Antisweet natural products. XV. Structures of Jegosaponins A-D from Styrax japonica Sieb. et Zucc.
From the fresh fruits of Strrax japonica Sieb. et Zucc., four new triterpenoid glycosides, named jegosaponins A-D (1-4), were isolated. Their structures were determined on the basis of spectroscopic data and chemical evidence. Compounds 1-4 are 3-O-tetraglycosides of barringtogenol C having an acetyl and a tigloyl or a (2Z)-hexenoyl groups at C-21, 22 and 28. The acylated saponins, 1-4, all showed antisweet activity.
Faculty, of Pharmaceutical Sciences, Tokushima Bunri University, Japan. yosikawa@ph.bunri-u.ac.jp
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D002240:Carbohydrate Sequence; D019684:Magnoliopsida / Q000737:chemistry*; D008969:Molecular Sequence Data; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*
D012503:Saponins