Pinoresinol

Pinoresinol

Names
IUPAC names (+) form: 4-[(3S,3aR,6S,6aR)-6-(4-hydroxy-3-methoxyphenyl)-1,3,3a,4,6,6a-hexahydrofuro[3,4-c]furan-3-yl]-2-methoxyphenol (7α,7′α,8α,8′α)-3,3′-dimethoxy-7,9′:7′,9-diepoxylignane-4,4′-diol
Other names (+)-Pinoresinol (-)-Pinoresinol
Identifiers
CAS Number	487-36-5^Y
3D model (JSmol)	Interactive image
ChEMBL	ChEMBL487611^N
ChemSpider	66116^N
KEGG	C05366^Y
PubChem CID	73399
UNII	V4N1UDY811^Y
CompTox Dashboard (EPA)	DTXSID20964099
InChI InChI=1S/C20H22O6/c1-23-17-7-11(3-5-15(17)21)19-13-9-26-20(14(13)10-25-19)12-4-6-16(22)18(8-12)24-2/h3-8,13-14,19-22H,9-10H2,1-2H3/t13-,14-,19+,20+/m0/s1^N Key: HGXBRUKMWQGOIE-AFHBHXEDSA-N^N InChI=1/C20H22O6/c1-23-17-7-11(3-5-15(17)21)19-13-9-26-20(14(13)10-25-19)12-4-6-16(22)18(8-12)24-2/h3-8,13-14,19-22H,9-10H2,1-2H3/t13-,14-,19+,20+/m0/s1 Key: HGXBRUKMWQGOIE-AFHBHXEDBE
SMILES COC1=C(C=CC(=C1)C2C3COC(C3CO2)C4=CC(=C(C=C4)O)OC)O
Properties
Chemical formula	C20H22O6
Molar mass	358.38 g/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is ^YN ?) Infobox references

Pinoresinol is a tetrahydrofuran lignan^[1] found in Styrax sp.,^[2] Forsythia suspensa, and in Forsythia koreana.^[3][4] It is also found in the caterpillar of the cabbage butterfly, Pieris rapae where it serves as a defence against ants.^[5]

In food, it is found in sesame seed, in Brassica vegetables^[6] and in olive oil.^[7] Pinoresinol has also been found to be toxic to larvae of the milkweed bug Oncopeltus fasciatus and of the haematophagous insect Rhodnius prolixus, which is a vector of chagas disease.^[8]

Currently, pinoresinol is isolated from plants with low efficiency and low yield.^[9]

Biosynthesis

A first dirigent protein was discovered in Forsythia intermedia. This protein has been found to direct the stereoselective biosynthesis of (+)-pinoresinol from coniferyl alcohol monomers.^[10] Recently, a second, enantiocomplementary dirigent protein was identified in Arabidopsis thaliana, which directs enantioselective synthesis of (-)-pinoresinol.^[11]

Reaction of monolignol radicals in the presence of dirigent protein to form (+)-pinoresinol

In the presence of dirigent protein from Forsythia intermedia, production of (+)-pinoresinol is greatly enriched while production of other products of dimerization is inhibited.

Pharmacology

Pinoresinol inhibits the enzyme α-glucosidase in vitro and may therefore act as a hypoglycemic agent.^[12] A study involving extra virgin olive oil showed that pinoresinol possess in vitro chemoprevention properties. Increased apoptosis and cellular arrest at the G2/M stage in p53-proficient cells occurred.^[13] Pinoresinol of olive oil decreases vitamin D intestinal absorption.^[14]

Metabolism into enterolignans

Pinoresinol, along with other plant lignans, are converted into enterolignans by intestinal microflora in the human body.^[15]

