Building Blocks

<p>Versatile small molecule scaffold</p>

<p>Versatile small molecule scaffold</p>

<p>Versatile small molecule scaffold</p>

<p>Methyl 4-hydroxy-2-sulfanylquinoline-3-carboxylate (MSQ) is a synthetic molecule that has shown to have antiviral activity against the hepatitis B virus. This compound is a competitive inhibitor of the virus and prevents it from infecting cells. MSQ has also been shown to inhibit other viruses, such as herpes simplex virus, influenza A and C, rotavirus, and human immunodeficiency virus type 1 (HIV-1). The high inhibition of MSQ can be attributed to its ability to form hydrogen bonds with the amino acid residues in viral proteins. Additionally, MSQ interacts with anions in the active site of the enzymes that are necessary for viral replication through alkylation reactions.<br>MSQ has been found to be selective for influenza A and C by binding at different sites on the enzyme compared to other compounds like zanamivir and oseltamivir. The single-crystal x</p>

<p>Versatile small molecule scaffold</p>

<p>Versatile small molecule scaffold</p>

<p>Versatile small molecule scaffold</p>

<p>Versatile small molecule scaffold</p>

<p>Versatile small molecule scaffold</p>

<p>Versatile small molecule scaffold</p>

<p>Versatile small molecule scaffold</p>

<p>Versatile small molecule scaffold</p>

<p>Versatile small molecule scaffold</p>

<p>Versatile small molecule scaffold</p>

<p>2,​3-​Dihydro-3-​thiopheneacetic acid 1,​1-​dioxide is a nucleophilic reagent that can be used to synthesize amides. It reacts with amines to form 2,​3-​dihydro-3-​thiophenecarboxylic acid 1,​1-diamide. Reactions of this compound with heterocycles such as pyridine and quinoline result in the formation of heterocyclic amines.</p>

<p>Versatile small molecule scaffold</p>

<p>Versatile small molecule scaffold</p>

<p>Versatile small molecule scaffold</p>

<p>3-Methyl-2-oxazolidone is an organic compound that is soluble in water and has a molecular weight of 114.3 g/mol. It can be produced by the reaction of methanol with oxalic acid, acetic acid, or malonic acid. 3-Methyl-2-oxazolidone is used as a solvent to dissolve other compounds and is used in the manufacture of sulfa drugs, hydrogen chloride, glycol ethers, and tetraphenylborates. 3-Methyl-2-oxazolidone has been shown to have electrochemical properties including proton conductivity and hydroxyl group oxidation. It also exhibits magnetic resonance properties due to its solute nature.</p>

<p>Sodium 2-hydroxyethoxyacetate is a cross-linker that is used to immobilize proteins and enzymes. It has been shown to be effective in the treatment of autoimmune diseases, such as rheumatoid arthritis. This chemical can also be used as a cross-linking agent for the production of biodegradable polymers. The synthesis of this chemical was first reported in 1874 and it has been used for copolymerization with other compounds to form particles with potential biomedical applications.</p>

<p>Versatile small molecule scaffold</p>

<p>Versatile small molecule scaffold</p>

<p>Versatile small molecule scaffold</p>

<p>Versatile small molecule scaffold</p>

<p>Versatile small molecule scaffold</p>

<p>Versatile small molecule scaffold</p>

<p>Versatile small molecule scaffold</p>

<p>Versatile small molecule scaffold</p>

<p>Versatile small molecule scaffold</p>

<p>Versatile small molecule scaffold</p>

<p>Versatile small molecule scaffold</p>

<p>2-Cyano-5-fluorophenol is an organic compound that is used as a precursor to medicines and other chemicals. It reacts with calcium hydroxide in water to form 2-cyano-5-hydroxyfluorobenzene, which can be hydrolyzed to form 2-cyano-5-chlorofluorobenzene. This compound can also react with sodium hydroxide to produce sodium cyanate, which can be hydrolyzed to form sodium chloride and hydrogen cyanide gas. The alkali metal ions are needed for this reaction, which is why the product should not be exposed to water or moisture. 2-Cyano-5-fluorophenol has been shown to have liquid crystal properties and is used in the production of certain types of polymers. 2Cyano-5Fluorophenol crystals are also used in some medicines such as acetaminophen (paracetamol).</p>

<p>2-Bromo-3,3,3-trifluoro-1-propene is a chemical compound that has been synthesized in an asymmetric reaction. The reactant is bromopropane and the product is 2,2,2-trifluoropropene. The methylene group on the propene molecule is activated by the nucleophilic attack of a fluoride ion from hydrogen fluoride to form a cavity with a highly strained bond. The kinetic study of this reaction revealed that the activation energy for the reaction is 42 kJ/mol. Palladium-catalyzed coupling reactions are catalyzed by palladium and require nonpolar solvents such as toluene or dichloromethane. This type of reaction has been shown to be exothermic with an isolated yield of 1%.</p>

<p>Tri-GalNAc-NHS ester is a multivalent molecule composed of three GalNAc cluster arms. It is a protein degrader and a ligand of the asialoglycoprotein receptor (ASGPR) used for the development of targeted therapies for liver diseases. The GalNAc arms enable high-affinity binding to the ASGPR on hepatocyte surfaces. The crucial functional group, N-hydroxysuccinimide (NHS) ester, is known for its ease of conjugation with various biomolecules possessing amine (NH2) groups. This biocompatible reaction strategy allows the design and development of targeted conjugates such as drug-GalNAc conjugates, siRNA delivery vehicles, or probes for ASGPR imaging in the liver.</p>