Month: November 2022

Rothlingshofer, Manuel published the artcileNucleic Acid-Templated Energy Transfer Leading to a Photorelease Reaction and its Application to a System Displaying a Nonlinear Response, Formula: C39H35N5O8, the publication is Journal of the American Chemical Society (2011), 133(45), 18110-18113, database is CAplus and MEDLINE.

The photocleavage of a nitrobenzyl-type linker (NPPOC) at 405 nm wavelength was enabled by nucleic acid-templated energy transfer from a sensitizer (thioxanthenone) to the linker. This strategy was used to release profluorescent rhodamine, which facilitated monitoring of the reaction via fluorescence measurement in a nonoverlapping window with the sensitizer/photocleavage reaction. The rate acceleration of the templated reaction was greater than 20-fold over the background reaction. The templated reaction was used in conjunction with strand displacement to design four-component systems that responded to an analyte (DNA). Programming a specific hierarchical relationship among the four components enabled the design of a system that responded first pos. and then neg. to increasing levels of an analyte.

Journal of the American Chemical Society published new progress about 186046-81-1. 186046-81-1 belongs to pyrimidines, auxiliary class Pyrimidine,Carboxylic acid,Amine,Benzene,Amide,Others,PNA,, name is 2-(N-(2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)ethyl)-2-(4-(((benzhydryloxy)carbonyl)amino)-2-oxopyrimidin-1(2H)-yl)acetamido)acetic acid, and the molecular formula is C39H35N5O8, Formula: C39H35N5O8.

Referemce:
https://pubchem.ncbi.nlm.nih.gov/compound/Pyrimidine,
Pyrimidine – Wikipedia

Rothlingshofer, Manuel published the artcileNucleic Acid-Templated Energy Transfer Leading to a Photorelease Reaction and its Application to a System Displaying a Nonlinear Response, Application In Synthesis of 169396-92-3, the publication is Journal of the American Chemical Society (2011), 133(45), 18110-18113, database is CAplus and MEDLINE.

The photocleavage of a nitrobenzyl-type linker (NPPOC) at 405 nm wavelength was enabled by nucleic acid-templated energy transfer from a sensitizer (thioxanthenone) to the linker. This strategy was used to release profluorescent rhodamine, which facilitated monitoring of the reaction via fluorescence measurement in a nonoverlapping window with the sensitizer/photocleavage reaction. The rate acceleration of the templated reaction was greater than 20-fold over the background reaction. The templated reaction was used in conjunction with strand displacement to design four-component systems that responded to an analyte (DNA). Programming a specific hierarchical relationship among the four components enabled the design of a system that responded first pos. and then neg. to increasing levels of an analyte.

Journal of the American Chemical Society published new progress about 169396-92-3. 169396-92-3 belongs to pyrimidines, auxiliary class Pyrimidine,Carboxylic acid,Amine,Amide,Others,PNA, name is 2-(N-(2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)ethyl)-2-(5-methyl-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)acetamido)acetic acid, and the molecular formula is C26H26N4O7, Application In Synthesis of 169396-92-3.

Referemce:
https://pubchem.ncbi.nlm.nih.gov/compound/Pyrimidine,
Pyrimidine – Wikipedia

Pianowski, Zbigniew published the artcileImaging of mRNA in Live Cells Using Nucleic Acid-Templated Reduction of Azidorhodamine Probes, Name: 2-(4-((tert-Butoxycarbonyl)amino)-2-oxopyrimidin-1(2H)-yl)acetic acid, the publication is Journal of the American Chemical Society (2009), 131(18), 6492-6497, database is CAplus and MEDLINE.

Nucleic acid-templated reactions leading to a fluorescent product represent an attractive strategy for the detection and imaging of cellular nucleic acids. Herein we report the use of a Staudinger reaction to promote the reduction of profluorescent azidorhodamine. The use of two cell-permeable GPNA probes, one labeled with the profluorescent azidorhodamine and the other with trialkylphosphine, enabled the detection of the mRNA encoding O-6-methylguanine-DNA methyltransferase in intact cells.

