Methyl Group
BBr3-Assisted Cleavage of Most Ethers Does Not Follow the Commonly Assumed Mechanism
... unhindered methyl group in the adducts of allyl methyl ether (2c), benzyl methyl ether (2b) and activated primary alkyl ethers (2e and ...benzyl methyl ether adduct (2b), Br - attack to ...
83
J. Braz. Chem. Soc. vol.22 número6
... The biotransformation reactions of OMZ that were monitored in this work involves the aliphatic hydroxylation of the methyl group of the aromatic ring yielding the forma[r] ...
10
Synthesis of Coenzyme Q<sub>10</sub>
... trans methyl of isoprene unit as a prelude to the expansion of the side chain to decaprenyl group using ...trans methyl group of isoprenyl side chain and subsequent allylic bromination yielded ...
7
J. Braz. Chem. Soc. vol.24 número12
... spectroscopy) and HMQC) spectra of the hydroxylactone 4 that was obtained microbiologically and bromolactone 2 allowed for the identification of differences between both molecules. The coupling constants of H-1 with H-2 ...
15
J. Braz. Chem. Soc. vol.13 número3
... the methyl groups attached to a quaternary carbon and two signals at δ ...the methyl groups attached to a methine ...additional methyl group, attached to a sp 2 carbon at δ ...
3
J. Braz. Chem. Soc. vol.17 número5
... ketone group was attributed to C-9, which presented long range correlation in the HMBC experiment with the hydrogen at δ ...hydroxyl group is located at C-7. The typical signal for the methyl ...
6
J. Braz. Chem. Soc. vol.12 número4
... On the other hand, in the ring contraction of the decalone 5, which bears a methyl group at C5, an inversion in the regiochemistry of the reaction was observed, when compared to the other cis-fused ...
4
Zhiping Che, Yuee Tian, Shengming Liu, Mei Hu, Genqiang Chen
... a methyl group was introduced at the C-6 position of the indolyl ring, the anti-HIV-1activities of the corresponding compounds were more pronounced than those of the compounds carrying a hydrogen ...
7
J. Braz. Chem. Soc. vol.20 número3
... aromatic moiety were further confirmed by comparison to those reported for known benzoic acids analogues. The isoprenyl side chain signals were determined from COSY and HETCOR spectra. Thus, the methylene protons H-1´at ...
8
J. Braz. Chem. Soc. vol.12 número2
... 10 methyl group α-oriented (path ...11 methyl group (613 ...10 methyl group β-oriented (path ...monophyletic group represented by two large groups: Actinidiaceae splits ...
10
Enzymatic synthesis of RNAs capped with nucleotide analogues reveals the molecular basis for substrate selectivity of RNA capping enzyme: impacts on RNA metabolism.
... N7-methyl group of the classical N7- methyl guanosine cap is not always indispensable for binding to eIF4E and subsequently for translation when compensatory modifications are present on the capped ...
12
Biochemical and Computational Analysis of the Substrate Specificities of Cfr and RlmN Methyltransferases.
... a methyl donor and the other as a supporter of a radical ...The methyl group is then trans- ferred to A2503 of the 23S rRNA via a transitory crosslinking where the radical helps the cleav- age of an ...
14
J. Braz. Chem. Soc. vol.17 número5
... allylic methyl group lose a molecule of acetone via a fragmentation reaction that leads to isomeric secondary allylic alcohols as major products, together with their corresponding acetylated ...allylic ...
8
J. Braz. Chem. Soc. vol.21 número11
... a methyl group in the aromatic ring, induce moderate cytotoxicity in the wild type yeast strain in concentrations above 10 ...methoxyl group in the aromatic ring was the most cytotoxic compound, ...
6
Modeling a new water channel that allows SET9 to dimethylate p53.
... the methyl group recognized by SET domain of lysine methyltransferases ...the methyl group to shift and project into the solvent pocket ...
9
J. Braz. Chem. Soc. vol.25 número4
... terminal methyl group of the alkyl chain of rodriguesin ...hydroxamate group was also present on the diketopiperazine moiety of a rodriguesic acid ...Two methyl esters of the rodriguesic acids ...
19
Airbus group SE
... Airbus Group has a wide portfolio of investments. 3 The Group is undergoing a strategic review resulting in divestments in the Defence & Space business ...
32
J. Braz. Chem. Soc. vol.8 número5
... The structure of 1 (Fig. 2) reveals discrete diiron com- plex anions and ammonium counterions. The iron atoms in the anion of 1 are in a pseudo-octahedral environment in which the two terminal phenolate oxygen atoms ...
4
Morinda citrifolia L. (Rubiaceae), commonly known as noni,
... octanoate and methyl 4E-decenoate, while octanoic acid and decanoic acid concentrations significantly decreased. These changes probably indicate that esterification occurs during maturation, in a similar way as in ...
5
Braz. J. Chem. Eng. vol.32 número3
... The thermal analysis of SMES surfactant is illus- trated in Figure 4. Three mass loss steps were ob- served. The first region, with a mass loss of 4.4% from ambient to 100 °C corresponds to the loss of weakly bonded ...
9