Chemical investigation of the dichloromethane extracts of Hoya multifloraBlume led to the isolation of lupeol (1a), α-amyrin (1b), β-amyrin (1c), lupeol acetate (2a), α-amyrin acetate (2b), and β-amyrin acetate (2c) from the stems; and 1b, bauerenol (3), squalene (4), lutein (5), β-sitosterol (6a), and stigmasterol (6b)from the leaves.The structures of 1-6 were identified by comparison of their 1 H and/or 13 C NMR data with those reported in the literature.
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Shen et al. (2015) studied this question.
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