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Neutral 4π-electron tetrasilacyclobutadiene contains unusual features of a Möbius-type aromatic ring.
Commun Chem
December 2024
Anorganische Chemie, Universität Göttingen, Göttingen, Germany.
The search for stable compounds containing an antiaromatic cyclic 4π system is a challenge for inventive chemists that can look back on a long history. Here we report the isolation and characterization of the novel 4π-electron tetrasilacyclobutadiene, an analogue of a 4π neutral cyclobutadiene that exhibits surprising features of a Möbius-type aromatic ring. Reduction of RSiCl (R = (Pr)PCH) with KC in the presence of cycloalkyl amino-carbene (cAAC) led to the formation of corresponding silylene 1.
View Article and Find Full Text PDFTuberculous osteo-arthritis unmasked through unusual elbow swelling: A case report.
Int J Surg Case Rep
December 2024
University of Tunis El Manar, Tunis Faculty of Medicine, 1007, Tunisia; Department of Orthopedic Surgery, Hospital Mongi Slim La Marsa, Tunisia.
Introduction And Importance: Tuberculous osteoarthritis, a rare condition affecting the elbow in 1-5 % of cases, poses diagnostic challenges due to its subtle clinical presentation, often resulting in delayed diagnosis. Herein, we present a case of tuberculous osteoarthritis involving the elbow joint. Our aim is to underscore the complexities associated with diagnosing this condition and to emphasize the critical importance of early recognition and appropriate management strategies for optimal patient outcomes.
View Article and Find Full Text PDFFollicular Cystitis, a Rare Diagnosis in an Emergency Setting: A case report and literature review.
Int J Surg Case Rep
December 2024
Urology A Department, University Hospital IBN SINA, Morocco.
Introduction And Importance: Follicular cystitis (FC) is a rare inflammatory disorder of the bladder that predominantly affects women. The exact cause of FC remains largely unknown, although it has been associated with inflammatory processes and bacterial infections, particularly following urinary tract infections. Regarding orphan diseases, like follicular cystitis, where large-scale trials seem virtually impossible, case reports find their place and guide the scientific community to find the best course of action.
View Article and Find Full Text PDFManaging a Mental Disorder With New Technologies: TheLeadless Pacemaker in Reel's Syndrome, a Case Report.
Pacing Clin Electrophysiol
December 2024
Electrophysiology and Cardiac Pacing Unit, Pellegrini Hospital, Naples, Italy.
Reel's syndrome (RS) is an unusual cause of pacemaker lead dislodgement. We present the case of a 59-year-old female patient with Down syndrome (DS) implanted with a dual-chamber endovascular pacemaker due to symptomatic sinus node disfunction, reporting several syncopal episodes in last days and showing abnormal electrical parameters at the 2-months follow-up due to RS. The malfunctioning device was removed and an endocardial leadless pacing system was implanted.
View Article and Find Full Text PDFFilicinic Acid-Based Meroterpenoids with Antiproliferative Activity against Prostate Cancer PC-3 Cells from .
J Org Chem
December 2024
Department of Pharmacy, The First Affiliated Hospital, Jinan University, Guangzhou 510630, China.
Nine new structurally diverse filicinic acid-based meroterpenoids (-) with four kinds of carbon skeletons were isolated from the rhizomes of . Their structures, including the absolute configurations, were elucidated by comprehensive analysis of spectroscopic data, quantum chemical calculations, and single-crystal X-ray diffraction. Structurally, compounds - feature an unprecedented 6/6/5/6/6/6 hexacyclic system with a rare oxaspiro[4.
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