Abstract
Phytochemical investigation on the stems of Trigonostemonheterophyllus led to the isolation of a new lariciresinol-based lignan glycoside, trigonoheteran (1), together with a known lignan glycoside, aviculin (2). Their structures were elucidated by spectroscopic methods including 1D and 2D NMR (HMQC, 1H–1H COSY, HMBC, and NOESY).
Acknowledgments
This research was financially supported by Special Fund for Agro-scientific Research in the Public Interest (201303117), National Support Science and Technology Subject (2013BAI11B04), and Major Technology Project of Hainan Province (ZDZX2013008-4).