Results 341 to 350 of about 1,050,423 (388)

Methylation of phenol by methyl formate

Bulletin of the Academy of Sciences of the USSR Division of Chemical Science, 1989
In the presence of ZnCl2 and ZrO2, methyl formate methylates phenol to anisole with a high degree of selectivity.
Yu. A. Pazderskii, Ilya I. Moiseev, V. A. Nasadyuk, E. V. Fedevich   +3 more
openaire   +2 more sources

Methyl(trifluoro-methyl)dioxirane

2005
A review of the article Methyl(trifluoro-methyl)dioxirane.
Caterina Fusco, Jack K. Crandall, Lucia D'Accolti, Ruggero Curci   +3 more
openaire   +4 more sources

Methyl Orthocarboxylates as Methylating Agents of Heterocycles

European Journal of Organic Chemistry, 2002
AbstractFor Abstract see ChemInform Abstract in Full Text.
Christiane Huel, Genevieve Flad, Sylvie Thirot, Yves L. Janin   +3 more
openaire   +3 more sources

Circulating tumor DNA methylation profiles enable early diagnosis, prognosis prediction, and screening for colorectal cancer

Science Translational Medicine, 2020
Circulating tumor DNA methylation–based signatures are potential biomarkers for early diagnosis and prognosis of colorectal cancer. Methylation marks the spot The detection of circulating tumor DNA in the blood is a noninvasive method that may help ...
Hui‐yan Luo, Qi Zhao, Wei Wei, Lianghong Zheng, Shaohua Yi, Gen Li, Wenqiu Wang, Hui Sheng, Heng-Ying Pu, Hai-Yu Mo, Zhixiang Zuo, Zexian Liu, Chaofeng Li, C. Xie, Z. Zeng, Wei-min Li, X. Hao, Yuying Liu, S. Cao, Wanli Liu, Sarah Gibson, Kang Zhang, Guo-Liang Xu, R. Xu   +23 more
semanticscholar   +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.
R. J. P. Williams, F. R. Williams, S. Bendle, Hugh Allen Oliver Hill, G. Agnes   +4 more
openaire   +2 more sources

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
openaire   +1 more source

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 ...
Tony Kouzarides, Andrew J. Bannister
openaire   +3 more sources

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...
openaire   +2 more sources

METHYLATION AND MOOD

The Lancet, 1984
S-adenosylmethionine (SAM) has antidepressant properties. The commonest neuropsychiatric complication of severe folate deficiency is depression. These independent observations suggest that methylation in the nervous system may underlie the expression of mood and related processes and may be implicated in some affective disorders; suggest new biological
M. W. P. Carney, M. W. P. Carney, Brian Toone, Brian Toone, E. H. Reynolds, E. H. Reynolds   +5 more
openaire   +2 more sources

S‐Adenosylmetliionine and methylation

The FASEB Journal, 1996
S-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, B. P. Doctor, Peter P. McCann, Jacov Tal, K. Pardhasaradhi, Petek K. Chiang, G. C. Zeng   +6 more
openaire   +2 more sources