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6 rezultati
Alkaloids from Lindera aggregata.
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Eight alkaloids, including a new compound, (+)-norboldine acetate (1), and seven known ones, (+)-norboldine (2), (+)-boldine (3), (+)-laurotetanine (4), (+)-N-methyllaurotetanine (5), (+)-reticuline (6), (-)-pronuciferine (7), and pallidine (8) were isolated from the roots of Lindera aggregata. The
Antinociceptive and free radical scavenging activities of alkaloids isolated from Lindera angustifolia Chen.
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Lindera angustifolia Chen is a folk medicine used for the treatment of contusions-induced swelling, rheumatic pains and bellyache in south and the middle part of China. Phytochemical studies showed that aporphine and benzyltetrahydroisoquinoline alkaloids are the characteristic constituents of this
[Alkaloids from the root of Lindera angustifolia].
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OBJECTIVE
To study the alkaloid constituents of the root of Lindera angustifolia Cheng.
METHODS
The constituents were isolated and purified by column chromatography and the structures were characterized by spectral analysis.
RESULTS
Seven aporphine alkaloids, laurotetanine (I), N-methyllaurotetanine
[Chemical Constituents from the Roots of Lindera glauca and Their Antitumor Activity on Four Different Cancer Cell Lines].
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To study the chemical constitutes from the roots of Lindera glauca and the alkaloids influence on proliferation of HT-29,SGC-7901,SMMC-7721 and A549 cell lines.
The constituents were isolated by column chromatography such as RP-18,Sephadex LH-20 and silica gel,and their structures were elucidated by
Simultaneous determination of four alkaloids in Lindera aggregata by ultra-high-pressure liquid chromatography-tandem mass spectrometry.
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A new separation and quantification method using liquid chromatography under ultra-high-pressure in combination with tandem mass spectrometry (MS/MS) was developed for simultaneous determination of four alkaloids in Lindera aggregata. The analysis was performed on an Acquity UPLC BEH C(18) column
[Simultaneous determination of four alkaloids in Lindera aggregate by high performance liquid chromatography].
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OBJECTIVE
To develop an HPLC method for simultaneous determination of four major alkaloids in Lindera aggregate.
METHODS
The analysis was carried out on an Agilent ZORBAX SB-C18 column (4.6 mm x 250 mm, 5 microm) with gradient elution using acetonitrile-water (containing 0. 15% diethylamine,
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