Results 1 to 10 of about 8,966 (127)

Biocatalytic Synthesis of Homochiral 2-Hydroxy-4-butyrolactone Derivatives by Tandem Aldol Addition and Carbonyl Reduction. [PDF]

ACS Catal, 2023
Chiral 2-hydroxy acids and 2-hydroxy-4-butyrolactone derivatives are structural motifs often found in fine and commodity chemicals. Here, we report a tandem biocatalytic stereodivergent route for the preparation of these compounds using three stereoselective aldolases and two stereocomplementary ketoreductases using simple and achiral starting ...
Moreno CJ, Hernández K, Gittings S, Bolte M, Joglar J, Bujons J, Parella T, Clapés P.   +7 more
europepmc   +4 more sources

The influence of solvent on the pyrolysis of organosolv lignins extracted from willow

Energy Conversion and Management: X, 2022
The targeted application of lignin needs deeper understanding of its physicochemical property. Herein, three kinds of organosolv lignin samples were obtained from willow using three typical organosolv-water co-solvents, and their properties and pyrolysis
Wenli Wang, Yichen Liu, Yue Wang, Longfei Liu, Changwei Hu   +4 more
doaj   +1 more source

Grifolamine A, a novel bis-γ-butyrolactone from Grifola frondosa exerted inhibitory effect on α-glucosidase and their binding interaction: Affinity and molecular dynamics simulation

Current Research in Food Science, 2022
A novel bis-γ-butyrolactone grifolamine A (1), the first γ-butyrolactone dimer from nature, together with three known γ-butyrolactones (2–4), was isolated from the byproduct from Grifola frondosa polysaccharides preparation process.
Shaodan Chen, Zhenqiang Mu, Tianqiao Yong, Jiangyong Gu, Yifan Zhang, Xiong Gao, Yizhen Xie, Chun Xiao, Huiping Hu, Xiaobing Yang, Xiangmin Li, Manjun Cai, Qingping Wu   +12 more
doaj   +1 more source

Recreational drug poisoning with gamma-butyrolactone and 1,4-butanediol in Taiwan

Journal of Medical Sciences, 2023
Restriction of gamma-hydroxybutyrate (GHB) in 1990 resulted in a shift toward the use of gamma-butyrolactone (GBL) or 1,4-butanediol (1,4-BD), which remain unregulated in most countries, including Taiwan.
Feng-Chen Chen, Yan-Chiao Mao, Jou-Fang Deng, Cheng-Hsuan Ho   +3 more
doaj   +1 more source

Kinetic Modeling for the Gas-Phase Hydrogenation of the LOHC γ-Butyrolactone–1,4-Butanediol on a Copper-Zinc Catalyst

Reactions, 2022
Liquid organic hydrogen carriers (LOHCs) are an interesting alternative for hydrogen storage as the method is based on the reversibility of hydrogenation and dehydrogenation reactions to produce liquid and safe components at room temperature. As hydrogen
Vincent Gautier, Isabelle Champon, Alban Chappaz, Isabelle Pitault   +3 more
doaj   +1 more source

Vapor-Phase Oxidant-Free Dehydrogenation of 2,3- and 1,4-Butanediol over Cu/SiO₂ Catalyst Prepared by Crown-Ether-Assisted Impregnation

Chemistry, 2023
A silica-supported copper (Cu/SiO2) catalyst containing highly dispersed Cu nanoparticles was prepared via a crown-ether-assisted impregnation method.
Enggah Kurniawan, Shuya Hosaka, Masayuki Kobata, Yasuhiro Yamada, Satoshi Sato   +4 more
doaj   +1 more source

Synthesis and Biological Evaluation of Analogues of Butyrolactone I as PTP1B Inhibitors

Marine Drugs, 2020
In recent years, a large number of pharmacologically active compounds containing a butenolide functional group have been isolated from secondary metabolites of marine microorganisms.
Bihong Hong, Jianlin He, Chaochun Fan, Chao Tang, Qingqing Le, Kaikai Bai, Siwen Niu, Meitian Xiao   +7 more
doaj   +1 more source

Diaportones A–C: Three New Metabolites From Endophytic Fungus Diaporthe foeniculina BZM-15

Frontiers in Chemistry, 2021
Phytochemical investigation of Diaporthe foeniculina BZM-15 led to one new γ-butyrolactone derivative, diaportone A (1), one cyclopentenone derivative, diaportone B (3), and one monoterpene derivative, diaportone C (5), along with six known compounds (2,
Fenghua Kang, Fenghua Kang, Xiuxiang Lu, Sha Zhang, Sha Zhang, Dekun Chen, Dekun Chen, Min Kuang, Min Kuang, Weiwei Peng, Weiwei Peng, Jianbing Tan, Jianbing Tan, Kangping Xu, Kangping Xu, Zhenxing Zou, Zhenxing Zou, Haibo Tan, Haibo Tan, Haibo Tan   +19 more
doaj   +1 more source

Analysis of Volatile Components in Tremella fuciformis by Electronic Nose Combined with GC-MS

Journal of Food Quality, 2022
In order to quickly evaluate the quality of Tremella fuciformis, the volatile components of T. fuciformis from 4 provinces in China, including Hebei, Henan, Fujian, and Sichuan, were analyzed by electronic nose combined with gas chromatography-mass ...
Lijun Fu, Jing Tian, Li Liu, Yongzheng Ma, Xiumin Zhang, Changyang Ma, Wenyi Kang, Yong Sun   +7 more
doaj   +1 more source

Effect of the Solvate Environment of Lithium Cations on the Resistance of the Polymer Electrolyte/Electrode Interface in a Solid-State Lithium Battery

Membranes, 2022
The effect of the composition of liquid electrolytes in the bulk and at the interface with the LiFePO4 cathode on the operation of a solid-state lithium battery with a nanocomposite polymer gel electrolyte based on polyethylene glycol diacrylate and SiO2
Alexander V. Chernyak, Nikita A. Slesarenko, Anna A. Slesarenko, Guzaliya R. Baymuratova, Galiya Z. Tulibaeva, Alena V. Yudina, Vitaly I. Volkov, Alexander F. Shestakov, Olga V. Yarmolenko   +8 more
doaj   +1 more source