Coniferyl aldehyde

Coniferyl aldehyde is an organic compound with the formula HO(CH3O)C6H3CH=CHCHO. It is a derivative of cinnamaldehyde, featuring 4-hydroxy and 3-methoxy substituents. It is a major precursor to lignin.[1][2]

Coniferyl aldehyde
Chemical structure of trans-coniferyl aldehyde
Names
IUPAC names
(Z)-3-(4-hydroxy-3-methoxyphenyl)prop-2-enal
(E)-3-(4-hydroxy-3-methoxyphenyl)prop-2-enal
Other names
coniferaldehyde
cis-coniferyl aldehyde
trans-coniferyl aldehyde
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
ECHA InfoCard 100.006.618
UNII
  • InChI=1S/C10H10O3/c1-13-10-7-8(3-2-6-11)4-5-9(10)12/h2-7,12H,1H3/b3-2+
  • COC1=C(C=CC(=C1)C=CC=O)O
Properties
C10H10O3
Molar mass 178.18 g/mol
Density 1.186 g/mL
Melting point 80 °C (176 °F; 353 K)
Boiling point 338.8 °C (641.8 °F; 612.0 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Biosynthetic role

In sweetgum (Liquidambar styraciflua), coniferyl aldehyde is a precursor to sinapaldehyde via hydroxylation mediated by coniferyl aldehyde 5-hydroxylase.[3]

Coniferyl aldehyde is reduced to coniferyl alcohol by the action of dehydrogenase enzymes.[2]

It is found in Senra incana (Hibisceae). It is a low molecular weight phenol that is susceptible to extraction from cork stoppers into wine.[4]


See also

References
  1. Wout Boerjan, John Ralph, Marie Baucher "Lignin Biosynthesis" Annu. Rev. Plant Biol. 2003, vol. 54, pp. 519–46. doi:10.1146/annurev.arplant.54.031902.134938
  2. Li, Laigeng; Cheng, Xiao Fei; Leshkevich, Jacqueline; Umezawa, Toshiaki; Harding, Scott A.; Chiang, Vincent L. (2001). "The Last Step of Syringyl Monolignol Biosynthesis in Angiosperms is Regulated by a Novel Gene Encoding Sinapyl Alcohol Dehydrogenase". The Plant Cell. 13 (7): 1567–1586. doi:10.1105/tpc.010111. PMC 139549. PMID 11449052.
  3. Osakabe, Keishi; Tsao, Cheng Chung; Li, Laigeng; Popko, Jacqueline L.; Umezawa, Toshiaki; Carraway, Daniel T.; Smeltzer, Richard H.; Joshi, Chandrashekhar P.; Chiang, Vincent L. (1999). "Coniferyl aldehyde 5-hydroxylation and methylation direct syringyl lignin biosynthesis in angiosperms". Proceedings of the National Academy of Sciences. 96 (16): 8955–8960. Bibcode:1999PNAS...96.8955O. doi:10.1073/pnas.96.16.8955. PMC 17714. PMID 10430877.
  4. Polyphenolic Composition of Quercus suber Cork from Different Spanish Provenances. Elvira Conde, Estrella Cadahía, María Concepción García-Vallejo and Brígida Fernández de Simón, J. Agric. Food Chem., 1998, volume 46, pp 3166–3171 doi:10.1021/jf970863k
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