Abstract
The structure of Crystals E, F, and G were determined as methyl (p-methylcarbamoyloxy) cinnamate, methyl (p-methylcarbamoyloxy) hydrocinnamate, and methyl p-methoxy-cinnamate, respectively. Crystals E and F were confirmed to be the artifacts resulting from the methylation with diazomethane-ether. p-Hydroxycinnamic acid was proved to be a plant-growth retardant existing in Moyashi (etiolated seedlings of a bean, Phaseolus mungo). Several growth retardants were synthesized.
