study the alkaloid constituents of Huperzia serrata (Thunb.) Trev..</p><p><b>METHODS</b>Chromatographic methods were used for the isolation and purification. Structure was elucidated on the basis of chemical analysis and spectroscopic data.</p><p><b>RESULTS</b>An alkaloid constituent was isolated from H. serrata (Thumb.) Trev..</p><p><b>CONCLUSION</b>The compound was found to be a novel phlegmariurine type alkaloid, named 8 beta-hydroxy phlegmariurine B.</p>
Subject(s)
Heterocyclic Compounds, 3-Ring , Chemistry , Huperzia , Chemistry , Molecular Conformation , Molecular Structure , Plants, Medicinal , ChemistryABSTRACT
Objective: To study the alkaloid constituents of Huperzia serrata (Thunb.) Trev.. Methods: Various chromatographies were used for separation and purification of the alkaloids and spectroscopic analysis was used for determination of the chemical structure. Results: An alkaloid constituent(alkaloid A) was isolated from H. serrata . Conclusion: Alkaloid A was a new compound, named huperzinine B.