Dimethyl sulfoxide (DMSO) is widely used as a solvent in organic synthesis and pharmacology because of its low cost, stability, non-toxicity. Multicomponent reactions are powerful synthetic tool for the rapid efficient construction complicated molecular frameworks. In this communication, multicomponent transformation salicylaldehyde, malononitrile dimer, dimethyl malonate DMSO at room temperatu...

A very short and efficient synthesis of the important drug candidate telaprevir, featuring a biocatalytic desymmetrization and two multicomponent reactions as the key steps, is presented. The classical issue of lack of stereoselectivity in Ugi- and Passerini-type reactions is circumvented. The atom economic and convergent nature of the synthetic strategy require only very limited use of protect...

The synthesis of six cyclic depsipeptoids inspired by the natural depsipeptide sansalvamide A is described. An efficient and fast synthetic strategy was developed using a combination of consecutive isocyanide-based multicomponent reactions (Ugi and Passerini reactions). This methodology can be used to access a variety of cyclic oligodepsipeptoids.

Interest in multicomponent reactions (MCRs) has surged during the past two decades as interest in the efficient synthesis of small molecule libraries has gained prominence. MCRs fill an important niche in library synthesis by providing direct access to library compounds and by serving as starting points for Diversity-Oriented Synthesis (DOS). Recent advances in the area of MCR chemistry have in...

a facile co-precipitation method for the synthesis of well-dispersed ndfeo3 nanocrystals is developed in the presence of octanoic acid as surfactant. co-precipitation can produce fine, high-purity, stoichiometric particles of single and multicomponent metal oxides. the product is characterized by fourier transform infrared spectroscopy (ft-ir), x-ray diffraction (xrd), scanning electron microsc...

A green and efficient one pot, three component protocol for synthesis of naphthopyranopyrimidines by cyclocondensation of β-naphthol, aldehyde, and 6-amino-1,3-dimethyluracil using L-proline as a beneficial catalyst with high catalytic activity under solvent-free conditions at 100 °C is described. In this study, several types of aromatic aldehyde, containing electron-withdrawing groups as well ...

The use of single crystal electrodes in electrocatalysis have allowed researchers to understand some of the elementary steps in different reactions and to establish some relationships between the activity of an electrocatalyst and its surface structure. But the precise identification of the particular type of crystallographic site on a nanoparticle sized electrocatalyst where the reaction takes...

The electrocatalytic properties of nanoparticles depend on their size, shape and composition. These properties are typically probed by measuring the total electrocatalytic reaction current of a large number of nanoparticles, but this approach is time-consuming and can only measure the average catalytic activity of the nanoparticles under study. However, the identification of new catalysts requi...

A highly convergent, stereocontrolled total synthesis of the architecturally complex marine sponge metabolite (-)-enigmazole A has been achieved. Highlights include an unprecedented late-stage large-fragment Petasis-Ferrier union/rearrangement, a multicomponent Type I Anion Relay Chemistry (ARC) tactic, and a dithiane-epoxide union in conjunction with an oxazole-directed stereoselective reduction.

Herein we report on the multicomponent synthesis of a novel imidazole-based compound, able to act efficiently as a minimalist β-strand mimic. Biological evaluation proved its ability to impair the LDLR-PCSK9 protein-protein interaction, disclosing it as the first small molecule exerting a PCSK9-mediated hypocholesterolemic effect.