A new picrotoxane-type sesquiterpene from Dendrobium nobile Lindl. 2022

Pei Wang, and Xin Chen, and Cai-Hong Cai, and Fan-Dong Kong, and Sheng-Zhuo Huang, and Jing-Zhe Yuan, and Xing-Lian Xu, and Wen-Li Mei, and Hao-Fu Dai
Hainan Key Laboratory of Research and Development of Natural Product from Li Folk Medicine, Hainan Institute for Tropical Agricultural Resources, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, PR China.

A picrotoxane-type sesquiterpene, dendroterpene E (1), together with five benzene derivatives (2-6), were isolated from the stems of Dendrobium nobile Lindl. Their structures were elucidated by spectroscopic analysis and X-ray diffraction analysis. Compound 1 was a new picrotoxane-type sesquiterpene with a C-9/C-1/O/C-11 oxetane ring, which was first encountered in this type of compounds. Compounds 1-3 exhibited inhibitory activities against α-glycosidase.

UI MeSH Term Description Entries
D012717 Sesquiterpenes Fifteen-carbon compounds formed from three isoprenoid units with general formula C15H24. Farnesanes,Farnesene,Farnesenes,Sesquiterpene,Sesquiterpene Derivatives,Sesquiterpenoid,Sesquiterpenoids,Derivatives, Sesquiterpene
D013057 Spectrum Analysis The measurement of the amplitude of the components of a complex waveform throughout the frequency range of the waveform. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed) Spectroscopy,Analysis, Spectrum,Spectrometry
D015394 Molecular Structure The location of the atoms, groups or ions relative to one another in a molecule, as well as the number, type and location of covalent bonds. Structure, Molecular,Molecular Structures,Structures, Molecular
D031667 Dendrobium A plant genus of the family ORCHIDACEAE that contains dihydroayapin (COUMARINS) and phenanthraquinones. Dendrobiums

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