139686-85-4Relevant academic research and scientific papers
Characterization of glycerol phosphate oxidase from Streptococcus pneumoniae and its application for ketose synthesis
Li, Zijie,Qiao, Yingxin,Cai, Li,Nakanishi, Hideki,Gao, Xiao-Dong
, p. 504 - 507 (2015)
Glycerol phosphate oxidase from Streptococcus pneumoniae (GPOS.pne) was purified and characterized. By the actions of GPOS.pne and dihydroxyacetone phosphate (DHAP)-dependent aldolases, various ketoses including rare sugars were synthesized with glyceraldehydes as acceptors in a one-pot four-enzyme system.
Mixed-acid systems for the catalytic synthesis of methyl levulinate from cellulose
Tominaga, Ken-Ichi,Mori, Atsushi,Fukushima, Yuriko,Shimada, Shigeru,Sato, Kazuhiko
, p. 810 - 812 (2011)
Mixed-acid systems consisting of both Lewis and Bronsted acids were found to be efficient catalysts for direct synthesis of methyl levulinate from cellulose. The Royal Society of Chemistry.
Facile enzymatic synthesis of ketoses
Wen, Liuqing,Huang, Kenneth,Wei, Mohui,Meisner, Jeffrey,Liu, Yunpeng,Garner, Kristina,Zang, Lanlan,Wang, Xuan,Li, Xu,Fang, Junqiang,Zhang, Houcheng,Wang, Peng George
, p. 12654 - 12658 (2015)
Studies of rare ketoses have been hampered by a lack of efficient preparation methods. A convenient, efficient, and cost-effective platform for the facile synthesis of ketoses is described. This method enables the preparation of difficult-to-access ketopentoses and ketohexoses from common and inexpensive starting materials with high yield and purity and without the need for a tedious isomer separation step. A spoonful of sugar: A convenient, efficient, and cost-effective platform for the facile synthesis of ketoses is described. This method, which involves a one-pot mulitenzyme (OPME) reaction, enables the preparation of rare ketopentoses and ketohexoses from common and inexpensive starting materials with high yield and purity and without the need for a tedious isomer separation step.
Formation of 3-hexuloses in aldol reactions, analysis of the products as their O-isopropylidene derivatives by GC-MS
Ekeberg, Dag,Morgenlie, Svein
, p. 2171 - 2176 (2004)
A method for analysis of mixtures of 3-hexuloses by gas chromatography mass spectrometry of their di-O-isopropylidene derivatives has been elaborated. The origin of characteristic fragment ions in the mass spectra is suggested on the basis of the spectra of d12 analogues, obtained by acetonation with acetone-d6 and on MS/MS investigations. The method has been applied to product mixtures from aldol reactions between glycero-tetrulose and glycolaldehyde and between 2-pentuloses and formaldehyde. An interesting result is the formation of ribo-3-hexulose with a high degree of stereoselectivity in alkali catalysed reaction between erythro-2-pentulose and formaldehyde.
One-pot synthesis of L-fructose using coupled multienzyme systems based on rhamnulose-1-phosphate aldolase
Franke, Dirk,Machajewski, Timothy,Hsu, Che-Chang,Wong, Chi-Huey
, p. 6828 - 6831 (2003)
Two methods have been developed for the highly efficient enzymatic synthesis of L-fructose: one is based on rhamnulose-1-phosphate aldolase and acid phosphatase using racemic glyceraldehyde and dihydroxyacetone phosphate as substrates; the other is to gen
Synthesis and Characterization of Sn, Ge, and Zr Isomorphous Substituted MFI Nanosheets for Glucose Isomerization to Fructose
Dugkhuntod, Pannida,Maineawklang, Narasiri,Rodaum, Chadatip,Pornsetmetakul, Peerapol,Saenluang, Kachaporn,Salakhum, Saros,Wattanakit, Chularat
, (2022)
Various metals including Sn, Ge, and Zr have been successfully incorporated into the MFI nanosheets via a one-pot synthesis. The as-synthesized zeolites exhibit high external surface area and mesopore volume without large metal oxides aggregated on zeolite surfaces. Interestingly, the successful introduction of heteroatoms in MFI nanosheets can be confirmed by shifted XRD peaks corresponding to the unit cell expansion due to the replacement of metals into the framework. In addition, the UV-Vis absorbance spectra reveal that at the suitable metal loading the incorporated tetrahedral coordination of metal species in the zeolite framework has been obtained. To illustrate the benefits of the prepared catalysts, the glucose isomerization to fructose was carried out in a water/dioxane system. Obviously, the SnMFI-NS samples, containing the high dispersion of metal isomorphous species demonstrate the outstanding catalytic behavior in term of fructose selectivity (>85 %).
