Publications by authors named "R RIVA"
Objective: Flow diversion is increasingly used as an endovascular treatment for intracranial aneurysms. FRED-EPI is a prospective, multicenter, French study, conducted to analyze the safety and efficacy of aneurysm treatment with FRED/FRED Jr (Microvention, AlisoViejo, CA, USA) in current clinical practice.
Patients And Methods: Patients with intracranial aneurysms treated with FRED and FRED Jr who agreed to participate were prospectively and consecutively included in all French centers using these devices.
Spiro-heterocyclic indolenines are privileged scaffolds widely present in numerous indole alkaloids. Here, we develop a novel approach for the one-pot multistep synthesis of different spiro[indole-isoquinolines]. The protocol proposed involves the visible light mediated oxidation of -aryl tertiary amines using bromochloroform with the generation of a reactive iminium species, which reacts with an isocyanide and an electron-rich aniline in a three-component Ugi-type reaction to give an α-aminoamidine.
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- The study aimed to track the outcomes of patients with brain arteriovenous malformations (AVMs) who were managed conservatively, revealing key statistics on related morbidity and mortality over a 10-year period.
- Out of 1010 patients initially recruited, 434 were analyzed, with a majority having unruptured low-grade AVMs, demonstrating a 5% occurrence of serious outcomes and a higher risk in those with a history of rupture or older age.
- During the follow-up of approximately 3.2 years, 8% of patients experienced major intracranial hemorrhages, highlighting the ongoing risks associated with conservative management of AVMs.
Investigations leading to high-quality surfaces and optimized properties in laser remelted Al-Mg-Sc alloys remain scarce. Laser surface remelting (LSR) has been used for the final treatment of these alloys processed through additive manufacturing. However, the direct microstructure responses of the treated cast surfaces have not yet been investigated.
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- Bengamide E is a bioactive compound from Jaspidae sponges, known for its antitumor, antibiotic, and anthelmintic properties, first isolated by Crews et al. in 1989.
- Various total syntheses of Bengamide E and its analogues have been explored, but none have successfully synthesized a stereoisomer with a modified configuration at the C-4 carbon until now.
- This study presents the first total synthesis of the 4--Bengamide E, employing key reactions like chemoenzymatic desymmetrization and a diastereoselective Passerini reaction with a chiral aldehyde and a new lysine-derived isocyanide.