Thiazolidine

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Thiazolidine
Names
Preferred IUPAC name
1,3-Thiazolidine[1]
Identifiers
3D model (
JSmol
)
ChemSpider
ECHA InfoCard
100.007.275 Edit this at Wikidata
UNII
  • InChI=1S/C3H7NS/c1-2-5-3-4-1/h4H,1-3H2 ☒N
    Key: OGYGFUAIIOPWQD-UHFFFAOYSA-N ☒N
  • C1CSCN1
Properties
C3H7NS
Molar mass 89.16 g·mol−1
Density 1.131 g/cm3[2]
Boiling point 72 to 75 °C (162 to 167 °F; 345 to 348 K)[2] at 25 torr
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Thiazolidine is a

thioether group and an amine group in the 1 and 3 positions. It is a sulfur analog of oxazolidine. Thiazolidine is a colorless liquid. Although the parent thiazolidine is only of academic interest, some derivatives, i.e., the thiazolidines, are important, such as the antibiotic penicillin
.

Preparation

Thiazolidine is prepared by the condensation of cysteamine and formaldehyde.[3] Other thiazolidines may be synthesized by similar condensations. A notable derivative is 4-carboxythiazolidine (thioproline), derived from formaldehyde and cysteine.

Derivatives

The penicillins are elaborate thiazolidine.

Useful thiazolidines include the drug pioglitazone, the antibiotic penicillin, and N-Methyl-2-thiazolidinethione, an accelerator for the vulcanization of chloroprene rubbers.[4]

Thiazolidines functionalized with carbonyls at the 2 and 4 positions, the

diabetes mellitus type 2. Rhodanine
is a related bioactive species, featuring one carbonyl and one thiocarbonyl.

Many thiazolidines are prepared from cysteine and related aminothiols.[5] p-aminocinnamaldehyde is able to differentiate between cysteine and homocysteine. With cysteine, a buffered water solution of the aldehyde changes from yellow to colorless due to a secondary ring closing reaction of the imine. Homocysteine is unable to give ring closure and the color does not change.

Detection of Homocysteine and Cysteine

See also

References