We report the asymmetric synthesis of the 3,6-dideoxy sugars abequose, paratose, and tyvelose from 2-acetylfuran. Conversion of this readily available ketone to a pyranone derivative was followed by transformation to either an α- or β-glycoside via diasteroselective acylation. Michael addition at C2 controlled primarily by the C1 configuration in the glycoside produced 3,6-dideoxy-4-keto sugars, which could be reduced and converted to either fully deprotected monosaccharides or to immediate precursors of glycosyl donors.
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http://dx.doi.org/10.1021/acs.orglett.2c02349 | DOI Listing |
JCI Insight
January 2025
Medicine, Washington University School of Medicine, St. Louis, United States of America.
Hereditary angioedema is an autosomal dominant disorder caused by defects in C1-esterase inhibitor (C1-INH), resulting in poorly controlled activation of the kallikrein-kinin system and bradykinin overproduction. C1-INH is a heavily glycosylated protein in the serine protease inhibitor (SERPIN) family, yet the role of these glycosylation sites remains unclear. To elucidate the functional impact of N-glycosylation in the SERPIN domain of C1-INH, we engineered four sets consisting of 26 variants at or near the N-linked sequon (NXS/T).
View Article and Find Full Text PDFPLoS One
January 2025
Department of Nutrition and Public Health, Faculty of Health and Sport Science, University of Agder, Kristiansand, Norway.
Background: Knowledge about the diet quality among youth who follow different types of plant-based diets is essential to understand whether support is required to ensure a well-planned diet that meets their nutritional needs. This study aimed to investigate how food groups, macronutrient intake, and objective blood measures varied between Norwegian youth following different plant-based diets compared to omnivorous diet.
Methods: Cross-sectional design, with healthy 16-to-24-year-olds (n = 165) recruited from the Agder area in Norway, following a vegan, lacto-ovo-vegetarian, pescatarian, flexitarian or omnivore diet.
PLoS One
January 2025
School of Human Nutrition, McGill University, Montreal, Québec, Canada.
Objective: Managing blood glucose levels is challenging for elite athletes with type 1 diabetes (T1D) as competition can cause unpredictable fluctuations. While fear of hypoglycemia during physical activity is well documented, research on hyperglycemia-related anxiety (HRA) is limited. HRA refers to the heightened fear that hyperglycemia-related symptoms will impair functioning.
View Article and Find Full Text PDFScientificWorldJournal
January 2025
Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Sana'a University, Sana'a, Yemen.
Ethnomedicine exhibits potential in developing affordable effective antidiabetic agents. This work aimed to explore the antidiabetic properties of latex extract both in vivo, utilizing alloxan-induced diabetic rats, and in vitro, through -amylase enzyme testing. Additionally, it sought to formulate optimal effervescent granules derived from the extract.
View Article and Find Full Text PDFInt Med Case Rep J
January 2025
Department of Oral Medicine, Faculty of Dentistry, Universitas Padjadjaran, Bandung, Indonesia.
Introduction: Opportunistic infections (IO) are infections of microbiota (fungi, viruses, bacteria, or parasites) that generally do not cause disease but turn into pathogens when the body's defense system is compromised. This can be triggered by various factors, one of which is due to a weakened immune system due to Diabetes Mellitus (DM), which increases the occurrence of opportunistic infections, especially in the oral cavity. Fungal (oral candidiasis) and viral (recurrent intraoral herpes) infections can occur in the oral cavity of DM patients.
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