Biogenesis of rosmarinic acid in Mentha
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The biogenesis of rosmarinic acid (α-O-caffeoyl-3,4-dihydroxyphenyl-lactic acid), the second most common ester of caffeic acid in the plant kingdom, was studied in Mentha arvense and Mentha piperita. Administration of 14C-labelled compounds showed that, whereas the caffeoyl moiety was formed from phenylalanine via cinnamic acid and p-coumaric acid, the 3,4-dihydroxyphenyl-lactic acid moiety was formed from tyrosine and 3,4-dihydroxyphenylalanine. Time-course studies and the use of labelled rosmarinic acid showed that endogenous rosmarinic acid had a low turnover rate. The caffeoyl moiety did not appear to contribute to the formation of insoluble polymers, as has been suggested for chlorogenic acid in other plants.
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2021 ◽
Vol 20
(1)
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pp. 155-160
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1998 ◽
Vol 822
(1)
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pp. 167-171
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1959 ◽
Vol 37
(1)
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pp. 537-547
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2019 ◽
Vol 13
(1)
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pp. 344-350
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