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Quebrachitol

Quebrachitol is a naturally occurring optically active cyclitol, a cyclic polyol. It can be found in Allophylus edulis[1] and in the serum left after the coagulation of the Hevea brasiliensis latex in the operation of rubber tapping.[2] It is also found in Cannabis sativa,[3] in Paullinia pinnata and in seabuckthorn.[4]

It was first isolated by Tanret in 1887 from the bark of Aspidosperma quebracho. The substance was tested as a sweetening agent for diabetics in 1933. It shows a sweetening property half of that of sucrose but induces colic or diarrhoea at concentration used to render the food palatable.[5]

Quebrachitol is a versatile building block in the construction of naturally occurring bioactive materials.[6] For example, its conversion into antifungal (E)-β-methoxyacrylate, oudemansin X has been made.[7]

References

  1. ^ Díaz, Martina; González, Andrés; Castro-Gamboa, Ian; Gonzalez, David; Rossini, Carmen (13 October 2008). "First record of l-quebrachitol in Allophylus edulis (Sapindaceae)". Carbohydrate Research. 343 (15): 2699–2700. doi:10.1016/j.carres.2008.07.014. PMID 18715552.
  2. ^ van Alphen, Jan (1951). "Quebrachitol". Industrial & Engineering Chemistry. 43: 141–145. doi:10.1021/ie50493a041.
  3. ^ 1955 - ACTA UNIVERSITATIS PALACKIANAE OLOMUCENSIS - TOM. VI. - HEMP AS A MEDICAMENT, Properties of isolated substances. Prof. Jan Kabelik, A brief survey of the methods of isolation and the physical and chemical properties and structures of the isolated antibacterial substances. F. Santavy & Z. Krejci
  4. ^ Some new data about antiviral and related activities of seabuckthorn principals and the prospects of their use. Shipulina L.D., All-Russian Research Institute of Medicinal and Aromatic Plants, Moscow, Russia
  5. ^ McCance, RA; Lawrence, RD (1933). "An investigation of quebrachitol as a sweetening agent for diabetics". Biochem J. 27 (4): 986–9. doi:10.1042/bj0270986. PMC 1252976. PMID 16745234.
  6. ^ Kiddle, James J. (1995). "Quebrachitol: A Versatile Building Block in the Construction of Naturally Occurring Bioactive Materials". Chemical Reviews. 95 (6): 2189–2202. doi:10.1021/cr00038a016.
  7. ^ Total synthesis of antibiotic (−)-oudemansin X utilizing L-quebrachitol as a chiral pool. Chida N., Yamada K. and Ogawa S., Chemistry Letters, 1992, no4, pp. 687-690

External links

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