Lunularia cruciata Lunularic acid

Incorporation experiments proved that lunularin (595) and lunularic acid (598) were biosynthesized by the shikimate-malonate pathway 288, 290). The co-occurrence of (595) and (598), and the presence of a lunularic acid decarboxylase in Lunularia cruciata and Conocephalum conicum indicated that a decarboxylation step was involved in forming naturally occurring C-14 stilbenes and their dihydro products 290, 292). 

It is known that dormancy of Lunularia cruciata is controlled by the endogenous substance, lunularic acid (598) (335, 336). Vitrenal (232), a spirosesquiterpene aldehyde, inhibited the growth of root and leaves of rice seedings at 25 ppm (250). 

Metabolism of Lunularic Acid to a New Plant Stilbene by Lunularia cruciata. Phytochem. 11, 1355 (1972). 

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