Sesquiterpenoid emmotins from two Poraqueiba species

The phytochemical examination of the trunkwood of Poraqueiba guianensis afforded two novel emmotins, emmotin-Z [(2 R, 3 S)-2,6-dihydroxy-3-(2′-hydroxyisopropyl)-5-formyl-8-methyl-1,2,3,4-tetrahydronaphthalene] and its 6- O-methyl ether, two known seco-iridoids, secologanoside and its methyl ester, b...

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Bibliographic Details
Published in:Phytochemistry (Oxford) 1995, Vol.39 (4), p.835-838
Main Authors: Goulart, Marília O.F., Bento, Edson De S., Trainotti, Aroldo, Alves, Ricardo J., Maia, JoséG.S., De Oliveira, Geovane G., De Oliveira, Alaíde B.
Format: Article
Language:English
Subjects:
Biological and medical sciences
Chemical constitution
Fundamental and applied biological sciences. Psychology
Plant physiology and development
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Summary:The phytochemical examination of the trunkwood of Poraqueiba guianensis afforded two novel emmotins, emmotin-Z [(2 R, 3 S)-2,6-dihydroxy-3-(2′-hydroxyisopropyl)-5-formyl-8-methyl-1,2,3,4-tetrahydronaphthalene] and its 6- O-methyl ether, two known seco-iridoids, secologanoside and its methyl ester, both of them obtained as natural products in their pure form, a new triterpenoid acid, icacinic acid reported elsewhere, and a rare lignan, 1-hydroxypinoresional, along with sitosterol, its 3-O-β- d-glucoside and glucose. Emmotin-Z was also isolated from P. paraensis, besides pinoresinol.
ISSN:0031-9422
1873-3700
DOI:10.1016/0031-9422(94)00950-X