Two bitter biphenyl glucosides from Swertia japonica.
From the whole plants of Swertia japonica Makino a mixture of two new bitter biphenyl glucosides biphenosides A and B, was isolated along with three known secoiridoid glucosides by the application of droplet countercurrent chromatography (DCCC). The structure of the biphenyl glucoside was established by chemical degradation and spectroscopic methods.
Ikeshiro
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Y
Department of Pharmacognosy and Phytochemistry, Niigata College of Pharmacy, Niigata, Japan.
Kubota
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T
Tomita
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Y