Building Blocks

<p>3-(Hydroxymethyl)cyclobutan-1-one is a synthetic piperazine derivative that has been shown to have antitumor and antimycobacterial activities. It is a selective inhibitor of the enzyme purine nucleoside phosphorylase (PNP), which catalyzes the conversion of inosine monophosphate (IMP) to xanthosine monophosphate (XMP). This inhibition results in an accumulation of IMP and deoxyinosine monophosphate (dIMP) in tumor cells. 3-(Hydroxymethyl)cyclobutan-1-one also inhibits Mycobacterium tuberculosis, but not other bacteria such as Escherichia coli or Staphylococcus aureus. The product is synthetically produced by reacting cyclobutanone with hydroxylamine.</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>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>Versatile small molecule scaffold</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>Versatile small molecule scaffold</p>

<p>Versatile small molecule scaffold</p>

<p>Versatile small molecule scaffold</p>

<p>1-(Pyrrolidin-2-ylmethyl)pyrrolidine is a respiratory agent that is soluble in ether and deoxygenated solvents. It has been shown to be effective for the treatment of respiratory problems, such as bronchitis, asthma, and other lung diseases. 1-(Pyrrolidin-2-ylmethyl)pyrrolidine is also used as a solvent for dyes, oils, and other organic substances.</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>Dicyclohexylmethanol is a trifunctional compound that contains a hydroxyl group, and can be used as a hydrogen bond donor or acceptor. The chemical structure of dicyclohexylmethanol can be seen in the figure below. Dicyclohexylmethanol has been used for sample preparation for hydrogen chloride gas. It has also been used to determine the concentration of blood ethanol levels and to measure blood pH in humans. Dicyclohexylmethanol is an important reactant in asymmetric synthesis reactions due to its ability to form hydrogen bonds with both reactants.</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>Dichloroacetic acid methyl ester (DCA) is a metabolic disorder agent that belongs to the group of detergent compositions. It is an important intermediate in the synthesis of sodium salts and hiv infection inhibitors, such as hydrochloric acid and covalent linkages. DCA reacts with water molecules to form hydroxyl groups and then reacts with metal carbonyls to produce anhydrous sodium. This product also reacts with fatty acids to produce alcohol residue and can be used in the reaction solution. The product has a pyrazole ring with a hydroxyl group at one end and an alcohol residue at the other end.</p>

<p>Versatile small molecule scaffold</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>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>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>