Three new compounds, goldfussins A (1) and B (2) and goldfussinol (3), and sixteen known compounds were isolated from the ethanolic extract of the whole plants of Goldfussia psilostachys. The structures of the new compounds were elucidated as a novel cadinane sesquiterpene, 1,8-dimethyl-5-hydroxymethyl-9-oxo-6,7,8,9-tetrahydronaphtho[2,1- b]furan (1), a novel norcadinane sesquiterpene, 4-acetyl-3-hydroxy-1-hydroxymethyl-6-methyl-5-oxo-5,6,7,8-tetrahydronaphthalene (2) and methyl 3-hydroxy-2-(3,5-dimethoxy-4-hydroxyphenyl)-propanoate (3) on the basis of spectral data.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1055/s-2005-873125 | DOI Listing |
J Agric Food Chem
June 2024
School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou 450046, P. R. China.
The fruit of Miq is an important food spice in southern China and has been used in the treatment of kidney disorders for centuries. In order to discover the natural products with potent renoprotective activities in and provide some references for its usage, systematic phytochemical studies were carried out and 24 new diverse sesquiterpenoids, including seven guaiane sesquiterpenoids (-), 10 eudesmane sesquiterpenoids (-, , , and -), six cadinane sesquiterpenoids (- and ), and an eremophilane sesquiterpenoid (), along with 24 known analogues were isolated and elucidated by analysis of spectroscopic data and quantum-chemical calculations. Biological evaluation showed that 6 sesquiterpenoids could significantly inhibit the expression of extracellular matrix components, α-SMA in TGF-β1 induced kidney proximal tubular cells (NRK-52e) at low concentrations, and 9 sesquiterpenoids could also downregulate fibronectin and collagen I in a concentration-dependent manner, showing their potential in renal fibrosis.
View Article and Find Full Text PDFJ Agric Food Chem
February 2024
Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Key Laboratory for Research and Development of Tropical Herbs, School of Pharmacy, Hainan Medical University, Haikou 571199, China.
Ten new cadinane-type sesquiterpenoids, named hibisceusins I-R (-), along with 14 known sesquiterpenoids (-), were acquired from the tainted stems of . Their structures were identified via spectroscopic analysis, one-dimensional (1D) and two-dimensional (2D) NMR, and computer-assisted structure elucidation techniques, including infrared (IR) and mass spectrometry (MS) data. Additionally, subsequent DP4/DP4+ probability methods were used to resolve 's relative configurations by comparing their experimental values to the predicted NMR data.
View Article and Find Full Text PDFChem Sci
January 2024
State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Yunnan Key Laboratory of Natural Medicinal Chemistry Kunming 650201 China
[4 + 2] cycloaddition has led to diverse polycyclic chiral architectures, serving as novel sources for organic synthesis and biological exploration. Here, an unprecedented class of cadinane sesquiterpene [4 + 2] dimers, henryinins A-E (1-5), with a unique 6/6/6/6/6-fused pentacyclic system, were isolated from . The divergent total syntheses of compounds 1-5 and their enantiomers (6-10) were concisely accomplished in eight linear steps using a protection-free approach.
View Article and Find Full Text PDFBioorg Chem
October 2022
Henan University of Chinese Medicine, Zhengzhou, Henan 450046, PR China; Engineering Technology Research Center for Comprehensive Development and Utilization of Authentic Medicinal Materials in Henan Province, Zhengzhou, Henan 450046, PR China. Electronic address:
Nine new cadinane-type sesquiterpenoids (1-9) and three new eucalyptane -type sesquiterpenes (10-12) were isolated from the ethyl acetate extract of Burdock leaves, which were commonly used for preventing or treating atherosclerosis in China. Their structures were confirmed by extensive spectroscopic analysis, single-crystal X-ray diffraction analysis and ECD calculations. Compound 1 possessed the rare large conjugated skeleton.
View Article and Find Full Text PDFJ Nat Prod
January 2022
Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences & Peking Union Medical College, Haidian District, Beijing 100193, People's Republic of China.
Eight new cadinane sesquiterpenoids (-), along with two known compounds ( and ), were isolated from infected stems of the semi-mangrove plant, . The structures of compounds - were elucidated through the analysis of their 1D and 2D NMR and MS data, and their absolute configurations were determined by comparing their experimental and calculated ECD spectra and by single-crystal X-ray diffraction. The two confused known compounds ( and ) were resolved using single-crystal X-ray crystallography.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!