Building Blocks

<p>Versatile small molecule scaffold</p>

<p>Pyrazolo[1,5-a]pyridin-4-ol is a heteroaromatic compound that acts as an inhibitor of phosphodiesterase (PDE). It prevents the breakdown of cyclic nucleotides and thus leads to increased levels of cAMP and cGMP. Pyrazolo[1,5-a]pyridin-4-ol has been shown to have bronchodilatory activity in animal models. The drug also inhibits the production of inflammatory mediators such as prostaglandins by inhibiting cyclooxygenases. In addition, pyrazolo[1,5-a]pyridin-4-ol has been shown to be a potential PDE inhibitor replacement for the more commonly used PDE inhibitors such as sildenafil and tadalafil. However, due to its lack of stereochemistry and its bicyclic chemical structure, pyrazolo[1,5-a]</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>1-Benzothiophene-6-carboxaldehyde (BTA) is a heterocyclic compound that contains sulfur. It is a colorless liquid with a sweet odor. BTA is used in the manufacture of pesticides, pharmaceuticals, and other organic chemicals. It is also used as a building block in the synthesis of other compounds and has been shown to have anti-inflammatory properties.</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-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>Versatile small molecule scaffold</p>

<p>3-Methylbenzo[b]thiophene-2-carboxylic acid (MBTCA) is a heterocyclic compound that is an intermediate in the synthesis of 3-methylthiophene-2-carboxylic acid, a precursor to other drugs. MBTCA is an aerobic, nonpolar compound that has shown antimicrobial activity against some bacteria and fungi. It also has been shown to have practicality as a biomolecular probe for methyl groups in organic solvents. MBTCA can be synthesized by nitration of benzene in the presence of sulfur and sulfoxides. This reaction produces nitrobenzene, which can then be oxidized by potassium permanganate or hydrogen peroxide to produce MBTCA. The most common isomer of MBTCA is 2-(3,5-dimethoxybenzylidene)tetrahydrofuran, with three methyl groups on the</p>