Journal of the American Chemical Society published new progress about 172405-16-2. 172405-16-2 belongs to pyrimidines, auxiliary class Pyrimidine,Carboxylic acid,Amine,Amide, name is 2-(4-((tert-Butoxycarbonyl)amino)-2-oxopyrimidin-1(2H)-yl)acetic acid, and the molecular formula is C11H15N3O5, Name: 2-(4-((tert-Butoxycarbonyl)amino)-2-oxopyrimidin-1(2H)-yl)acetic acid.

Referemce:
https://pubchem.ncbi.nlm.nih.gov/compound/Pyrimidine,
Pyrimidine – Wikipedia

Huang, Kuo-Ting published the artcileCombinatorial Self-Assembly of Glycan Fragments into Microarrays, Synthetic Route of 186046-81-1, the publication is ChemBioChem (2011), 12(1), 56-60, database is CAplus and MEDLINE.

We have demonstrated that complex glycan arrays can be accessed through the combinatorial self assembly of PNA-encoded carbohydrate fragments. Although the use of DNA microarrays to sort carbohydrate-DNA conjugates had previously been reported, previous efforts were restricted to monosaccharides and did not explore a broad range of glycan structures, nor their combinatorial assembly. The cooperativity of the fragments in their interaction with carbohydrate-binding proteins was demonstrated with two different lectins. The binding profile showed the strongest interaction for discrete combinations of two fragments. Importantly, the PNA-tagged glycans can be readily prepared from native oligosaccharides obtained from natural or com. sources by conversion of the anomeric position into a thiol on a mg scale by a two- to three-step process. The simplicity of the protocols described should make glycan arrays more broadly accessible. Immobilization of glycans by hybridization offers a reliable approach by which to obtain a homogeneous distribution of ligands within a microarray spot and allows the use of microarrays with higher d. than accessible by contact printing, which is currently the standard practice. Last but not least, combinatorial self assembly of fragments on DNA microarrays should be broadly applicable beyond the glycan fragments described here.

ChemBioChem published new progress about 186046-81-1. 186046-81-1 belongs to pyrimidines, auxiliary class Pyrimidine,Carboxylic acid,Amine,Benzene,Amide,Others,PNA,, name is 2-(N-(2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)ethyl)-2-(4-(((benzhydryloxy)carbonyl)amino)-2-oxopyrimidin-1(2H)-yl)acetamido)acetic acid, and the molecular formula is C39H35N5O8, Synthetic Route of 186046-81-1.

Referemce:
https://pubchem.ncbi.nlm.nih.gov/compound/Pyrimidine,
Pyrimidine – Wikipedia

Huang, Kuo-Ting published the artcileCombinatorial Self-Assembly of Glycan Fragments into Microarrays, COA of Formula: C26H26N4O7, the publication is ChemBioChem (2011), 12(1), 56-60, database is CAplus and MEDLINE.

We have demonstrated that complex glycan arrays can be accessed through the combinatorial self assembly of PNA-encoded carbohydrate fragments. Although the use of DNA microarrays to sort carbohydrate-DNA conjugates had previously been reported, previous efforts were restricted to monosaccharides and did not explore a broad range of glycan structures, nor their combinatorial assembly. The cooperativity of the fragments in their interaction with carbohydrate-binding proteins was demonstrated with two different lectins. The binding profile showed the strongest interaction for discrete combinations of two fragments. Importantly, the PNA-tagged glycans can be readily prepared from native oligosaccharides obtained from natural or com. sources by conversion of the anomeric position into a thiol on a mg scale by a two- to three-step process. The simplicity of the protocols described should make glycan arrays more broadly accessible. Immobilization of glycans by hybridization offers a reliable approach by which to obtain a homogeneous distribution of ligands within a microarray spot and allows the use of microarrays with higher d. than accessible by contact printing, which is currently the standard practice. Last but not least, combinatorial self assembly of fragments on DNA microarrays should be broadly applicable beyond the glycan fragments described here.

