Methyl, mono

Yu M, Nowak AP, Deming TJ, Pochan DJ (1999) Methylated mono- and diethyleneglycol functionalized polylysines nonionic, alpha-helical, water-soluble polypeptides. J Am Chem Soc 121 12210-12211... 

Hwang JY, Deming TJ (2001) Methylated mono- and di(ethylene glycol)-functionalized beta-sheet forming polypeptides. Biomacromolecules 2 17-21... 

Figure 4. Total ion chromatogram of the methylated mono/oligosaccharide obtained by the partial acid hydrolysis of the bran arabinogalactoglu-curonoxylan.

The addition of t-Bu2>Si to 1,4-diaza-l,3-butadienes competes with dimerization of the silylene only when the concentration of t-BinSi is low170. Subtle steric effects must also be responsible for the addition of /-BinSi to the W-cyclohexyl mono-imine of benzil, while only the silylene dimer undergoes addition under similar conditions in the presence of the IV-methyl mono-imine171. It may be that t-Bi Si and its dimer t-Bu2Si=SiBu-t2, both formed simultaneously upon photolysis of cyclo (t-Bu2Si)3, are in equilibrium, and the steric effect is upon the (2+4) cycloaddition of the disilene. 

Peaks identified penta-O-methyl-mono-O-acetylmyoinositol derived from mono-linked myoinositol, 2,3,6-tri-O-methyl-1,4,5-tri-O-acetylglucitol derived from a 4-linked glucose, and 3,4,6-tri-O-methyI-l, 5,di-0-aeetyl-2-acetamido-2-N-methylglucitol derived from a terminal H-acetylglucosamine. The PMAA sample was chromatographed on a 1.5 m X 2 mm ID column packed with 3% OV-210 in a Finnigan automated GC/MS model 3300/6110. Temperature program 150° to 215°C at 6°C/min. 

In 1953, Wolfrom and El-TaraboulsP converted methyl mono-O-sodio-a-D-glucopyranoside to an 0-[(methylthio)thiocarbonyl] derivative, the triacetate of which was identical with that prepared by Lieser and Leck-zyck.2 No reaction with carbon disulfide occurred in the total absence of water, a phenomenon also encountered by Scherer and Gotsch with cellulose. 

The transformation products of allicin and odier thiosulfinates present in crushed garlic is greatly accelerated and expanded upon heating such as during steam distillation or cooking. As many as 20 different sulfides have been identified in the steam distillate and include diallyl mono to hexasulfides, allyl methyl mono to hexasulfides dimethyl mono to hexasulfides, and allyl 1-propenyl di and trisulfides [38]. 

We turn now to the ionization process of a series of methyl mono-substituted ring systems pyridines, anilines, phenols, and substituted benzoic acids. Table 2 shows the free energies, A G, the heats, A H, and entropies of ionization, A S, for a number of these compounds. The compounds fall into two classes, according to the different ionic nature of the ionization process. The pyridine and aniline ionizations are of the type... 

Free energies, heats, avd entropies of ionization, methyl mono- substitnied compounds ... 

In Table 4 there are shown the AG, AH and AS values for the ionization process of some methyl disubstituted pyridines, anilines and phenols. As might be expected, they are not as easily interpreted as the data for the methyl mono-substituted derivatives. 

For the methyl mono-substituted phenols, the cresols, it has been suggested that solvent effects are predominant. The same seems likely in the xylenols. 

The perfluoroalkyl group CF3 has a relatively large van der Waals volume -larger than methyl, mono-fluoromethyl and di-fluoromethyl and between those of the iso-propyl and the tert-butyl groups [35]. The latter is comparable in size to the perfluoro-iso-propyl group. 

D-Glucopyranoside, methyl, isododecanoate (2 3). See Methyl glucose sesquiisostearate D-Glucopyranoside, methyl, isooctadecanoate. See Methyl glucose isostearate D-Glucopyranoside, methyl, mono- and diesters with mixed octanoic and decanoic acids. See Methyl glucose sesquicaprylate/sesquicaprate... 

Methyl glucose sesquicaprylate/sesquicaprate Synonyms D-Glucopyranoside, methyl, mono-and di-esters with mixed octanoic and decanoic acids... 

CjHjOgN Nitrobenzol (Xi) —CgHjCljO, Methyl-mono(trichloracetyl)-tartrat (Xj) [P]... 

Use has been made of the relationship between the optical rotation of D-glucans in water and cuprammonium hydroxide solution and that of the methyl mono-O-methyl-D-glucoside which is methylated on the same hydroxyl group as that involved in the glucosidic link of the glucan 34). See Table I. 

The relative reactivity of hydroxy groups of methyl a-D-glucopyranoside and methyl mono-Q-pentyloxymethyl-a-D-glucopyranosides in reaction with pentyloxymethyl chloride has been shown to be 3-OH > 6-OH - 2-OH > 4-OH. Aldol condensations of EtOCHaCHO has afforded 2,4,6-tri-Q-ethyl- -D,L-galacto- and glucopyranose. ... 

Preparation by treatment of methyl 2-hydroxy-6-methoxy-4-methylbenzoate (methyl mono-O-methyl-p-orsellinale) (m.p. 94-96°) with sodium methylsulfinyl-methide (SM) formed in situ. SM was obtained by action of sodium hydride (3 equiv) with DMSO (7 equiv) in benzene at 50° for 1 h. (78%) [5592]. 

Methyl 3-methoxysalicylate. Methyl 2-hydroxy-3-methoxybenzoate, 1545 Methyl mono-O-methyl-p-orsellinate. Methyl 2-hydroxy-6-methoxy-4-methylbenzoate, 1547... 

The synthesis of all the methyl mono-O-acetyl- - and - -D-xylo-pyranosides has been achieved by unimolecular acetylation of methyl mono-O-benzyl-D-xylopyranosides, followed by chromatographic fractionation and debenzylation. The three methyl di-O-acetyl-o -D-xylopyranosides were also obtained. Separation by liquid chromatography of the mixtures obtained by acetylation of a tri-O-methyl fraction from partial methylation of methyl ot-D-glucopyranoside gave all possible mono-O-acetyl-tri-O-methyl glycosides. Acetylation of D-xylose with acetic anhydride in... 

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