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从雷公藤乙醇提取物中分得五个化合物，经光谱解析及相关化合物光谱对照确定其化学结构。其中化合物（１）鉴定为一新化合物，命名为３β，２２α，３０－三羟基－乌索－１２－烯。
Five compounds were extracted from the ethanol extract of Tripterygium wilfordii and their chemical structures were determined by spectral analysis and spectral comparison of related compounds. Among them, Compound (1) was identified as a new compound and named as 3β,22α,30-trihydroxy-urso-12-ene.