Secologanin

Secologanin is a secoiridoid monoterpene synthesized from geranyl pyrophosphate in the mevalonate pathway. Secologanin then proceeds with dopamine or tryptamine to form ipecac and terpene indole alkaloids, respectively.

Secologanin
Names
IUPAC name
Methyl (2S,3R,4S)-3-ethenyl-2-(β-D-glucopyranosyloxy)-4-(2-oxoethyl)-3,4-dihydro-2H-pyran-5-carboxylate
Systematic IUPAC name
Methyl (4S,5R,6S)-3-ethenyl-4-(2-oxoethyl)-2-{[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy}-3,4-dihydro-2H-pyran-5-carboxylate
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
KEGG
UNII
  • InChI=1S/C17H24O10/c1-3-8-9(4-5-18)10(15(23)24-2)7-25-16(8)27-17-14(22)13(21)12(20)11(6-19)26-17/h3,5,7-9,11-14,16-17,19-22H,1,4,6H2,2H3/t8-,9+,11-,12-,13+,14-,16+,17+/m1/s1 InChI Key = CSKKDSFETGLMSB-NRZPKYKESA-N
  • COC(=O)C1=CO[C@H]([C@@H]([C@@H]1CC=O)C=C)O[C@H]2[C@@H]([C@H]([C@@H]([C@H](O2)CO)O)O)O
Properties
C17H24O10
Molar mass 388.369 g·mol−1
Density 1.42 g/mL
Boiling point 595.5 °C (1,103.9 °F; 868.6 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Biosynthesis

Secologanin biosynthesis begins from geranyl pyrophosphate (GPP) taken from the mevalonate pathway used to make terpenoids. Recent efforts have characterized the entire secologanin biosynthetic pathway.[1] Secologanin is formed from loganin through the action of the enzyme secologanin synthase. Secologanin is then able to proceed onto produce ipecac and terpene indole alkaloids.[2]

References
  1. Miettinen, Karel; Dong, Lemeng; Navrot, Nicolas; Schneider, Thomas; Burlat, Vincent; Pollier, Jacob; Woittiez, Lotte; van der Krol, Sander; Lugan, Raphaël; Ilc, Tina; Verpoorte, Robert; Oksman-Caldentey, Kirsi-Marja; Martinoia, Enrico; Bouwmeester, Harro; Goossens, Alain; Memelink, Johan; Werck-Reichhart, Danièle (7 April 2014). "The seco-iridoid pathway from Catharanthus roseus". Nature Communications. 5 (1): 3606. doi:10.1038/ncomms4606. PMC 3992524. PMID 24710322.
  2. "Secologanin Biosynthesis". Retrieved 31 May 2011.
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