Abstract
We studied the structure-activity relationships of lignans from Schisandra chinensis and their derivatives as platelet activating factor (PAF) antagonists. Strong activity was shown in lignans without an ester group at C-6, a hydroxyl group at C-7 or a methylene dioxy moiety and with an R-biphenyl configuration. 6(7)-Dehydroschisandrol A, a derivative of schisandrol A, showed the highest activity (IC50, 2.1x10(-6) M) in this study.
MeSH terms
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Biphenyl Compounds / chemistry
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Cyclooctanes*
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Esterification
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Hydroxylation
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Lignans / chemistry*
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Lignans / pharmacology
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Plants, Medicinal / chemistry*
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Platelet Activating Factor / antagonists & inhibitors*
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Polycyclic Compounds / chemistry*
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Polycyclic Compounds / pharmacology
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Structure-Activity Relationship
Substances
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Biphenyl Compounds
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Cyclooctanes
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Lignans
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Platelet Activating Factor
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Polycyclic Compounds
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schizandrin B
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schizandrin