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J Asian Nat Prod Res. 2012;14(8):743-7. doi: 10.1080/10286020.2012.688956. Epub 2012 Jun 14.

Two new tocopherol polymers from the seeds of Euryale ferox.

Author information

1
State Key Laboratory of Natural Medicines, Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing 210009, China.

Abstract

Two new tocopherol polymers, chroman-type dimer named ferotocodimer A (1) and spiro-type trimer named ferotocotrimer E (2), were isolated from the seeds of Euryale ferox. Their structures were elucidated on the basis of spectroscopic methods including HR-ESI-MS and 1D and 2D NMR. The absolute configurations of 1 and 2 were determined by CD and ROESY experiments.

PMID:
22694777
DOI:
10.1080/10286020.2012.688956
[Indexed for MEDLINE]

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