scholarly journals Ribose conversion with amino acids into pyrraline platform chemicals – expeditious synthesis of diverse pyrrole-fused alkaloid compounds

RSC Advances ◽  
2021 ◽  
Vol 11 (50) ◽  
pp. 31511-31525
Author(s):  
Soohyeon Cho ◽  
Lina Gu ◽  
Ik Joon IN ◽  
Bo Wu ◽  
Taehoon Lee ◽  
...  
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Methyl Esters ◽  
One Pot ◽  
Platform Chemicals ◽  
Acid Methyl ◽  
Amino Acid Methyl Esters

One-pot conversion of sustainable d-ribose with l-amino acid, methyl esters produced pyrrole-2-carbaldehydes 5 in reasonable yields (32–63%) under pressurized conditions of 2.5 atm at 80 °C.

Multifunctional lubricant additives derived from natural amino acids and methyl oleate

RSC Advances ◽  
2015 ◽  
Vol 5 (95) ◽  
pp. 77538-77544 ◽  
Author(s):  
Arukali Sammaiah ◽  
Korlipara V. Padmaja ◽  
Shiva Shanker Kaki ◽  
Rachapudi B. N. Prasad
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Methyl Oleate ◽  
Thioglycolic Acid ◽  
Methyl Esters ◽  
Lubricant Additives ◽  
Acid Methyl ◽  
Multifunctional Additives ◽  
Natural Amino Acids ◽  
Amino Acid Methyl Esters

Novel multifunctional additives were synthesized from methyl oleate via thioglycolic acid addition followed by condensation with different amino acid methyl esters.

One-pot synthesis of 4-arylidene imidazolin-5-ones by reaction of amino acid esters with isocyanates and α-bromoketones

2019 ◽  
Vol 17 (11) ◽  
pp. 3040-3047
Author(s):  
Jia-Yun Haung ◽  
Indrajeet J. Barve ◽  
Chung-Ming Sun
Keyword(s):  
Amino Acid ◽  
Multicomponent Reaction ◽  
Methyl Esters ◽  
Amino Acid Esters ◽  
One Pot ◽  
One Pot Synthesis ◽  
Acid Methyl ◽  
Acid Esters ◽  
Amino Acid Methyl Esters

A one-pot multicomponent reaction for assembling substituted 4-arylidene imidazolin-5-ones from l-amino acid methyl esters, iso-, isothio- or isoselenocyanates, and α-bromoketones has been discovered.

“One-Pot” Methylation ofN-Nosyl-α-amino Acid Methyl Esters with Diazomethane and Their Coupling To PrepareN-Methyl Dipeptides

2003 ◽  
Vol 68 (19) ◽  
pp. 7416-7421 ◽  
Author(s):  
Maria Luisa Di Gioia ◽  
Antonella Leggio ◽  
Adolfo Le Pera ◽  
Angelo Liguori ◽  
Anna Napoli ◽  
...  
Keyword(s):  
Amino Acid ◽  
Methyl Esters ◽  
One Pot ◽  
Acid Methyl ◽  
Amino Acid Methyl Esters

scholarly journals Responses of cultured cardiac myocytes to lysosomotropic compounds and methylated amino acids

1985 ◽  
Vol 74 (1) ◽  
pp. 119-135
Author(s):  
R.S. Decker ◽  
M.L. Decker ◽  
V. Thomas ◽  
J.W. Fuseler
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Methyl Ester ◽  
Acridine Orange ◽  
Cardiac Myocytes ◽  
Methyl Esters ◽  
Acid Proteinase ◽  
Weak Bases ◽  
Acid Methyl ◽  
Amino Acid Methyl Esters

Cardiac myocytes whose lysosomes had been pre-labelled with acridine orange were exposed to either L-amino acid methyl esters (L-leucine or methionine methyl ester) or to ‘lysosomotropic’ weak bases (chloroquine, methylamine, and NH4Cl) for 1 h. Both types of interventions dilated lysosomes equally and inhibited proteolysis to varying degrees. The weak bases produced no apparent alterations in the acridine orange staining, whereas the methylated amino acids induced a marked redistribution of the fluorescent dye from lysosomes into the myoplasm, suggesting that they may have provoked a change in lysosomal membrane permeability. A brief exposure to weak bases failed to enhance acid proteinase secretion into the culture medium but apparently inactivated cellular cathepsin B activity. In contrast, methylated amino acids induced no alterations in acid proteinase activity or the cellular distribution of the two proteolytic enzymes. Lastly, weak bases markedly elevated intralysosomal pH as measured with fluorescein dextran, while only modest rises were observed after amino acid methyl ester treatment. The present observations imply that amino acid methyl esters represent a new class of reagents with actions distinctly different from those of chloroquine and NH4Cl, and they may provide a unique and valuable means of studying secondary lysosomal function in cell culture.

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