Cembrane-type diterpenoids are among the most frequently encountered natural products from the soft corals of the genus . In the course of our investigation to identify anti-inflammatory constituents from a wild-type soft coral , two new cembranoids, lobophyolide A () and B (), along with five known compounds (-), were isolated. The structures of these natural products were identified using NMR and MS spectroscopic analyses. Compound was found to possess the first identified -epoxylactone group among all cembrane-type diterpenoids. The in vitro anti-inflammatory effect of compounds 1- was evaluated. The results showed that compounds 1- not only reduced IL-12 release, but also attenuated NO production in LPS-activated dendritic cells. Our data indicated that the isolated series of cembrane-type diterpenoids demonstrated interesting structural features and anti-inflammatory activity which could be further developed into therapeutic entities.
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http://dx.doi.org/10.3390/md15100327 | DOI Listing |
Biofouling
January 2025
The United Graduate School of Agricultural Sciences, Kagoshima University, Kagoshima, Japan.
Acta Pharmacol Sin
January 2025
Shandong Laboratory of Yantai Drug Discovery, Bohai Rim Advanced Research Institute for Drug Discovery, Yantai, 264117, China.
A detailed chemical investigation of the Hainan soft coral Lobophytum crassum led to the identification of a class of polyoxygenated cembrane-type macrocyclic diterpenes (1-28), including three new flexible cembranoids, lobophycrasins E-G (2-4), and twenty-five known analogues. Their structures were elucidated by combining extensive spectroscopic data analysis, quantum mechanical-nuclear magnetic resonance (QM-NMR) methods, the modified Mosher's method, X-ray diffraction analysis, and comparison with data reported in the literature. Bioassays revealed that sixteen cembranoids inhibited the proliferation of H1975, MDA-MB231, A549, and H1299 cells.
View Article and Find Full Text PDFSci Rep
July 2024
Pharmaceutical Technology Department, National Research Centre, 33 El-Buhouth Street, Dokki, Giza, 12622, Egypt.
Boswellia carterii (BC) resins plants have a long historical background as a treatment for inflammation, as indicated by information originating from multiple countries. Twenty-seven diterpenoids have been identified in ethyl acetate and total methanol BC, comprising seventeen boscartins of the cembrane-type diterpenoids and ten boscartols of the prenylaromadendrane-type diterpenoids. Moreover, twenty-one known triterpenoids have also been found, encompassing nine tirucallane-type, six ursane-type, four oleanane-type, and two lupane-type.
View Article and Find Full Text PDFJ Med Chem
July 2024
State Key Laboratory of Chemical Biology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China.
Cembranolides are characteristic metabolites in marine soft corals, with complex structures and widespread biological activities. However, seldom has an intensive pharmacological study been done for these intriguing marine natural products. In this work, systematic chemical investigation was performed on by HSQC-based small molecule accurate recognition technology (SMART), resulting in the isolation and identification of 31 cembrane-type diterpenoids, including six new ones.
View Article and Find Full Text PDFFitoterapia
July 2024
School of Pharmacy, Jiangxi University of Chinese Medicine, Nanchang 330004, People's Republic of China. Electronic address:
Five new characteristic cembrane-type diterpenoids (olibacartiols A-E, 1-5) were acquired from the gum resin of Boswellia carterii. The structures of these diterpenoids were characterized by detailed spectroscopic analysis, and compounds 1-3 were unambiguously confirmed by single-crystal X-ray diffraction experiments. The anti-inflammatory activities of the isolated compounds were evaluated using LPS-induced BV2 cell model and compounds 2-5 showed moderate NO inhibitory effects with IC values of 8.
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