The effect of secondary reactions on DHAP-dependent aldolase stereoselective synthesis yields is reported. The fuculose-1-phosphate aldolase catalyzed synthesis between DHAP and Cbz-S-alaninal has been chosen as case study. It has been demonstrated that DHAP is not only chemically degraded in the reaction medium, but also enzymatically. The last reaction has been shown to take place when type II aldolases are used as biocatalysts. In order to minimize the effect of non-desired reactions, temperature reduction has been shown to be favorable, and operation at 4 degrees C has been chosen as appropriate. On the other hand, the fed-batch addition of DHAP also increased the synthesis yields and, combined with low temperature, led to almost quantitative conversion.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1002/bit.20690 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Cystic Echinococcus of the Liver.
J Gastrointest Surg
January 2025
Department of Surgery, The Ohio State University Wexner Medical Center, Columbus, OH.
Introduction: Cystic echinococcosis is a widely endemic helminthic disease caused by infection with metacestodes (larval stage) of the Echinococcus granulosus tapeworm, which is transmitted by dogs and found on every continent except Antarctica. We sought to review the life cycle, epidemiology, symptoms, diagnostic methods, and treatment of Echinococcus granulosus of the liver.
Methods: A comprehensive review was conducted using Medline/PubMed, Google Scholar, Cochrane Library, and the Web of Science accessed between 1990 and 2024.
PEN-FAST-ED: Utilizing the PEN-FAST decision tool to guide antibiotic prescribing in the emergency department.
Am J Emerg Med
January 2025
Department of Pharmacy, Sarasota Memorial Health Care System, 1700 S Tamiami Trail, Sarasota, FL 34239, USA.
Background: Patient-reported penicillin allergies are frequently encountered in the emergency department (ED), which often lead to non-beta-lactam antibiotic use despite beta-lactams' place as first-line therapy in most bacterial infections. The PEN-FAST clinical decision tool was developed and validated to identify patients with a low risk of true penicillin allergies that do not require formal skin testing for rechallenging. The tool consists of four questions that add up to a total score ranging from 0 to 5.
View Article and Find Full Text PDFPrevalence and predictors of sub-optimal laboratory monitoring of selected higher risk medicines in Irish general practice: a 5-year retrospective cohort study of community-dwelling older adults.
BMJ Open
January 2025
Department of General Practice, University College Cork, Cork, Ireland
Objectives: To describe the prevalence of sub-optimal monitoring for selected higher-risk medicines in older community-dwelling adults and to evaluate patient characteristics and outcomes associated with sub-optimal monitoring.
Study Design: Retrospective observational study (2011-2015) using historical general practice-based cohort data and linked dispensing data from a national pharmacy claims database.
Setting: Irish primary care.
Limited reactivity of pyroxene and plagioclase in batch experiments with supercritical CO in the presence of NaCl and NaHCO in the context of CO sequestration via carbonation.
Environ Sci Pollut Res Int
January 2025
Council for Geoscience, Private Bag X112, Pretoria, 0001, South Africa.
One-step high-pressure and high-temperature direct aqueous mineral carbonation of tailings derived from mining of Platinum Group Metals in South Africa requires a fundamental understanding of the reactivity of the most dominant mineral phases, i.e. pyroxene and plagioclase (66 wt.
View Article and Find Full Text PDFCytotoxic Activity of Bisphosphonic Derivatives Obtained by the Michaelis-Arbuzov or the Pudovik Reaction.
Pharmaceuticals (Basel)
January 2025
Department of Organic Chemistry and Technology, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Műegyetem rkp. 3, 1111 Budapest, Hungary.
Methylenebisphosphonic derivatives including hydroxy-methylenebisphosphonic species may be of potential biological activity, and a part of them is used in the treatment of bone diseases. Methylenebisphosphonates may be obtained by the Michaelis-Arbuzov reaction of suitably α-substituted methylphosphonates and trialkyl phosphites or phosphinous esters, while the hydroxy-methylene variations are prepared by the Pudovik reaction of α-oxophosphonates and different >P(O)H reagents, such as diethyl phosphite and diarylphosphine oxides. After converting α-hydroxy-benzylphosphonates and -phosphine oxides to the α-halogeno- and α-sulfonyloxy derivatives, they were utilized in the Michaelis-Arbuzov reaction with trialkyl phosphites and ethyl diphenylphosphinite to afford the corresponding bisphosphonate, bis(phosphine oxide) and phosphonate-phosphine oxide derivatives.
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!