Phytochemistry 2017-Nov
Prenylated purine alkaloids from seeds of Gleditsia japonica.
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Three previously undescribed isoguanine glycosides with an N3-prenyl group, designated locustoside B, saikachinoside B, and saikachinoside C, have been isolated from the seed of Gleditsia japonica Miquel (Fabaceae) along with two known compounds, locustoside A and saikachinoside A. Their structures were determined from spectroscopic data and X-ray crystallographic analysis. The inhibitory activity against acid phosphatase was evaluated.