Δ-Cadinol

δ-Cadinol is an organic compound, a sesquiterpenoid alcohol produced by many plants as well as some animals and microorganisms. It is a white crystalline solid, soluble in isopropyl ether and ethanol. It is an epimer of α-cadinol.

δ-Cadinol

Names
IUPAC name (1S,4S)-1,6-Dimethyl-4-propan-2-yl-3,4,4a,7,8,8a-hexahydro-2H-naphthalen-1-ol
Other names Torreyol 1-epi-α-Cadinol 1β-Cadin-4-en-10-ol
Identifiers
CAS Number	19435-97-3 Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:156223
ChemSpider	2341398
PubChem CID	3084311
CompTox Dashboard (EPA)	DTXSID00173061
InChI InChI=1S/C15H26O/c1-10(2)12-7-8-15(4,16)14-6-5-11(3)9-13(12)14/h9-10,12-14,16H,5-8H2,1-4H3/t12-,13-,14-,15+/m0/s1 Key: LHYHMMRYTDARSZ-ZQDZILKHSA-N InChI=1/C15H26O/c1-10(2)12-7-8-15(4,16)14-6-5-11(3)9-13(12)14/h9-10,12-14,16H,5-8H2,1-4H3/t12-,13-,14-,15+/m0/s1 Key: LHYHMMRYTDARSZ-ZQDZILKHBP
SMILES CC1=C[C@]2([H])[C@@](CC1)([H])[C@](C)(O)CC[C@H]2C(C)C
Properties
Chemical formula	C 15H 26O
Molar mass	222.37 g/mol
Appearance	White crystalline needles
Melting point	138 to 139 °C (280 to 282 °F; 411 to 412 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

δ-Cadinol exists in nature as either of two enantiomers distinguished by the prefixes (+)- and (−)-.^[1][2] The (+)-isomer was identified by E. Shinozaki in 1922 from the leaves of Torreya nucifera and originally named torreyol.^[1] The (−)-isomer was isolated in 1951 by Haagen-Smit and others from Pinus albicaulus and first called albicaulol.^[1] Its structure was determined in 1970 by Lars Westfelt.^[2] Other names were given to δ-cadinol based on its various biological sources before the structures were confirmed, including sesquigoyol for (+)-δ-cadinol and pilgerol for (−)-δ-cadinol.^[2][3] Lambertol is thought to be either (+)-δ-cadinol or (−)-δ-cadinol.^[2] Cedrelanol was originally thought to be identical to (−)-δ-cadinol but was later confirmed to have the structure of τ-cadinol.^[4]

Occurrence

δ-Cadinol is produced by the fungus Xylobolus frustulatus as long white needles when grown in malt agar medium.^[5] It also occurs in many conifers,^[1] and in many other organisms including

• Achillea millefolium (6%)^[6]
• Cedrela odorata^[1]
• Clitocybe illudens (a mushroom)^[3]
• Copaifera multijuga (1%; a major contributor to the aroma of copaiba oil)^[7]
• Dictyopteris divaricata (a brown alga)^[1]
• Plebejus argyrognomon (a butterfly; acts as a pheromone)^[8]

See also

• α-Cadinol
• τ-Cadinol

References

1. Westfelt, Lars; Tränkner, Hans; Brandänge, Svante; Walle, Thomas; Sjöberg, Berndt; Bunnenberg, E.; Djerassi, Carl; Records, Ruth (1966). "(---)-Torreyol ("delta-Cadinol")". Acta Chemica Scandinavica. 20: 2893–2894. doi:10.3891/acta.chem.scand.20-2893.
2. Lars Westfelt (1970), "(−)-Torryeol ('δ-Cadinol')". Acta Chemica Scandinavica volume 24 issue 5 16181622 doi:10.3891/acta.chem.scand.24-1618
3. Borg-Karlson, A; Norin, Torbjörn; Talvitie, Antti (1981). "Configurations and conformations of torreyol (δ-cadinol), α-cadinol, T-muurolol and T-cadinol". Tetrahedron. 37 (22): 425. doi:10.1016/S0040-4020(01)92031-9.
4. Smolders, R.R. (1967). "Structure et configuration absolue du cédrélanol ((−)-δ-cadinol), alcool sesquiterpénique C₁₅H₂₆O l'huile essentielle Cedrela odorata brasiliensis". Canadian Journal of Chemistry. 45 (9): 889-896. doi:10.1139/v67-152.
5. Vaneijk, G; Roeijmans, H; Verwiel, P (1984). "Isolation and identification of the sesquiterpenoid (+)-torreyol fromXylobolus frustulatus". Experimental Mycology. 8 (3): 273. doi:10.1016/0147-5975(84)90012-4.
6. Kotan, Recep; Cakir, Ahmet; Dadasoglu, Fatih; Aydin, Tuba; Cakmakci, Ramazan; Ozer, Hakan; Kordali, Saban; Mete, Ebru; Dikbas, Neslihan (2010). "Antibacterial activities of essential oils and extracts of TurkishAchillea, SaturejaandThymusspecies against plant pathogenic bacteria". Journal of the Science of Food and Agriculture. 90 (1): 145–60. doi:10.1002/jsfa.3799. PMID 20355025.
7. Sant'Anna, Beatriz M. P.; Fontes, Silvia Paredes; Pinto, Angelo C.; Rezende, Claudia M. (2007). "Characterization of woody odorant contributors in copaiba oil (Copaifera multijuga Hayne)". Journal of the Brazilian Chemical Society. 18 (5): 984. doi:10.1590/S0103-50532007000500016.
8. Lundgren, Lennart; Bergström, Gunnar (1976). "Wing scents and scent-released phases in the courtship behavior of Lycaeides argyrognomon (Lepidoptera: Lycaenidae)". Journal of Chemical Ecology. 1 (4): 399. doi:10.1007/BF00988581. S2CID 37093578.