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pseudolarix/càncer
L'enllaç es desa al porta-retalls
9 resultats
Pseudolaridimers A and B, hetero-cycloartane-labdane Diels-Alder adducts from the cone of Pseudolarix amabilis.
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Pseudolaridimers A (1) and B (2), two unprecedented heterodimers formed via a [4 + 2] Diels-Alder cycloaddition between a cycloartane triterpenoid unit and a labdane diterpenoid unit, were isolated from the cones of Pseudolarix amabilis. Their structures were established by extensive analysis of
Two novel cytotoxic and antimicrobial triterpenoids from Pseudolarix kaempferi.
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Two novel antimicrobial and cytotoxic triterpenoids, isopseudolarifuroic acids A (1) and B (2), were isolated from the bark of Pseudolarix kaempferi. The structural elucidation of two novel compounds was carried out mainly by spectroscopic methods, and also by computer modeling. Compounds 1 and 2
Cytotoxic diterpenoids from the bark of Pseudolarix kaempferi and their structure-activity relationships.
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Four new diterpenoids, 11S-deacetylpseudolaric acid A (2), deacetylpseudolaric acid A O-beta-d-glucopyranoside (3), deacetylpseudolaric acid A 2,3-dihydroxypropyl ester (4), and deacetylpseudolaric acid B 2,3-dihydroxypropyl ester (5), and nine known diterpenoids were isolated from the bark of
The cytotoxic principles of Pseudolarix kaempferi: pseudolaric acid-A and -B and related derivatives.
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Pseudolaric acid-A and -B, the novel diterpene acids isolated from Pseudolarix kaempferi, and their related derivatives have been tested for cytotoxicity against KB, A-549, HCT-8, P-388, and L-1210 tumor cells. The results showed that pseudolaric acid-A and -B demonstrated potent cytotoxicity. The
Antimicrobial, cytotoxic lignans and terpenoids from the twigs of Pseudolarix kaempferi.
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Seven new compounds, including four lignans, (+)-(8S,8′S)-9,9′-dibenzoylsecoisolariciresinol (1), (+)-(8S*,8′R*)-4,4′-dimethyloxomatairesinol (2), (+)-(7S*,8R*,8′R*,9′S*)-9′-n-butoxytsugacetal (3), and pseudolarkaemin A (4), a pyronane glycoside, pseudolarkaemin B (5), an ent-beyerene glycoside,
The isolation and structural elucidation of four novel triterpene lactones, pseudolarolides A, B, C, and D, from Pseudolarix kaempferi.
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Four novel triterpene lactones, pseudolarolides A [1], B [2], C [3], and D [4], were isolated from the seeds of Pseudolarix kaempferi. Their structures and stereochemistry were elucidated from spectral data. Compound 2 shows potent cytotoxicity against three human cancer cell lines, KB
Pseudolarix acid B, a new tubulin-binding agent, inhibits angiogenesis by interacting with a novel binding site on tubulin.
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Tubulin-binding agents have received considerable interest as potential tumor-selective angiogenesis-targeting drugs. Herein, we report that pseudolarix acid B (PAB), isolated from the traditional Chinese medicinal plant Pseudolarix kaempferi Gordon, is a tubulin-binding agent. We further
Development and validation of LC-MS/MS method for quantification of pseudolaric acid B from the root bark of Pseudolarix kaempferi in rat plasma: application to a pharmacokinetic study.
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Pseudolaric acid B (PAB), which is the main biologically active diterpene acid of Pseudolarix kaempferi, has presented anti-fungal, anti-tumor, anti-fertility, and anti-tubulin activities. In this study, a sensitive and selective liquid chromatography tandem mass spectrometry (LC-MS/MS) method with
Angiogenesis inhibition and cell cycle arrest induced by treatment with Pseudolarix acid B alone or combined with 5-fluorouracil.
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Angiogenesis inhibitors combined with chemotherapeutic drugs have significant efficacy in the treatment of a variety of cancers. Pseudolarix acid B (PAB) is a traditional pregnancy-terminating agent, which has previously been shown to reduce tumor growth and angiogenesis. In this study, we used the
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