期刊
FITOTERAPIA
卷 131, 期 -, 页码 141-145出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.fitote.2018.10.010
关键词
Syzygium austroyunnanense; Myrtaceae; Phloroglucinol derivatives; Structure elucidation; PTP 1B inhibitory activities
资金
- National Natural Science Foundation of China [31560098]
- Mid-aged and Young Academic and Technical Leader Raising Foundation of Yunnan Province, China [2010CI040]
Five new phloroglucinol derivatives (1-5) together with one known analogue (6) were isolated from the leaves of Syzygiwn austroyunnanense which is an edible folk medicine used for the treatment of diabetes. The new structures were elucidated as austroyunones A - E (1-5) by means of the extensive spectroscopic analyses including high-resolution electrospray ionization mass spectrometry (HRESIMS) and ID and 2D nuclear magnetic resonance (NMR). Compounds 4-6 showed obvious protein tyrosine phosphatase 1B (PTP1B) inhibitory activity. This discovery of new phloroglucinols and their bioactivities provided a scientific basis for the application of S. austroyunnanense as an edible and medicinal plant.
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