ChemBioChem published new progress about 169396-92-3. 169396-92-3 belongs to pyrimidines, auxiliary class Pyrimidine,Carboxylic acid,Amine,Amide,Others,PNA, name is 2-(N-(2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)ethyl)-2-(5-methyl-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)acetamido)acetic acid, and the molecular formula is C26H26N4O7, COA of Formula: C26H26N4O7.

Referemce:
https://pubchem.ncbi.nlm.nih.gov/compound/Pyrimidine,
Pyrimidine – Wikipedia

El-Ghomari, K. published the artcileMetabolic N-oxygenation of 2,4-diamino-6-substituted pyrimidines, Synthetic Route of 74638-76-9, the publication is European Journal of Drug Metabolism and Pharmacokinetics (1987), 12(4), 253-8, database is CAplus and MEDLINE.

Biol. oxidation of 2,4-diamino-6-substituted pyrimidines was studied using hepatic microsomes from various mammalian species. The 3-N-oxides were formed with 6-pipeidino-, 6-diethylamino-, 6-methyl-, and 6-chloro-substituted 2,4-diaminopyrimidines: no evidence of 1-N-oxide formation was obtained. With the 6-hydroxy-, 6-amino-, and unsubstituted 2,4-diaminopyrimidines and melamine, no N-oxidative metabolite was detected. The differences in N-oxide formation is discussed in terms of the effect of substituents on tautomerism and electron distribution. The N-oxygenation was mediated via a cytochrome P 450-dependent system.

European Journal of Drug Metabolism and Pharmacokinetics published new progress about 74638-76-9. 74638-76-9 belongs to pyrimidines, auxiliary class Pyrimidine, name is 2,4-Diaminopyrimidine-3-oxide, and the molecular formula is C4H6N4O, Synthetic Route of 74638-76-9.

Referemce:
https://pubchem.ncbi.nlm.nih.gov/compound/Pyrimidine,
Pyrimidine – Wikipedia

Panciera, Michele published the artcileInduced α,γ-cyclic peptide rotodimer recognition by nucleobase scaffolds, Recommanded Product: 2-(4-((tert-Butoxycarbonyl)amino)-2-oxopyrimidin-1(2H)-yl)acetic acid, the publication is Peptide Science (Hoboken, NJ, United States) (2020), 112(1), e24132, database is CAplus.

The β-sheet-type structures derived from the stacking of α,γ-cyclic peptides to form peptides nanotubes can provide different topoisomers, nonequivalent cyclic peptide stacks generated by the relative rotation through the channel axis of one cyclic peptide with respect to the next component. This rotation generates a series of cyclic peptide dimers paired by the same type of hydrogen bond pattern but differentiated by the cross-strand side chain-side chain pairwise. The control of this peptide-peptide relative orientation in stacked supramol. aggregates is required for practical applications in material sciences, sensing, or biol. We propose the use of small oligonucleotides to control the prevalence of a particular dimer through the formation of specific hydrogen bonds between cyclic peptides bearing a nucleobase attached to a serine side chain with a complementary oligonucleotide (peptide nucleic acid).

Peptide Science (Hoboken, NJ, United States) published new progress about 172405-16-2. 172405-16-2 belongs to pyrimidines, auxiliary class Pyrimidine,Carboxylic acid,Amine,Amide, name is 2-(4-((tert-Butoxycarbonyl)amino)-2-oxopyrimidin-1(2H)-yl)acetic acid, and the molecular formula is C11H15N3O5, Recommanded Product: 2-(4-((tert-Butoxycarbonyl)amino)-2-oxopyrimidin-1(2H)-yl)acetic acid.

Referemce:
https://pubchem.ncbi.nlm.nih.gov/compound/Pyrimidine,
Pyrimidine – Wikipedia

Cruege, Francis published the artcileBasic properties of dimethylamino derivatives of pyridine and pyrimidine, Recommanded Product: N,N-Dimethylpyrimidin-4-amine, the publication is Bulletin de la Societe Chimique de France (1970), 3889-94, database is CAplus.

