Levulinyl cellulose esters have been produced as an effective renewable binder for architectural coatings. The title compound, C7H10O4 (systematic name: 2-methyl-5-oxo-tetra-hydro-furan-2-yl acetate), assigned as the esterifying species, was isolated and crystallized to confirm the structure. In the crystal, the mol-ecules pack in layers parallel to (102) utilizing weak C-H⋯O inter-actions.
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| http://dx.doi.org/10.1107/S1600536813013561 | DOI Listing |
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Cytotoxic prenylated xanthone derivatives from the twigs of .
Nat Prod Res
October 2024
Department of Agro-Industrial, Food, and Environmental Technology, Faculty of Applied Science, King Mongkut's University of Technology North Bangkok (KMUTNB), Bangkok, Thailand.
A new prenylated xanthone, kaennacowanol D (), was isolated from the twigs of together with 22 known analogs. The structure of the new metabolite was elucidated by extensive spectroscopic analysis, particularly using HRMS and NMR. Kaennacowanol D is the first example of a natural xanthone containing a levulinyl group incorporated at the terminal prenyl unit ester bond.
View Article and Find Full Text PDFMicrobial production of levulinic acid from glucose by engineered Pseudomonas putida KT2440.
J Biotechnol
November 2024
Department of Biological Engineering, College of Engineering, Konkuk University, Seoul, Republic of Korea; Institute for Ubiquitous Information Technology and Application, Konkuk University, Seoul, Republic of Korea. Electronic address:
Levulinic acid(LA) is produced through acid-catalyzed hydrolysis and dehydration of lignocellulosic biomass. It is a key platform chemical used as an intermediate in various industries including biofuels, cosmetics, pharmaceuticals, and polymers. Traditional LA production uses chemical conversion, which requires high temperatures and pressures, strong acids, and produces undesirable side reactions, repolymerization products, and waste problems Therefore, we designed an integrated process to produce LA from glucose through metabolic engineering of Pseudomonas putida KT2440.
View Article and Find Full Text PDFChemical synthesis of oligosaccharide derivatives with partial structure of β1-3/1-6 glucan, using monomeric units for the formation of β1-3 and β1-6 glucosidic linkages.
Biosci Biotechnol Biochem
September 2023
Research Faculty of Agriculture, Hokkaido University, Sapporo, Japan.
β1-3/1-6 Glucans, known for their diverse structures, comprise a β1-3-linked main chain and β1-6-linked short branches. Laminarin, a β1-3/1-6 glucan extracted from brown seaweed, for instance, includes β1-6 linkages even in the main chain. The diverse structures provide various beneficial functions for the glucan.
View Article and Find Full Text PDFA review on biomass-derived levulinic acid for application in drug synthesis.
Crit Rev Biotechnol
March 2022
Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, PR China.
Levulinic acid (LEV) has been identified as a key building block chemical produced entirely from biomass. Its derivatives can be used to synthesize a variety of value-added chemicals, such as 2-butanone, 2-methyltetrahydrofuran, and so on. LEV has carbonyl and carboxyl functional groups, which makes it flexible, diverse, and unique during drug synthesis.
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