An efficient and diastereoselective synthesis of hydrazino amides via a novel one-pot three-component reaction

The vital use of isocyanide-based multicomponent reactions (MCR) in chemical synthesis

Multicomponent (MCRs) reactions are classified as one-pot reaction where more than two starting materials are employed to form a single product that contains the building blocks of the starting components. MCRs are considered a convenient approach in synthetic chemistry and have many advantages over the traditional one or two-component reaction, by reducing the number of sequential multiple steps required and often producing better yields. This chapter dissects the use of isocyanide-based MCRs and the elegant chemistry that they offer to build useful scaffolds in the chemical synthetic field. In addition MCRs are considered as one of the recognisable options for increasing “greenness” during the synthesis of pharmaceutical and industrial products.

Synthesis of functionalized chromones through sequential reactions in aqueous media

An efficient sequential four-component reaction of chromone carbaldehydes, Meldrum's acid, 4-hydroxyl coumarin or 6-methyl-4-hydroxyl-pyrone and primary alcohols is reported which leads to 5a-i in aqueous media. Replacing the primary alcohol with isopropyl alcohol and tert-butyl alcohol results in different products 10 and 11. The environmentally friendly features, good to high yields and easy work-up are advantages of this approach.

Synthesis of novel peptides through Ugi-ligation and their anti-cancer activities

Proline-rich heptapeptide was synthesized and its structure was modified through Ugi-ligation. The desired pseudopeptides were separated as diastereomers and their anti-cancer activities were investigated. Their in vitro anti-cancer activities were investigated by treating HL60 (leukemia cancer cells), MCF7 (breast cancer cells) and A549 (lung cancer cells) cells with appropriate amounts of synthesized peptides. Our in vitro studies suggest that compounds 11a-b, 11i-j, and 11e had little or no effect on cancer cells viabilities.