A new phenanthropyran, dioscorone B (), and a new phenanthrene (), together with seven known compounds (-), were isolated from the 75% ethanol extract of rhizomes. The chemical structures of these compounds were elucidated by comprehensive spectroscopic methods including NMR, HRESIMS, IR, and UV spectra. Compounds were first isolated from genus . The proton and carbon chemical shifts of compounds - were unambiguously assigned based on the 1D-NMR and 2D-NMR data. Compounds - and - were first tested for their antioxidant activities. Compounds and showed excellent activities with IC values of 0.07 ± 0.10 μM and 0.13 ± 0.09 μM, respectively.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1080/14786419.2019.1585844 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Zinc-lysine and iron-lysine mitigate chromium toxicity in pearl millet (Pennisetum glaucum) through modulating photosynthetic and antioxidant system and inhibiting chromium uptake and translocation.
Environ Sci Pollut Res Int
December 2024
Department of Agronomy, Faculty of Agricultural Sciences, SGT University, Gurugram, India.
Chromium (Cr) is an ever-present abiotic stress that negatively affects crop cultivation and production worldwide. High rhizospheric Cr concentrations inhibit nutrients uptake and their translocation to aboveground parts, thus can affect the growth and development of crop plants. This experiment was designed to evaluate the effects of sole and combined zinc-lysine and iron-lysine applications on photosynthetic efficacy, antioxidative defense, oxidative stress, and nutrient uptake and translocation under Cr stress.
View Article and Find Full Text PDFA systematic review on ethnobotany, phytochemistry, and pharmacology of R. Br. (Boraginaceae), a medicinal plant.
Nat Prod Res
December 2024
Laboratory of Advanced Materials Chemistry, Institute for Advanced Study in Technology, Ton Duc Thang University, Ho Chi Minh City, Vietnam.
For the first time, critical review on R. Br. (Boraginaceae) is established.
View Article and Find Full Text PDFSynthesis and molecular docking analysis of novel hydrazone and thiosemicarbazide derivatives incorporating a pyrimidine ring: exploring neuroprotective activity.
J Biomol Struct Dyn
December 2024
Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Biruni University, Istanbul, Türkiye.
The increasing global prevalence of Alzheimer's disease necessitates the development of novel therapeutic approaches. Neurodegenerative diseases are associated with increased oxidative stress and levels of cholinesterase enzymes. Hence, the development of cholinesterase inhibitors and antioxidants may provide neuroprotective effects.
View Article and Find Full Text PDFAba-induced active stomatal closure in bulb scales of Lanzhou lily.
Plant Signal Behav
December 2025
State Key Laboratory of Herbage Improvement and Grassland Agro-Ecosystems, College of Ecology, Lanzhou University, Lanzhou, Gansu, China.
Abscisic acid (ABA) mediated stomatal closure is a highly effective mode of active stomatal regulation under drought stress. Previous studies on stomatal regulation have primarily focused on the leaves of vascular plants, while research on the stomatal behavior of bulbous plants remains unknown. In addition, ABA-induced stomatal regulation in bulbs has yet to be explored.
View Article and Find Full Text PDF<i>Ormocarpum trichocarpum</i> (Taub.) Engl. is a shrub or small tree harvested from the wild as a source of food, traditional medicines and wood.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!