Journal
FITOTERAPIA
Volume 82, Issue 8, Pages 1181-1184Publisher
ELSEVIER
DOI: 10.1016/j.fitote.2011.08.004
Keywords
Pteris multifida; Pterosin dimer; Cyclobutane; Bimutipterosin A; Bimutipterosin B
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Funding
- National Natural Science Foundation of China [30960495]
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Two new C-14 pterosin dimers, which are a pair of isomers named as bimutipterosins A (1) and B (2), were isolated from the whole plant of Pteris multifida. Their structures have been elucidated on the basis of NMR and MS data. From a biogenetic point of view, these compounds including a cyclobutane basic core should be considered as a [2 + 2] dimerization product of dehydropterosin Q which was a known compound and also isolated from this plant. This novel type of pterosin dimer was reported here for the first time. Compounds 1 and 2 showed cytotoxicity against HL 60 cell line (human leukemia) with the IC50 values of 12.8 and 26.6 mu M, respectively. (C) 2011 Elsevier B.V. All rights reserved.
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