Cucurbitin

Cucurbitin
Names
IUPAC name
(3R)-3-Aminopyrrolidine-3-carboxylic acid
Other names
(+)-Cucurbitin; Cucurbitine
Identifiers
6807-92-7 Yes
ChemSpider 390997
Jmol-3D images Image
PubChem 442634
Properties
Molecular formula
C5H10N2O2
Molar mass 130.15 g·mol−1
Density 1.263 g/mL
Boiling point 279 °C (534 °F; 552 K)
Except where noted otherwise, data is given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Infobox references

Cucurbitin is an amino acid and a carboxypyrrolidine that can eliminate parasitic worms.[1] It is found in Cucurbita seeds.[2][3] In 1992, a patent was filed to use the (-)-enantiomer in cosmetics and pharmaceuticals.[4] Cucurbitin is found in uncooked pumpkin seeds.[5]

Cucurbitin is an inhibitor of histidine decarboxylase, which is associated with inhibition of the biosynthesis of histamine responsible, among other things, for the formation of the inflammatory response.[6] It is used in cosmetics for dry and sensitive skin and for the treatment of schistosomiasis. Cucurbitin causes degenerative changes in the reproductive organs of parasitic flatworms called flukes.[7][8]

References

  1. Pierce, Andrea (1999). The Apha Practical Guide to Natural Medicines. New York: Stonesong Press, William Morrow & Company. pp. 212–214. ISBN 0-688-16151-0.
  2. "Pumpkin". Drugs.com. Retrieved November 22, 2014.
  3. Mihranian, Valentine H; Abou-Chaar, Charles I (1968). Theodor Karl Just; American Society of Pharmacognosy, ed. "Extraction, detection, and estimation of cucurbitin in Cucurbita seeds". Lloydia vol 31 (Lloyd Library and Museum) (issue 1): pp 2329.
  4. "(WO1992015563) USE OF CUCURBITIN FOR THE PREPARATION OF A COSMETIC OR PHARMACEUTICAL, PARTICULARLY DERMATOLOGICAL, ANTIALLERGENIC COMPOSITION AND METHOD INVOLVING APPLICATION THEREOF". Retrieved 18 March 2013.
  5. "Pumpkin Seed". South Towne Surgery Center. Retrieved November 22, 2014.
  6. Andre, Patrice; Thiery, Valérie; Guillaumet, Gérald. "Reacting 1-Benzyl-3-Pyrrolidinone with Ammoniacal Solutions;Hydrolysis; Reduction US 5696273 A". United States Patent Office. Retrieved November 22, 2014.
  7. Annual Reports in Medicinal Chemistry, Cornelius Kennedy Cain, 1966, Academic Press, ISBN 0120405016
  8. Austin, Daniel F. (2004). Florida Ethnobotany. Boca Raton, FL: CRC Press. pp. 411–412. ISBN 0-8493-2332-0.