Thiazolines

chemical compound

Thiazolines (; or dihydrothiazoles) are a group of isomeric 5-membered heterocyclic compounds containing both sulfur and nitrogen in the ring. Although unsubstituted thiazolines are rarely encountered themselves, their derivatives are more common and some are bioactive. For example, in a common post-translational modification, cysteine residues are converted into thiazolines.

Tebipenem (brand name Orapenem) is a broad-spectrum orally-administered antibiotic, from the carbapenem subgroup of β-lactam antibiotics. It was developed as a replacement drug to combat bacteria that had acquired antibiotic resistance to commonly used antibiotics. Tebipenem is formulated as the ester tebipenem pivoxil due to the better absorption and improved bioavailability of this form. It has performed well in clinical trials for ear infection and looks likely to be further developed in future. It is only marketed in Japan. Tebipenem is the first carbapenem whose prodrug form, the pivalyl

Cymiazole is a veterinary drug used as an ectoparasiticide. It is also used to control Varroa mites in honeybees.

'2-sec-Butyl-4,5-dihydrothiazole (also known as SBT') is a thiazoline compound with the molecular formula C7H13NS. A volatile pheromone found in rodents such as mice and rats, SBT is excreted in the urine and promotes aggression amongst males while inducing synchronized estrus in females.

Telomestatin is a macrocyclic chemical compound that acts by inhibiting the telomerase activity of in vitro cancer cells. It was first isolated from the bacteria Streptomyces anulatus. Telomestatin induces the formation of basket-type G-quadruplex (G4) structures from hybrid-type G-quadruplexes in the telomeric region. Upon formation of G4 structure there will be a decrease in the activity of the telomerase, which is involved in the replication of the telomeres and as a result the cell dies due to Hayflick type senescence.