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[Chemical constituents in the stem of Premna crassa Hand. -Mazz]
1Department of Pharmacy, Guangxi College of Traditional Chinese Medicine, Nanning.
Abstract:
In this paper four compounds isolated from the stem of Premna crassa are described. Their structures have been identified as friedelin, epifriedelanol, stearic acid and beta-sitosterol respectively by comparing their chemical and spectroscopic data with those of the authentic samples.