Catalytic and asymmetric domino Michael/aldol reaction of 1,2-dicarbonyl compounds with α,β-unsaturated ketones under the synergetic catalysis of chiral-at-metal rhodium complexes and pyrrolidine to deliver tertiary α-hydroxylation-cyclopentanones (45-89% yields with 81-99% ee and up to >20:1 dr) bearing three contiguous stereogenic centers had been established. Moreover, the scalability and practical utility of this protocol were well demonstrated by employing a gram-scale reaction and some representative transformations.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acs.joc.3c01931 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Surgical and Pathological Results Following Neoadjuvant Nivolumab and Platinum-Based Chemotherapy for Locally Advanced Resectable NSCLC: A Multicentre Real-World Series From England.
Clin Lung Cancer
December 2024
Department of Thoracic Surgery, Liverpool Heart and Lung Hospital, Liverpool, UK.
Background: To evaluate the real-world surgical and pathological outcomes following neoadjuvant nivolumab in combination with chemotherapy in a multicentre national cohort of patients.
Methods: Retrospective analysis on consecutive patients treated in three tertiary referral hospitals in UK with neoadjuvant chemotherapy and immunotherapy (nivolumab) for stage II-IIIB nonsmall cell lung cancer (March 2023-May 2024). Surgical and pathological outcomes were assessed.
Outbreak of carbapenem resistant Klebsiella pneumoniae in a neurorehabilitation unit: genomic epidemiology reveals complex transmission pattern in a tertiary care hospital.
J Glob Antimicrob Resist
January 2025
Microbiology Unit, Clinical Pathology Department, Piacenza General Hospital, Piacenza, Italy; Medicine and Surgery Department, University of Parma, Parma, Italy.
Objectives: Infections by Carbapenem-Resistant Enterobacterales in hospitals represent a severe threat but little is known on outbreaks in rehabilitation wards caused by Klebsiella pneumoniae producing Klebsiella pneumoniae Carbapenemase (KPC-Kp). We report an outbreak by KPC-Kp, in a Neurorehabilitation Unit in Italy, analysed through Whole-Genome Sequencing (WGS) for transmission routes reconstruction to improve management of KPC-Kp infections in rehabilitation units.
Methods: We investigated cases and KPC-Kp isolates collected from February to October 2022 from hospital surveillance.
Chapter 0: Introduction to the Consensus on Primary Hyperparathyroidism from the French Society of Endocrinology, French Association of Endocrine Surgery and French Society of Nuclear Medicine.
Ann Endocrinol (Paris)
January 2025
Department of Surgery (CVMC), Unit of Endocrine and Metabolic Surgery, University of Lorraine, CHU Nancy-Hospital Brabois Adultes, Nancy, France.
This consensus on primary hyperparathyroidism, drawn up under the aegises of the French Society of Endocrinology (SFE), French Association of Endocrine Surgery (AFCE) and French Society of Nuclear Medicine (SFMN), provides an update on positive, etiological and differential diagnosis and treatment in primary hyperparathyroidism. These recommendations take account of recent increase in the prevalence of primary hyperparathyroidism, due to 1. more systematic routine measurement of blood calcium and improved quality of parathyroid hormone assays, 2.
View Article and Find Full Text PDFCervical balloon catheter versus Dilapan-S for outpatient cervical ripening: A randomized controlled trial.
Am J Obstet Gynecol MFM
January 2025
Division of Maternal Fetal Medicine, Brigham and Women's Hospital.
Background: As induction of labor increases in the United States, safe, effective outpatient cervical ripening has been explored as a method to decrease the inpatient time burden. The most effective method of outpatient mechanical cervical ripening remains unclear.
Objective: To evaluate if Dilapan-S is non-inferior to cervical balloon for outpatient cervical ripening (CR) based on change in Bishop score.
Factors affecting 1-year persistence with vedolizumab for ulcerative colitis: a multicenter, retrospective real-world study.
Intest Res
January 2025
Center for Advanced IBD Research and Treatment, Kitasato University Kitasato Institute Hospital, Tokyo, Japan.
Background/aims: The objectives of this real-world study were to determine 1-year persistence with vedolizumab in patients with ulcerative colitis and to evaluate factors contributing to loss of response.
Methods: In this multicenter, retrospective, observational chart review, patients with moderately to severely active ulcerative colitis who received ≥ 1 dose of vedolizumab in clinical practice at 16 tertiary hospitals in Japan (from December 2018 through February 2020) were enrolled.
Results: Persistence with vedolizumab was 64.
Want 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!