Abstract
Three pyranoquinolone alkaloids isolated from two East African Fagara plants have been found to exhibit SRS-A antagonist action. Their synthesis has been accomplished, using a modified Coppola's method or a thermal cyclization followed by an electrocyclic ring closure.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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4-Quinolones
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Africa, Eastern
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Alkaloids / chemistry*
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Anti-Infective Agents / chemistry*
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Chromatography, Thin Layer
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Plant Extracts / chemistry*
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SRS-A / antagonists & inhibitors*
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Spectrophotometry, Infrared
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Trees / chemistry*
Substances
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4-Quinolones
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Alkaloids
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Anti-Infective Agents
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Plant Extracts
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SRS-A