A new neolignan, named simplidin was isolated from the the n-butanol extract of stem of Firmiana simplex, together with six known compounds, scopoletin (1), syrigaresinol (2), aquillochin (3), nitidanin (4), tamarixetin 3-rhamnoside (6), and quercitrin (7). On the basis of spectral and chemical evidence, simplidin (5) was determined to be rel-(7R,8R)-4,5,9,9'-tetrahydroxy-3,3'-dimethoxy-7-O-5',8-O-4'-neolignan. All the six compounds were also isolated for the first time from this plant.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1007/BF02975132 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Maximizing Degumming Efficiency for Bark Using Deep Eutectic Solvents.
Polymers (Basel)
July 2024
School of Art and Design, National Textile University Faisalabad, Faisalabad 37610, Pakistan.
Degumming is a critical process in the purification of natural fibers, essential for enhancing their quality and usability across various applications. Traditional degumming methods employed for natural fibers encounter inherent limitations, encompassing prolonged procedures, excessive energy consumption, adverse environmental impact, and subpar efficiency. To address these challenges, a groundbreaking wave of degumming technique has emerged, transcending these constraints and heralding a new era of efficiency, sustainability, and eco-friendly techniques.
View Article and Find Full Text PDFExploring the versatility of biodegradable biomass aerogels: In-depth evaluation of Firmiana simplex bark microfibers depolymerized by deep eutectic solvent.
Int J Biol Macromol
August 2024
School of Textile and Clothing, Qingdao University, Qingdao, China.
Article Synopsis
- * The produced FSB microfibers maintained their cellulose structure and high crystallinity, confirmed by advanced imaging and X-ray diffraction techniques, demonstrating the process's effectiveness.
- * The extracted microfibers were transformed into aerogels through freeze-drying, which showed excellent air filtration capabilities, outperforming conventional masks in efficiency and degradation properties.
Characterization of Firmiana danxiaensis plastomes and comparative analysis of Firmiana: insight into its phylogeny and evolution.
BMC Genomics
February 2024
Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China.
Article Synopsis
- Firmiana danxiaensis is a critically endangered tree found in specific habitats in northern Guangdong, China, making it a key species for studying adaptive evolution.
- Researchers sequenced the complete chloroplast genomes of F. danxiaensis from four locations, revealing a similar structure and gene composition across samples, but with notable differences in codon preferences depending on the habitat type.
- The study identified genes under positive selection linked to adaptation and provided new insights into the species’ phylogenetic relationships, which could enhance our understanding of its conservation and population genetics.
Temperature sensitivity of leaf flushing in 12 common woody species in eastern China.
Sci Total Environ
February 2023
School of Ecology and Nature Conservation, Beijing Forestry University, Beijing 100083, China.
Leaf phenology is one of the most reliable indicators of global warming in temperate regions because it is highly sensitive to temperatures. Temperature sensitivity (S) is defined as the values of changed days of leaf flushing date (LUD) per degree increase in temperatures. Climate warming substantially advanced LUD in the temperate region, but its effect on S of LUD is still not clear.
View Article and Find Full Text PDFThe complete chloroplast genome of two Firmiana species and comparative analysis with other related species.
Genetica
December 2022
Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, Guilin, Guangxi, China.
Firmiana is a small genus within the subfamily Sterculioideae of the Malvaceae. There are nine Firmiana species distributed in South and South-west China, most of which are endangered. Due to the shortage of plastid genomes data, the phylogenetic relationships and the evolutionary history of this genus remain unclear.
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!