Results 171 to 180 of about 31,939 (198)

10-Methyl- and 9,10-dimethylacridinium methyl sulfate

Acta Crystallographica Section C Crystal Structure Communications, 2002
The title compounds, C(14)H(12)N(+).CH(3)O(4)S(-), (I), and C(15)H(14)N(+).CH(3)O(4)S(-), (II), respectively, crystallize with the planar 10-methylacridinium or 9,10-dimethylacridinium cations arranged in layers, parallel to the twofold axis in (I) and perpendicular to the 2(1) axis in (II).
Joanna, Meszko, Artur, Sikorski, Olexyj M, Huta, Antoni, Konitz, Jerzy, Błazejowski   +4 more
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Methyl transfer from methyl vitamin B12

Biochimica et Biophysica Acta (BBA) - General Subjects, 1971
Abstract The transfer of the methyl group from methyl vitamin B12 to thiolates and other anions has been studied. In the presence of oxidising agents, including molecular oxygen, transfer is rapid. In the absence of such reagents no methyl transfer is observed.
G, Agnes, H A, Hill, J M, Pratt, S C, Ridsdale, F S, Kennedy, R J, Williams   +5 more
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Histone Methylation: Recognizing the Methyl Mark

2003
Publisher Summary Histone N-terminal tails are subject to a variety of covalent modifications that ultimately affect chromatin structure. One such modification is N-methylation, which occurs on Lys (K) and Arg (R) amino acids. The enzymes performing these modifications are the histone N-methyl transferases (HMTs) that catalyze the transfer of a ...
Andrew J, Bannister, Tony, Kouzarides
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Protein methylation

Current Opinion in Cell Biology, 1993
Proteins can be enzymatically modified in several ways by the addition of methyl groups from S-adenosylmethionine. Reactions forming methyl esters on carboxyl groups are potentially reversible and can modulate the activity of the target protein; in the past year, advances have been made in understanding the physiological roles of four distinct systems ...
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Monoepoxidation of methyl linoleate: (±)‐methyl vernolate and (±)‐methyl coronarate

Journal of the American Oil Chemists' Society, 1968
AbstractThe two monoepoxides resulting from the epoxidation of methyl linoleate with monoperphthalic acid have been separated from each other by column chromatography. Degradation reactions on each of these established that the separation occurred without concomitant rearrangement of the double bond or the epoxide ring.
M. Ferrari, E. L. Ghisalberti, U. M. Pagnoni, F. Pelizzoni   +3 more
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Partial methylation of methyl glycosides

Chemistry of Natural Compounds, 1975
The partial methylation of methyl xylo-, arabino-, lyxo- and rhamnopyranosides by Purdie's method has been studied; it is possible to use the results obtained for the isolation of individual methyl ethers by micro-preparative GLC.
E. V. Evtushenko, Yu. S. Ovodov
openaire   +1 more source

Methylation by methyl vitamin B12

Journal of the Chemical Society D: Chemical Communications, 1971
Methyl vitamin B12 is shown to be capable of transferring methyl groups to HgII, TlIII, PtII, and AuI; two different reaction paths are involved, one of which, with HgII or TlIII, is an acid-base reaction while the other is probably an oxidation-reduction reaction for it requires both PtII and PtIV, or AuI and AuIII.
G. Agnes, S. Bendle, H. A. O. Hill, F. R. Williams, R. J. P. Williams   +4 more
openaire   +1 more source

(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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Methylation of Methyl 6-Hydroxydehydroabietate

Journal of the American Chemical Society, 1945
Tl4s 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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When RNA methylation meets DNA methylation

Nature Genetics, 2022
Wenqi Xu, Hongjie Shen
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