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Investigation of the rhizomes of Polygonatum sibiricum led to the isolation of the previously reported neoprazerigenin A 3-O-beta-lycotetraoside 3, its methyl proto-type congener 2, and two new steroidal saponins, sibiricosides A 1 and B 4. The structures have been determined by spectral means and by comparison with literature data and authentic samples.
Son et al. (Thu,) studied this question.