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Synthesis of methyl ethers of methyl (methyl ?-D-mannopyranosid)-uronate [PDF]
Chemistry of Natural Compounds, 1987 Methyl (methyl α-D-mannopyranosid)uronate (I) has been obtained by the catalytic oxidation of methyl α-D-mannopyranoside with oxygen in the presence of platinum carbon with a yield of 20%. The partial methylation of (I) and preparative column chromatography on silica gel has provided a convenient method of obtaining all the methyl ethers of (I) in the ...
E. V. Evtushenko, Yu. S. Ovodov
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S‐Adenosylmetliionine and methylation
The FASEB Journal, 1996S-Adenosylmethionine (AdoMet or SAM) plays a pivotal role as a methyl donor in a myriad of biological and biochemical events. Although it has been claimed that AdoMet itself has therapeutic benefits, it remains to be established whether it can be taken up intact by cells.
Richard K. Gordon +6 more
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Methylation of Methyl 6-Hydroxydehydroabietate
Journal of the American Chemical Society, 1945Tl4s inventiop relates to a process for methylating methyl 6-hydroxydehydroabietate, which is commonly represented by the following structural forCSula: CHs 0-OCHs CH, 3T ConH OH Methylation of -this compound has been performed heretofore by reacting the compound with dimethyl sulfate in an...
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The Journal of Physical Chemistry A, 2012
The overall rate constants for the reactions of hydroxyl radicals (OH) with four small methyl esters, namely methyl formate (CH(3)OCHO), methyl acetate (CH(3)OC(O)CH(3)), methyl propanoate (CH(3)OC(O)C(2)H(5)), and methyl butanoate (CH(3)OC(O)C(3)H(7)), were investigated behind reflected shock waves using UV laser absorption of OH radicals near 306.69 ...
David F. Davidson +2 more
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The overall rate constants for the reactions of hydroxyl radicals (OH) with four small methyl esters, namely methyl formate (CH(3)OCHO), methyl acetate (CH(3)OC(O)CH(3)), methyl propanoate (CH(3)OC(O)C(2)H(5)), and methyl butanoate (CH(3)OC(O)C(3)H(7)), were investigated behind reflected shock waves using UV laser absorption of OH radicals near 306.69 ...
David F. Davidson +2 more
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The synthesis of methyl tetrosides and their methyl ethers
Collection of Czechoslovak Chemical Communications, 1980Methyl α- and β-D-threofuranosides (I and II) and methyl α- and β-D-erythrofuranosides (VII and VIII) were prepared in a modified manner. For the preparation of monomethyl ethers of compounds I and II 1,2-O-isopropylidene-β-D-threofuranose (IV) was prepared as the starting compound.
Jiří Jarý, Miroslav Marek
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The Journal of Chemical Thermodynamics, 2019
Abstract The experimental measurements for liquid viscosities of four fatty acid methyl esters, including methyl hexanoate, methyl heptanoate, methyl caprylate, and methyl nonanoate, were carried out with a falling-cylinder viscometer. For the present measurement, the temperature ranges were from 292 K to 362 K and the pressure was reached to 30 MPa.
Xiaojie Wang, Xiaopo Wang, Shanshan Zhu
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Abstract The experimental measurements for liquid viscosities of four fatty acid methyl esters, including methyl hexanoate, methyl heptanoate, methyl caprylate, and methyl nonanoate, were carried out with a falling-cylinder viscometer. For the present measurement, the temperature ranges were from 292 K to 362 K and the pressure was reached to 30 MPa.
Xiaojie Wang, Xiaopo Wang, Shanshan Zhu
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Autoxidation of methyl oleate, methyl stearolate, and methyl 9,10‐dieuteroöleate
Journal of the American Oil Chemists' Society, 1951SummaryA comparative study of the autoxidation of methyl oleate, methyl 9,10‐dideuteroöleate, methyl stearolate, and stearolic acid has re‐emphasized the complexity of the autoxidation phenomenon. The autoxidation of the acetylenic compounds indicates the importance of peroxidation of the active methylene group as compared to the addition of oxygen at ...
F. E. Deatherage +2 more
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Methylation of RNA Purine-Bases by Methyl Radicals
Archives of Biochemistry and Biophysics, 1993During the metabolism of 1,2-dimethylhydrazine (a colon carcinogen) in rats, methyl radicals (.CH3) are produced. To gain an insight into the nature of .CH3 interactions with biomolecules in vivo, we conducted in vitro studies using RNA as a model compound.
J.O. Kang, G. Cohen, K.S. Gallagher
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(Dimethylamino)methyl Methyl Ether
2001(1; R = Me) [62393-45-7] C4H11NO (MW 89.14) InChI = 1S/C4H11NO/c1-5(2)4-6-3/h4H2,1-3H3 InChIKey = YFTNTMQKPLVKFQ-UHFFFAOYSA-N (2; R = Bu) [56275-84-4] C7H17NO (MW 131.22) InChI = 1S/C7H17NO/c1-4-5-6-9-7-8(2)3/h4-7H2,1-3H3 InChIKey = HPUIQFXZXVKZBN-UHFFFAOYSA-N (precursor for N,N-dimethyl(methylene)ammonium salts;2, 3 useful ...
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Biochimie, 1976
The methylation of tRNA is a post-transcriptional modification which is achieved by specific enzymes, the tRNA methylases, with S adenosylmethionine as a methyl donor. The level and pattern of methylation are characteristic of the tRNA species and origin. Abnormally methylated tRNAs have been obtained, in vivo and in vitro, by a variety of methods, and
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The methylation of tRNA is a post-transcriptional modification which is achieved by specific enzymes, the tRNA methylases, with S adenosylmethionine as a methyl donor. The level and pattern of methylation are characteristic of the tRNA species and origin. Abnormally methylated tRNAs have been obtained, in vivo and in vitro, by a variety of methods, and
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