Abstract
Six new ursane-type triterpenes with a phenylpropanoid unit and five known oleanane-type triterpenes were isolated from the leaves of Camellia ptilosperma. The undescribed compounds were identified by analysis of 1D and 2D NMR and HRESIMS spectroscopic data as ptilospermanols A-F. The cytotoxicity of new compounds against six human cancer cell lines and three mouse tumor cell lines was evaluated by MTT assay.
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