Isoselagintamarlin A (1), a selaginellin analogue featured a rare benzofuran unit, was isolated from Selaginella tamariscina. Its complete structural assignment was established through a combination of high-field NMR technique and biomimetic synthesis. Notably, isoselagintamarlin A (1) was successfully synthesized via sequential oxidations and intramolecular cyclization.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6328423 | PMC |
| http://dx.doi.org/10.1007/s13659-018-0195-5 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Quantifying the Chirality of Vibrational Modes in Helical Molecular Chains.
Phys Rev Lett
December 2024
Tel Aviv University, University of Pennsylvania, Department of Chemistry, Philadelphia, Pennsylvania 19104, USA and School of Chemistry, Tel Aviv 69978, Israel.
Chiral phonons have been proposed to be involved in various physical phenomena, yet the chirality of molecular normal modes has not been well defined mathematically. Here we examine two approaches for assigning and quantifying the chirality of molecular normal modes in double-helical molecular wires with various levels of twist. First, associating with each normal mode a structure obtained by imposing the corresponding motion on a common origin, we apply the continuous chirality measure (CCM) to quantitatively assess the relationship between the chirality-weighted normal mode spectrum and the chirality of the underlying molecular structure.
View Article and Find Full Text PDFAlexithymia in people with tattoos.
Postepy Dermatol Alergol
December 2024
Department of Dermatology, Venereology and Allergology, Wroclaw Medical University, Wroclaw, Poland.
Introduction: Tattoos are a form of body modifications. Alexithymia is a complex personality structure that includes emotional and cognitive deficits such as difficulty in recognizing and describing feelings.
Aim: To assess the prevalence of alexithymia among tattooed individuals.
Unveiling the Etiopathogenic Role of Epstein-Barr Virus in Periodontitis.
J Dent Res
January 2025
MICORALIS, Faculté de Chirurgie Dentaire, Université Côte d'Azur, Nice, France.
Periodontitis, a prevalent and costly oral disease, remains incompletely understood in its etiopathogenesis. The conventional model attributes it to pathogenic bacteria, but emerging evidence suggests dysbiosis involving bacteria, herpesviruses, and an exaggerated host immune response. Among herpesviruses, Epstein-Barr virus (EBV) closely links to severe periodontitis, yet the mechanisms underlying EBV-related pathogenesis remain elusive.
View Article and Find Full Text PDFCombining Multifrequency Magnetic Resonance Elastography With Automatic Segmentation to Assess Renal Function in Patients With Chronic Kidney Disease.
J Magn Reson Imaging
January 2025
Department of Radiology, The Fourth Clinical Medical College of Guangzhou University of Chinese Medicine (Shenzhen Traditional Chinese Medicine Hospital), Shenzhen, China.
Background: Multifrequency MR elastography (mMRE) enables noninvasive quantification of renal stiffness in patients with chronic kidney disease (CKD). Manual segmentation of the kidneys on mMRE is time-consuming and prone to increased interobserver variability.
Purpose: To evaluate the performance of mMRE combined with automatic segmentation in assessing CKD severity.
Copper-Mediated Three-Component Synthesis of Diverse Perfluoroalkylated Fullerenes.
J Org Chem
January 2025
Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China.
The synthesis of perfluoroalkylated fullerenes (PFAFs) holds significant importance due to their enhanced molecular stability, increased lipophilicity, and high electron affinity. Herein, we report a copper-catalyzed multicomponent reaction conducted under aerobic conditions, which enables the production of highly soluble PFAFs with half-wave reduction potentials similar to those of C. Furthermore, the challenges posed by C-F coupling in carbon signal assignment were addressed through fluorine-decoupled carbon spectroscopy, facilitating precise structural characterization of the perfluoroalkyl moieties.
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!