Plant polyphenols. 2. The coumarins of Solanum pinnatisectum

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Abstract
Three coumarins, aesculin, cichoriin and scopolin, have been found in the flowers of Solanum pinnatisectum. The other major polyphenols present are chlorogenic acid, rutin and isoquercitrin. The coumarins also occur in 2 other closely related species of the tuberous Solanum plants. Their co-occurrence suggests that they are synthesized in the plant from aesculetin.