Journal
ORGANIC LETTERS
Volume 12, Issue 4, Pages 656-659Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ol9024869
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Three novel sesquiterpenoid-based meroterpenoids of psidials A-C (1-3) have been isolated from the leaves of Psidium guajava L. Their complete structures were elucidated by spectral and chemical methods, and that of 1 was confirmed by single-crystal X-ray diffraction analysis. Psidial B (2) and C (3) represented the new skeleton of the 3,5-diformylbenzyl phloroglucinol-coupled sesquiterpenoid. A possible biosynthetic pathway for 2-3 was postulated. 2-3 showed activity to enzyme PTP1B in 10 mu M.
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