The chemical investigation of a leaf extract from a herbarium specimen of collected in Banyang Mbo Wildlife Sanctuary, Southwest Region, Cameroon, yielded five undescribed abietane diterpenoids, banyangmbolides A-E, (-), and four known diterpenoids, gelomulides A (), B (), D () and O (). The structures of the isolated compounds were determined using NMR, IR, ECD and HRESIMS. Compounds , and , showed 48-55% inhibition at 200 μM against FM-55-M1 human melanoma cells.
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http://dx.doi.org/10.1016/j.heliyon.2024.e25917 | DOI Listing |
Fitoterapia
January 2025
School of Biological Sciences and Technology, University of Jinan, Jinan 250022, China; Shandong Engineering Research Center of Key Technologies for High-Value and High-Efficiency Full Industry Chain of Lonicera japonica, Linyi 273399, China. Electronic address:
Two undescribed oxazole-containing diterpenoids (1-2) and a new diterpenoid (3) were isolated from the roots of Salvia miltiorrhiza. Their structures were elucidated by extensive HRESIMS and NMR spectroscopic analysis, and the absolute configurations of 1 and 3 were confirmed by comparison of the calculated and experimental electronic circular dichroism (ECD) spectra. Compound 1 represents the first example of an abietane diterpenoid with a benzo[d]oxazole unit fused in the ring B of the abietane skeleton.
View Article and Find Full Text PDFMedicine (Baltimore)
November 2024
Department of Orthopaedics, The First Affiliated Hospital of Zhejiang Chinese Medical University (Zhejiang Provincial Hospital of Chinese Medicine), Hangzhou, Zhejiang, China.
Transcription factors play a crucial role in the biosynthesis of tanshinones, which are significant secondary metabolites derived from Salvia miltiorrhiza, commonly known as Danshen. These compounds have extensive pharmacological properties, including anti-inflammatory and cardioprotective effects. This review delves into the roles of various transcription factor families, such as APETALA2/ethylene response factor, basic helix-loop-helix, myeloblastosis, basic leucine zipper, and WRKY domain-binding protein, in regulating the biosynthetic pathways of tanshinones.
View Article and Find Full Text PDFZhongguo Zhong Yao Za Zhi
December 2024
School of Medicine, Jianghan University Wuhan 430056, China.
This study aims to investigate the mechanism of tanshinone Ⅱ_A(Tan Ⅱ_A) in protecting mice from diethylinitrosamine(DEN)/carbon tetrachloride(CCl_4)/ethanol(C_2H_5OH)-induced hepatocellular carcinoma(HCC) and HepG2 cells from hydrogen peroxide(H_2O_2)-induced oxidative damage via the phosphoinositide 3-kinase(PI3K)/protein kinase B(Akt) and nuclear factor E2-related factor 2(Nrf2)/heme oxygenase 1(HO-1) signaling pathways. Sixty male C57BL/6J mice were grouped as follows: control, model, low, medium, and high-dose(10, 20, 40 mg·kg~(-1), respectively) Tan Ⅱ_A, and colchicine(0.2 mg·kg~(-1)), with 10 mice in each group.
View Article and Find Full Text PDFArch Pharm (Weinheim)
January 2025
N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry, Siberian Branch Russian Academy of Sciences, Novosibirsk, Russian Federation.
Tyrosyl DNA phosphodiesterases 1 and 2 (TDP1 and TDP2), which are enzymes involved in the repair of DNA, are regarded as promising targets for the development of new anticancer drugs. In this study, a series of imidazolidine-2,4-diones, 2,4,5-triones, and 2-thioxoimidazolidine-4,5-diones based on dehydroabietylamine (DHAAm) were synthesized. The inhibitory activity of the new compounds against TDP1 and TDP2, as well as their cytotoxic characteristics, were evaluated.
View Article and Find Full Text PDFInt J Mol Sci
December 2024
Laboratory of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Coimbra, 3000-548 Coimbra, Portugal.
A series of novel carnosic acid derivatives incorporating urea moieties at the C-20 position was synthesized and evaluated for their antiproliferative activity against the HCT116 colorectal cancer cell line. Most derivatives demonstrated enhanced antiproliferative activity compared to that of carnosic acid . The most promising derivatives were tested in other colorectal cancer cell lines (SW480, SW620, and Caco-2), melanoma (A375), and pancreatic cancer (MiaPaca-2).
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