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Abstract
Three new lupane-type triterpenes, 3α-O-trans-feruloylbetulinic acid (1), 3α-O-trans-coumaroylbetulinic acid (2) and 3β-O-cis-feruloylbetulin (3), together with 10 known triterpenes (4–13), were isolated from the aerial parts of the mangrove plant Ceriops tagal. The structures of the three new compounds were established by means of spectroscopic data analyses and chemical methods.
Acknowledgements
This work was financially supported by the Chinese National Science & Technology Major Project ‘Key New Drug Creation and Manufacturing Program’ (Grants 2009ZX09301-001, 2009ZX09102-022), the Chinese National High-Tech R&D Program (Grants 2007AA02Z147), the National Natural Science Foundation of China (Grants 90713046, 30772638, 30925040), and CAS Foundation (Grants KSCX2-YW-R-179).
Notes
†The authors contributed equally to this work.