Building Blocks

<p>4-Acetyl-1H-pyrrole-2-carboxaldehyde is a molecule that can be used to regulate proton transfer. It has been shown to have a photophysical effect, in which it absorbs light and transfers the energy to a nearby acceptor. 4-Acetyl-1H-pyrrole-2-carboxaldehyde also facilitates the transfer of protons from one compound to another. The thermodynamics of this reaction are dependent on substituent effects as well as pyrazole ring geometry. 4-Acetyl-1H-pyrrole-2-carboxaldehyde is able to undergo Friedel–Crafts reactions, where it forms an ethoxycarbonyl group by attacking a double bond with carbon monoxide and hydrogen chloride. This can be done in two ways: the dihedral or syn orientation, which results in different products.</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>Rac-1-phenylcyclobutane-1-carboxylic acid is a carbanion that contains a cyclopropylcarbinyl group. It can be prepared by the reaction of ketones with lithium diisopropylamide. Rac-1-phenylcyclobutane-1-carboxylic acid is used as an intermediate in the synthesis of drugs such as ampicillin and erythromycin.</p>

<p>Versatile small molecule scaffold</p>

<p>3-Oxo-1-cyclohexanecarboxylic acid is a structural isomer of cyclohexanecarboxylic acid. It is a white crystalline solid that can react with monoxide to form 3-oxocyclohexane carboxylic acid or with chlorine to form 3-chlorocyclohexane carboxylic acid. The reaction rate and regioselectivity are dependent on the catalyst used. With catalytic amounts of copper and air, 3-oxocyclohexane carboxylic acid is formed preferentially, but when using an excess of copper, the chlorinated product is obtained in higher yields. This reaction occurs because the orthoformic carbon atom has a greater electron density than the meta formic carbon atom. The reaction mechanism begins with oxidation of the metal to form a metal oxide which then reacts with CO to produce CO2 and H2O.</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>

Versatile small molecule scaffold

<p>Methyl 5-bromomethyl-2-chlorobenzoate is a cytotoxic agent that inhibits tumor growth. It is a potent inhibitor of the enzyme PARP-1, which is involved in DNA repair, and inhibits tumor growth in vivo. Methyl 5-bromomethyl-2-chlorobenzoate is also able to complex with temozolomide and potentiate its antitumor activity. This drug has been shown to inhibit tumor growth in xenograft models, including xenografts of human non-small cell lung cancer cells transplanted into mice.</p>

<p>Versatile small molecule scaffold</p>

<p>Versatile small molecule scaffold</p>