Antimicrobial, cytotoxic lignans and terpenoids from the twigs of Pseudolarix kaempferi.

  title={Antimicrobial, cytotoxic lignans and terpenoids from the twigs of Pseudolarix kaempferi.},
  author={W. He and Hong-biao Chu and Yu-mei Zhang and Hongjin Han and He Yan and G. Zeng and Z. Fu and O. Olubanke and N. Tan},
  journal={Planta medica},
  volume={77 17},
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, pseudolarkaemin C (6), and a triterpene, 25-epi-pseudolarolide Q (7), along with 25 known compounds (8–32) were isolated from the twigs of Pseudolarix kaempferi. Their structures were elucidated mainly… Expand
Five New Secondary Metabolites Produced by a Marine-Associated Fungus, Daldinia eschscholzii
Five new compounds, including a benzopyran ribonic glycoside, daldiniside A (1), two isocoumarin ribonic glycosides, daldinisides B (2) and C (3), and two alkaloids,Expand
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Approximately 17 compounds were isolated from a 60% EtOH aqueous extract of the roots and rhizomes of Clematis hexapetala Pall., including three new guaianolide sesquiterpenoids with 5/7/5-fusedExpand
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Four new phenylpropanoid derivatives (1-4), together with eleven known analogues (5-15) were isolated and identified by comparison with their references and extensive spectroscopic methods fromExpand
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Two new amides, claulansamides A and B (1 and 2, resp.), together with five known amides, 3-7 and six known quinolones, 8-13, were isolated from the stems and roots of Clausena lansium. TheirExpand
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Biological activity test results indicated that the 90% acetone extract of the branches and leaves of Sabina gaussenii showed cytotoxicity against the human lung adenocarcinoma cell line and eighteen known compounds, including two new cinnamyl isovalerate derivatives and eighteenknown compounds. Expand
New triterpenoids and PTP1B inhibitory constituents of Pseudolarix amabilis.
Six new triterpenoids, pseudolarins A-F (1-6), were isolated from the twigs of Pseudolarix amabilis and showed inhibition against protein tyrosine phosphatase 1B (PTP1B) in vitro. Expand
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Abstract Diastereomers are a type of a stereoisomer and they are often isolated as a mixture due to their similar physical properties. Through HPLC technique, we isolated four stereoisomeric lignanExpand
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Pseudolarolides O and P, Two Novel Triterpene Dilactones from Pseudolarix kaempferi
Pseudolarolides O (1) and P (2), two novel triterpenoids with a cycloartane-type framework, were isolated from the seeds of Pseudolarix kaempferi Gord. (Pinaceae). Their structures were elucidated asExpand
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Compound 7 is a new compound, while compounds 8 and 9 were isolated from this plant for the first time. Expand
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Attempts were made to introduce an alcoholic hydroxyl group stereospecifically at the C-5 or C-6 position of 2, 3-dibenzylbutyrolactone lignans with lead tetraacetate and osmic acid as oxidizingExpand
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Abstract 2-O-[4′-(α- Hydroxypropyl )-2′- methoxyphenyl ]-1-O-β- d - xylopyranosyl glycerol and 3′-O-methylcatechin, in addition to 24 known phenolic compounds, have been isolated from inner bark ofExpand
Cytotoxic constituents from Wikstroemia elliptica
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