Few-Unit-Cell MFI Zeolite Synthesized using a Simple Di-quaternary Ammonium Structure-Directing Agent
Abeykoon, Milinda,Al-Thabaiti, Shaeel,Bell, Alexis T.,Boscoboinik, J. Anibal,Dai, Heng,Dauenhauer, Paul,Dorneles de Mello, Matheus,Duan, Xuekui,Ghosh, Supriya,Kamaluddin, Huda Sharbini,Khan, Zaheer,Kumar, Gaurav,Li, Xinyu,Lu, Peng,Luo, Tianyi,Mkhoyan, K. Andre,Narasimharao, Katabathini,Qi, Liang,Rimer, Jeffrey D.,Tsapatsis, Michael
, p. 19214 - 19221 (2021)
Synthesis of a pentasil-type zeolite with ultra-small few-unit-cell crystalline domains, which we call FDP (few-unit-cell crystalline domain pentasil), is reported. FDP is made using bis-1,5(tributyl ammonium) pentamethylene cations as structure directing agent (SDA). This di-quaternary ammonium SDA combines butyl ammonium, in place of the one commonly used for MFI synthesis, propyl ammonium, and a five-carbon nitrogen-connecting chain, in place of the six-carbon connecting chain SDAs that are known to fit well within the MFI pores. X-ray diffraction analysis and electron microscopy imaging of FDP indicate ca. 10 nm crystalline domains organized in hierarchical micro-/meso-porous aggregates exhibiting mesoscopic order with an aggregate particle size up to ca. 5 μm. Al and Sn can be incorporated into the FDP zeolite framework to produce active and selective methanol-to-hydrocarbon and glucose isomerization catalysts, respectively.
Facile Synthesis of the Next Higher Ketoses from Aldoses
Matsumoto, Toshihiko,Enomoto, Tatsuya,Kurosaki, Toshikazu
, p. 610 - 611 (1992)
A novel and facile synthesis of the next higher ketohexoses in high yield is successfully achieved by treating aldopentoses with formaldehyde in the presence of 3-ethylbenzothiazolium bromide as a catalyst.
Enzymatic synthesis of d-sorbose and d-psicose with aldolase RhaD: Effect of acceptor configuration on enzyme stereoselectivity
Li, Zijie,Cai, Li,Qi, Qingsheng,Wang, Peng George
, p. 7081 - 7084 (2011)
It was previously reported that DHAP-dependent aldolase RhaD selectively chooses l-glyceraldehyde from racemic glyceraldehyde to produce l-fructose exclusively. Contrastingly, we discovered that d-glyceraldehyde is also tolerated as an acceptor and the stereoselectivity of the enzyme is lost in the corresponding aldol addition. Furthermore, we applied this property to efficiently synthesize two rare sugars d-sorbose and d-psicose.
Hydroxyapatite-Supported Polyoxometalates for the Highly Selective Aerobic Oxidation of 5-Hydroxymethylfurfural or Glucose to 2,5-Diformylfuran under Atmospheric Pressure
Guan, Hongyu,Li, Ying,Wang, Qiwen,Wang, Xiaohong,Yu, Hang
, p. 997 - 1005 (2021/08/06)
(NH4)5H6PV8Mo4O40 supported on hydroxyapatite (HAP) (PMo4V8/HAP (n)) was prepared through the ion exchange of hydroxy groups. This ion exchange favored the oxidative conversion of 5-hydroxymethylfurfural (5-HMF) to 2,5-diformylfuran (DFF) in a one-pot cascade reaction with 96.0 % conversion and 83.8 % yield under 10 mL/min of O2 flow. PMo4V8/HAP (31) was used to explore the production of DFF directly from glucose with the highest yield of 47.9 % so far under atmospheric oxygen, whereas the yield of DFF increased to 54.7 % in a one-pot and two-step reaction. These results indicated that the active sites in PMo4V8/HAP (31) retained their activities without any interference toward one another, which enabled the production of DFF in a more cost-saving way by only using oxygen and one catalyst in a one-step reaction. Meanwhile, the rigid structure of HAP and strong interaction in PMo4V8/HAP (31) allowed this catalyst to be reused for at least six times with high stability and duration.
