Loganin is one of the best-known of the iridoid glycosides. It is named for the Loganiaceae, having first been isolated from the seeds of a member of that plant family, namely those of Strychnos nux-vomica. It also occurs in Alstonia boonei (Apocynaceae),[1] a medicinal tree of West Africa and in the medicinal/entheogenic shrub Desfontainia spinosa (Columelliaceae) native to Central America and South America.
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IUPAC name
Methyl (1S,4aS,6S,7R,7aS)-1-(β-D-glucopyranosyloxy)-6-hydroxy-7-methyl-1,4a,5,6,7,7a-hexahydrocyclopenta[c]pyran-4-carboxylate
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Systematic IUPAC name
Methyl (1S,4aS,6S,7R,7aS)-6-hydroxy-7-methyl-1-{[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-1,4a,5,6,7,7a-hexahydrocyclopenta[c]pyran-4-carboxylate | |
Other names
Loganoside
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Identifiers | |
3D model (JSmol)
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ECHA InfoCard | 100.038.529 |
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PubChem CID
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CompTox Dashboard (EPA)
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Properties | |
C17H26O10 | |
Molar mass | 390.385 g·mol−1 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Biosynthesis
editLoganin is formed from loganic acid by the enzyme loganic acid O-methyltransferase (LAMT). Loganin then becomes a substrate for the enzyme secologanin synthase (SLS) to form secologanin, a secoiridoid monoterpene found as part of ipecac and terpene indole alkaloids.
References
edit- ^ Adotey, J. P.; Adukpo, G. E.; Opoku-Boahen, Y.; Armah, F. A. (2012). "A Review of the Ethnobotany and Pharmacological Importance of Alstonia boonei De Wild (Apocynaceae)". ISRN Pharmacology. 2012: 587160. doi:10.5402/2012/587160. PMC 3413980. PMID 22900200.