Facile Synthesis of Substituted Mono-, Di-, Tri- and Tetra-2-aryl-2,3-dihydro-1H-perimidines

Recent Advances in the Synthesis of Perimidines and their Applications

Perimidines are versatile scaffolds and a fascinating class of N-heterocycles that have evolved significantly in recent years due to their immense applications in life sciences, medical sciences, and industrial chemistry. Their ability of molecular interaction with different proteins, complex formation with metals, and distinct behavior in various ranges of light makes them more appealing and challenging for future scientists. Various novel technologies have been developed for the selective synthesis of perimidines and their conjugated derivatives. These methods extend to the preparation of different bioactive and industrially applicable molecules. This review aims to present the most recent advancements in perimidine synthesis under varied conditions like MW radiation, ultrasound, and grinding using different catalysts such as ionic liquids, acid, metal, and nanocatalyst and also under green environments like catalyst and solvent-free synthesis. The applications of perimidine derivatives in drug discovery, polymer chemistry, photo sensors, dye industries, and catalytic activity in organic synthesis are discussed in this survey. This article is expected to be a systematic, authoritative, and critical review on the chemistry of perimidines that compiles most of the state-of-art innovation in this area.

1H-2,3-dihydroperimidine derivatives: a new class of potent protein tyrosine phosphatase 1B inhibitors

A series of 1H-2,3-dihydroperimidine derivatives was designed, synthesized, and evaluated as a new class of inhibitors of protein tyrosine phosphatase 1B (PTP1B) with IC₅₀ values in the micromolar range. Compounds 46 and 49 showed submicromolar inhibitory activity against PTP1B, and good selectivity (3.48-fold and 2.10-fold respectively) over T-cell protein tyrosine phosphatases (TCPTP). These results have provided novel lead compounds for the design of inhibitors of PTP1B as well as other PTPs.

Efficient Synthesis of 2,3-Dihydro-1H-Perimidine Derivatives Using HBOB as a Novel Solid Acid Catalyst

An efficient method for the synthesis of substituted 2,3-dihydro-1H-perimidine derivatives is described using bis(oxalato)boric acid (HBOB) as catalyst. The methodology provides an easily handled and recyclable catalyst for this type of reaction as an alternative platform to the conventional acid-catalyzed thermal processes. The time required to complete the reaction using HBOB was found to be shorter than conventional methods. Recycling of the catalyst has been efficiently achieved using a simple procedure.