Piperazine is an organic compound consisting of a six-membered ring containing two nitrogen atoms in opposite positions in the ring. The chemical formula of piperazine is C4H10N2, and it is an important pharmaceutical intermediate. Pyrimidines and piperazines are known to be the backbone of many bulk compounds and important core structures for approved drugs; studies have shown that combining a pyridine ring with a piperazine moiety within a single structural framework enhances biological activity.
Benzothiazoles are aromatic heterocyclic compounds with the chemical formula C7H5NS. Benzothiazoles and their derivatives are a very important class of heterocyclic compounds that are ubiquitous in nature and are mainly used in medicine, agriculture and industry. In medicine, benzothiazole derivatives are a kind of very important pharmaceutical intermediates with good pharmacological and biological activities. It can be used as a fungicide, anti-tuberculosis drug, anti-malarial, anti-convulsant, insecticide, sedative and anti-inflammatory drug, and can also be used to treat diabetes and has anti-cancer effects.
Isoxazole is a liquid heterocyclic compound C3H3NO isomeric with oxazole and having a penetrating odor like that of pyridine. Isoxazoles belong to an important class of five-membered aromatic heterocycles containing two electronegative heteroatoms, nitrogen and oxygen, in a 1,2-relationship and three regular sp2 carbon atoms. These molecules are found to be key components in various synthetic products in daily use and also present as a pharmacophore essential for biological activity in many drugs and bioactive natural products. In addition, isoxazoles have demonstrated their ability to exhibit hydrogen bond donor/acceptor interactions with a variety of enzymes and receptors.
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