Pterocarpan

Pterocarpans are derivatives of isoflavonoids found in the family Fabaceae. It is a group of compounds which can be described as benzo-pyrano-furano-benzenes (i.e. 6H-[1]benzofuro[3,2-c]chromene skeleton) which can be formed by coupling of the B ring to the 4-one position.[1]

Pterocarpan chemical structure. It consists of a 1-benzofuran moiety (dotted blue circle) fused to a 2H-chromene moiety (dotted green circle). The systematic name for it is 6H-[1]benzofuro[3,2-c]chromene. The new numbering of the resulting moiety is shown with red numbers.

2'-hydroxyisoflavone reductase is the enzyme responsible for the conversion in Cicer arietinum[2] and glyceollin synthase for the production of glyceollins, phytoalexins in soybean.[3]

Known compounds
Medicarpin chemical structure
Phaseolin – a prenylated pterocarpan – chemical structure
Glyceollin III – a prenylated pterocarpan – chemical structure

References
  1. Pterocarpans on the National Library of Medicine - Medical Subject Headings
  2. Tiemann, Karin; Hinderer, Walter; Barz, Wolfgang (23 March 1987). "Isolation of NADPH:isoflavone oxidoreductase, a new enzyme of Pterocarpan phytoalexin biosynthesis in cell suspension cultures of Cicer arietinum". FEBS Letters. Wiley. 213 (2): 324–328. doi:10.1016/0014-5793(87)81515-6. ISSN 0014-5793.
  3. Welle R, Grisebach H (1988). "Induction of phytoalexin synthesis in soybean: enzymatic cyclization of prenylated pterocarpans to glyceollin isomers". Arch. Biochem. Biophys. 263 (1): 191–8. doi:10.1016/0003-9861(88)90627-3. PMID 3369863.
  4. Pistelli, Luisa; Noccioli, Cecilia; Appendino, Giovanni; Bianchi, Federica; Sterner, Olov; Ballero, Mauro (2003). "Pterocarpans from Bituminaria morisiana and Bituminaria bituminosa". Phytochemistry. Elsevier BV. 64 (2): 595–598. doi:10.1016/s0031-9422(03)00190-0. ISSN 0031-9422.
  5. Rukachaisirikul, Thitima; Innok, Phongsak; Aroonrerk, Nuntana; Boonamnuaylap, Woraluk; Limrangsun, Saranya; Boonyon, Chanakan; Woonjina, Umpawan; Suksamrarn, Apichart (2007). "Antibacterial Pterocarpans from Erythrina subumbrans". Journal of Ethnopharmacology. Elsevier BV. 110 (1): 171–175. doi:10.1016/j.jep.2006.09.022. ISSN 0378-8741.
  6. New cytotoxic prenylated isoflavonoids from Bituminaria morisiana. Cottiglia Filippo, Casu Laura, Bonsignore Leonardo, Casu Mariano, Floris Costantino, Leonti Marco, Gertsch Juerg and Heilmann Jörg, Planta medica 71 (3) (2005), pp. 254-260
  7. Zimmermann, M. Carla; Tilghman, Syreeta L.; Boué, Stephen M.; Salvo, Virgilio A.; Elliott, Steven; et al. (1 October 2009). "Glyceollin I, a Novel Antiestrogenic Phytoalexin Isolated from Activated Soy". Journal of Pharmacology and Experimental Therapeutics. American Society for Pharmacology & Experimental Therapeutics (ASPET). 332 (1): 35–45. doi:10.1124/jpet.109.160382. ISSN 0022-3565. PMC 2802480.
  8. Matsuura, Nobuyasu; Nakai, Rie; Iinuma, Munekazu; Tanaka, Toshiyuki; Inoue, Kenichro (1994). "A prenylated flavanone from roots of Maackia amurensis subsp. Buergeri". Phytochemistry. Elsevier BV. 36 (1): 255–256. doi:10.1016/s0031-9422(00)97051-1. ISSN 0031-9422.
  9. Leonti, Marco; Casu, Laura; Gertsch, Jürg; Bonsignore, Leonardo; Floris, Costantino; Casu, Mariano; Cottiglia, Filippo (18 March 2010). "A pterocarpan from the seeds of Bituminaria morisiana". Journal of Natural Medicines. Springer Science and Business Media LLC. 64 (3): 354–357. doi:10.1007/s11418-010-0408-7. ISSN 1340-3443.
  10. Tanaka, Hitoshi; Tanaka, Toshihiro; Etoh, Hideo (1997). "A pterocarpan from Erythrina orientalis". Phytochemistry. Elsevier BV. 45 (1): 205–207. doi:10.1016/s0031-9422(96)00841-2. ISSN 0031-9422.
  11. Blagrove, R. J.; Colman, P. M.; Lilley, G. G.; Van Donkelaar, A.; Suzuki, E. (1983). "Physicochemical and structural studies of phaseolin from French bean seed". Plant Foods for Human Nutrition. Springer Science and Business Media LLC. 33 (2–3): 227–229. doi:10.1007/bf01091313. ISSN 0921-9668.
  12. PERRIN, DAWN R.; BOTTOMLEY, W. (1961). "Pisatin: an Antifungal Substance from Pisum sativum L.". Nature. Springer Science and Business Media LLC. 191 (4783): 76–77. doi:10.1038/191076a0. ISSN 0028-0836.
  13. Manjary, Frédéric; Petitjean, Alain; Conan, Jean-Yves; Thérèse Martin, Marie; Frappier, François; Rasoanaivo, Philippe; Ratsimamanga-Urverg, Suzanne (1993). "A prenylated pterocarpan from Mundulea striata". Phytochemistry. Elsevier BV. 33 (2): 515–517. doi:10.1016/0031-9422(93)85554-5. ISSN 0031-9422.
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