97935-71-2

Upstream product

• 59-67-6 nicotinic acid 
• 100-39-0 benzyl bromide 

Downstream Products

• 39713-14-9 1-benzyl-1,4-dihydropyridine-3-carboxylic acid 

Relevant academic research and scientific papers

Bio-proton coupled semiconductor/metal-complex hybrid photoelectrocatalytic interface for efficient CO2 reduction

Aimed at high-efficiency biomimetic CO2 photoelectrochemical conversion, a bio-proton coupling metal-complex/semiconductor hybrid photoelectrocatalytic interface (Ru-BNAH/TiO2/Cu2O) was constructed by covalently modifying an in situ proton-transfer functionized molecular catalyst (Ru-BNAH) on the surface of a TiO2/Cu2O composite semiconductor substrate electrode. Due to the excellent proton coupling of the bio-proton carrier, the light current density in a CO2 atmosphere of the prepared Ru-BNAH/TiO2/Cu2O photoelectrocatalytic interface was twice as high as that without a proton carrier under the same conditions. Simultaneously, based on the excellent photosensitivity of the metal oxide substrate, the photogenerated electrons could rapidly transfer to the molecular catalyst for efficient CO2 reduction in a water medium. After 8 h irradiation at -0.9 V potential, the Ru-BNAH/TiO2/Cu2O photoelectrocatalytic interface produced 409.5 μmol formic acid, which was 2.44 times more than that without a proton transfer carrier. In addition, the in situ UV-visible absorption spectra and in situ Raman spectra indicated that the proton transport carrier supplied protons during CO2 reduction. Moreover, the generation of HCOO- in CO2-saturated D2O medium confirmed the proton (H) originated from the proton transfer carrier rather than the solvent (D2O).

COMPOUNDS FOR PROMOTING FOLLICLE MATURATION

Some analogues (eg. 3-carbamoyl-1-(tetrahydro-2H-pyran-4-yl)pyridin-1-ium, 3- carboxy-1-isopropylpyridin-1-ium, 1-benzyl-3-carbamoylpyridin-1-ium, 3-carbamoyl-1- methylpyridin-1-ium and cyclopamine) are disclosed to treat female infertility as the compounds increase the percentage of primary follicles relative to primordial follicles compared to control samples.

Biocatalytic C=C Bond Reduction through Carbon Nanodot-Sensitized Regeneration of NADH Analogues

Light-driven activation of redox enzymes is an emerging route for sustainable chemical synthesis. Among redox enzymes, the family of Old Yellow Enzyme (OYE) dependent on the nicotinamide adenine dinucleotide cofactor (NADH) catalyzes the stereoselective reduction of α,β-unsaturated hydrocarbons. Here, we report OYE-catalyzed asymmetric hydrogenation through light-driven regeneration of NADH and its analogues (mNADHs) by N-doped carbon nanodots (N-CDs), a zero-dimensional photocatalyst. Our spectroscopic and photoelectrochemical analyses verified the transfer of photo-induced electrons from N-CDs to an organometallic electron mediator (M) for highly regioselective regeneration of cofactors. Light triggered the reduction of NAD+ and mNAD+s with the cooperation of N-CDs and M, and the reduction behaviors of cofactors were dependent on their own reduction peak potentials. The regenerated cofactors subsequently delivered hydrides to OYE for stereoselective conversions of a broad range of substrates with excellent biocatalytic efficiencies.

THERAPEUTICS

The present invention relates to the use of a compound of formula (I); wherein: R1 comprises a carbonyl group and R2 is a hydrocarbyl group; optionally wherein said ring is further substituted; or a pharmaceutically acceptable salt thereof; in the manufacture of a medicament for use in one or more of: modulating the release of intracellular calcium from a store controlled by nicotinic acid adenine dinucleotide phosphate; modulating calcium spikes in mammalian cells; treating diseases in one or more of brain, heart, pancreatic cells (e.g. pancreatic acinar and pancreatic beta cells), immune cells, T-cells, haemopoietic cells including phagocytes; treating diseases in one or more of brain, heart, pancreatic cells (e.g. pancreatic acinar and pancreatic beta cells), immune cells, T-cells, haemopoietic cells including phagocytes by modulating the release of intracellular calcium from a store controlled by nicotinic acid adenine dinucleotide phosphate; treating diseases in one or more of brain, heart, and T-cells by modulating calcium spikes in mammalian cells.

Synthesis, in vitro and in vivo Evaluation of a Delivery System for Targeting Anticancer Drugs to the Brain

A 1,4-dihydropyridine ? pyridinium salt type redox system is described as a general and flexible method for site-specific and sustained delivery of drugs to the brain. This concept was used in the present investigation as a model to deliver an alkylating antitumor agent into the brain. A bis-(chloroethyl)amine drug was hooked to 1,4-dihy-dropyridine chemical delivery system (CDS) through an amide linkage. Five new target compounds (23-27) of the 1,4-dihydropyridine CDS type were synthesized through the reduction of five new pyridinium quaternary intermediates (18-22). The synthesized 1,4-dihydropyridines were subjected to various chemical and biological investigations to evaluate their ability to cross the blood-brain barrier (BBB), and to be oxidized biologically into their corresponding quaternary compounds. The in vitro oxidation studies showed that 1-benzyl-3-{N-[2-bis(2-chloroethyl)aminoethyl]-carbamoyl}-1,4-dihydropyridine (23) and 1-(4-nitrobenzyl)-3-{N-[2-bis(2-chloroethyl)aminoethyl]carbamoyl}-1, 4-dihydropyridine (27) could be oxidized into their corresponding quaternary compounds 18 and 22, respectively, at an adequate rate, which ensure the release of the carried anticancer drug. The in vivo studies showed that compound 23 was able to cross the BBB at detectable concentrations. On the other hand, the in vitro alkylation activity studies revealed that 1-(4-nitrobenzyl)-3-{N-[2-bis(2-chloroethyl)aminoethyl]carbamoyl}pyridinium bromide (22) is an alkylating agent with activity comparable to the known drug chlorambucil.

Investigations of Quaternary Pyridinium Salts, XVII. Cyclopeptide-like Substances from Salts of the Amides of Nicotinoylamino Acids

The amides of niconinoylamino acids were prepared and alkylated to the quaternary salts 1f-n.The α-amino acid moiety in 1 is S configurated.The salt 1 cyclise under the influence of base to give the cyclopeptide-like substances 4,5 and 7, with seven- or fourteen (sixteen, eighteen-) membered rings, respectively. - Key words: Pyridinium Salts, Insertion Reaction, Cyclopeptides