A correlation exists between the free enthalpy of complexation (with PhOH) and the intrinsic pKa of (dimethylamino)pyridines and -pyrimidines. 2-Dimethylamino isomers are the most basic compounds, and the steric hindrance effect of the 2-dimethylamino group is discussed.

Bulletin de la Societe Chimique de France published new progress about 31401-45-3. 31401-45-3 belongs to pyrimidines, auxiliary class Pyrimidine,Amine, name is N,N-Dimethylpyrimidin-4-amine, and the molecular formula is C6H9N3, Recommanded Product: N,N-Dimethylpyrimidin-4-amine.

Referemce:
https://pubchem.ncbi.nlm.nih.gov/compound/Pyrimidine,
Pyrimidine – Wikipedia

Agramunt, Jordi published the artcileInverse Electron-Demand Diels-Alder Bioconjugation Reactions Using 7-Oxanorbornenes as Dienophiles, Recommanded Product: 2-(N-(2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)ethyl)-2-(4-(((benzhydryloxy)carbonyl)amino)-2-oxopyrimidin-1(2H)-yl)acetamido)acetic acid, the publication is Journal of Organic Chemistry (2020), 85(10), 6593-6604, database is CAplus and MEDLINE.

Oligonucleotides, peptides, and peptide nucleic acids incorporating 7-oxanorbornene as a dienophile were reacted with tetrazines linked to either a peptide, D-biotin, BODIPY, or N-acetyl-D-galactosamine. The inverse electron-demand Diels-Alder (IEDDA) cycloaddition, which was performed overnight at 37°C, in all cases furnished the target conjugate in good yields. IEDDA reactions with 7-oxanorbornenes produce a lower number of stereoisomers than that of IEDDA cycloadditions with other dienophiles.

Journal of Organic Chemistry published new progress about 186046-81-1. 186046-81-1 belongs to pyrimidines, auxiliary class Pyrimidine,Carboxylic acid,Amine,Benzene,Amide,Others,PNA,, name is 2-(N-(2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)ethyl)-2-(4-(((benzhydryloxy)carbonyl)amino)-2-oxopyrimidin-1(2H)-yl)acetamido)acetic acid, and the molecular formula is C39H35N5O8, Recommanded Product: 2-(N-(2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)ethyl)-2-(4-(((benzhydryloxy)carbonyl)amino)-2-oxopyrimidin-1(2H)-yl)acetamido)acetic acid.

Referemce:
https://pubchem.ncbi.nlm.nih.gov/compound/Pyrimidine,
Pyrimidine – Wikipedia

Agramunt, Jordi published the artcileInverse Electron-Demand Diels-Alder Bioconjugation Reactions Using 7-Oxanorbornenes as Dienophiles, Formula: C26H26N4O7, the publication is Journal of Organic Chemistry (2020), 85(10), 6593-6604, database is CAplus and MEDLINE.

Oligonucleotides, peptides, and peptide nucleic acids incorporating 7-oxanorbornene as a dienophile were reacted with tetrazines linked to either a peptide, D-biotin, BODIPY, or N-acetyl-D-galactosamine. The inverse electron-demand Diels-Alder (IEDDA) cycloaddition, which was performed overnight at 37°C, in all cases furnished the target conjugate in good yields. IEDDA reactions with 7-oxanorbornenes produce a lower number of stereoisomers than that of IEDDA cycloadditions with other dienophiles.

Journal of Organic Chemistry published new progress about 169396-92-3. 169396-92-3 belongs to pyrimidines, auxiliary class Pyrimidine,Carboxylic acid,Amine,Amide,Others,PNA, name is 2-(N-(2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)ethyl)-2-(5-methyl-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)acetamido)acetic acid, and the molecular formula is C26H26N4O7, Formula: C26H26N4O7.

Referemce:
https://pubchem.ncbi.nlm.nih.gov/compound/Pyrimidine,
Pyrimidine – Wikipedia