Phenols and coumarins of tomato plants

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Abstract
Vanillic and salicylic acids, and the coumarins marmesin, herniarin, esculetin, and bergapten were identified as constituents of whole tomato plants by paper and thin-layer chromatography and ultraviolet spectroscopy in the presence of diagnostic reagents. Strong evidence for the occurrence of p-hydroxybenzoic, syringic, ferulic, and p-hydroxycinnamic acids was obtained on the basis of chromatographic data and chromogenic reactions. Only the last two compounds and salicylic acid had been reported to occur in tomato plants. Biosynthetic implications of the occurrence of these phenolics are considered.

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