See also

• List of phytochemicals in food

References

1. Páska, Csilla; Innocenti, Gabbriella; Ferlin, Mariagrazia; Kunvári, Mónika; László, Miklós (January 2002). "Pinoresinol from Ipomoea Cairica Cell Cultures". Natural Product Letters. 16 (5): 359–363. doi:10.1080/1057530290033123. ISSN 1057-5634. PMID 12434993. S2CID 13015216.
2. Pastrorova et al. (1997)^{[full citation needed]}
3. Jung, Hyo Won; Mahesh, Ramalingam; Lee, Jong Gu; Lee, Seung Ho; Kim, Young Shik; Park, Yong-Ki (August 2010). "Pinoresinol from the fruits of Forsythia koreana inhibits inflammatory responses in LPS-activated microglia". Neuroscience Letters. 480 (3): 215–220. doi:10.1016/j.neulet.2010.06.043. ISSN 0304-3940. PMID 20600612. S2CID 41511857.
4. Davin, Laurence B.; Bedgar, Diana L.; Katayama, Takeshi; Lewis, Norman G. (1992). "On the stereoselective synthesis of (+)-pinoresinol in Forsythia suspensa from its achiral precursor, coniferyl alcohol". Phytochemistry. 31 (11): 3869–74. doi:10.1016/S0031-9422(00)97544-7. PMID 11536515.
5. Schroeder, F. C.; Del Campo, M. L.; Grant, J. B.; Weibel, D. B.; Smedley, S. R.; Bolton, K. L.; Meinwald, J.; Eisner, T. (2006). "Pinoresinol: A lignol of plant origin serving for defense in a caterpillar". Proceedings of the National Academy of Sciences. 103 (42): 15497–501. Bibcode:2006PNAS..10315497S. doi:10.1073/pnas.0605921103. PMC 1622851. PMID 17030818.
6. Milder, Ivon E. J.; Arts, Ilja C. W.; Putte, Betty van de; Venema, Dini P.; Hollman, Peter C. H. (2007). "Lignan contents of Dutch plant foods: A database including lariciresinol, pinoresinol, secoisolariciresinol and matairesinol". British Journal of Nutrition. 93 (3): 393–402. doi:10.1079/BJN20051371. PMID 15877880.
7. Owen, R.W; Giacosa, A; Hull, W.E; Haubner, R; Spiegelhalder, B; Bartsch, H (2000). "The antioxidant/anticancer potential of phenolic compounds isolated from olive oil". European Journal of Cancer. 36 (10): 1235–47. doi:10.1016/S0959-8049(00)00103-9. PMID 10882862.
8. Cabral, M.M.O; Kelecom, A; Garcia, E.S (December 1999). "Effects of the lignan, pinoresinol on the moulting cycle of the bloodsucking bug Rhodnius prolixus and of the milkweed bug Oncopeltus fasciatus". Fitoterapia. 70 (6): 561–567. doi:10.1016/s0367-326x(99)00089-1. ISSN 0367-326X.
9. Lv, Yongkun; Cheng, Xiaozhong; Du, Guocheng; Zhou, Jingwen; Chen, Jian (2017-05-12). "Engineering of an H2 O2 auto-scavenging in vivo cascade for pinoresinol production". Biotechnology and Bioengineering. 114 (9): 2066–2074. doi:10.1002/bit.26319. ISSN 0006-3592. PMID 28436004. S2CID 3289052.
10. Davin LB, Wang HB, Crowell AL, et al. (1997). "Stereoselective bimolecular phenoxy radical coupling by an auxiliary (dirigent) protein without an active center". Science. 275 (5298): 362–6. doi:10.1126/science.275.5298.362. PMID 8994027. S2CID 41957412.
11. Pickel B, Constantin MA, Pfannsteil J, Conrad J, Beifuss U, Schaffer A (March 2007). "An Enantiocomplementary Dirigent Protein for the Enantioselective Laccase-Catalyzed Oxidative Coupling of Phenols". Angewandte Chemie. 53 (4): 273–284. doi:10.1007/s10086-007-0892-x. S2CID 195313754.
12. Wikul, A; Damsud, T; Kataoka, K; Phuwapraisirisan, P (2012). "(+)-Pinoresinol is a putative hypoglycemic agent in defatted sesame (Sesamum indicum) seeds though inhibiting α-glucosidase". Bioorganic & Medicinal Chemistry Letters. 22 (16): 5215–7. doi:10.1016/j.bmcl.2012.06.068. PMID 22818971.
13. Fini, L; Hotchkiss, E; Fogliano, V; Graziani, G; Romano, M; De Vol, EB; Qin, H; Selgrad, M; et al. (2008). "Chemopreventive properties of pinoresinol-rich olive oil involve a selective activation of the ATM-p53 cascade in colon cancer cell lines". Carcinogenesis. 29 (1): 139–46. doi:10.1093/carcin/bgm255. PMID 17999988.
14. Goncalves, Aurélie; Margier, Marielle; Tagliaferri, Camille; Lebecque, Patrice; Georgé, Stéphane; Wittrant, Yohann; Coxam, Véronique; Amiot, Marie-Josèphe; Reboul, Emmanuelle (September 2016). "Pinoresinol of olive oil decreases vitamin D intestinal absorption". Food Chemistry. 206: 234–238. doi:10.1016/j.foodchem.2016.03.048. ISSN 0308-8146. PMID 27041321.
15. Milder, IE; Arts, IC; Van De Putte, B; Venema, DP; Hollman, PC (2005). "Lignan contents of Dutch plant foods: A database including lariciresinol, pinoresinol, secoisolariciresinol and matairesinol". The British Journal of Nutrition. 93 (3): 393–402. doi:10.1079/BJN20051371. PMID 15877880.