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New tetra-acetylated oligosaccharide diterpene from Cupania vernalis
(Sociedade Brasileira de Química, 2001-06-01)
O diterpeno glicosídico inédito, denominado vernanolídeo, possuindo o esqueleto geranil-geraniol, foi isolado do caule de Cupania vernalis, uma espécie da família Sapindaceae, conhecida popularmente como arco de peneira. ...
Diterpenic adducts from Xylopia species
(1991-12-01)
Xylopia emarginata and X. amazonica contain diterpene adducts probably originating from Diels-Aider reaction between labdane and kaurane derivatives. This type of substance seems to be characteristic of the genus Xylopia. © 1991.
Clerodane diterpenes from Aristolochia species
(1987-12-01)
The investigation of Aristolochia brasiliensis and A. esperanzae afforded 12 clerodane derivatives, including the following six novel ones: rel (5S, 8R, 9S, 10R)-2-oxo-ent-3-cleroden-15-oic acid, rel (5S, 8R, 9S, ...
Jatrowedione, a lathyrane diterpene from Jatropha weddelliana
(Elsevier B.V., 1998-08-01)
3-Acetylaleuritolic acid, sitosterol and a novel lathyrane diterpene, jatrowedione, have been isolated from the roots of Jatropha weddelliana. The elucidation of the structure of the latter was accomplished by detailed NMR ...
Ryanodane diterpenes from two Erythroxylum species
(Elsevier B.V., 2007-07-01)
Ryanodane diterpenes, named 14-O-methyl-ryanodanol and ryanodanol, were isolated from ripe fruit of Erythroxylum passerinum. Compound 2 was also found in the leaves of this species, while 1 was obtained from the leaves of ...
Lignans and diterpenes of three Aristolochia species
(Elsevier B.V., 1988-12-01)
Phytochemical examination of Aristolochia cymbifera, A. esperanzae and A. galeata led to the isolation of furofuran and dibenzylbutyrolactone type lignans, as well as of clerodane and ent-labdane type diterpenes. Structural ...
Diterpenes from Nardophyllum lanatum
(1990)
The aerial parts of Nardophyllum lanatum, collected in northern Chile, gave in addition to a seco-diterpene isolated from an Argentinian collection two new cis-clerodanes and an acid derived from geranyl geraniol. The ...
A heliangolide, 3-hydroxyumbelliferone derivatives and diterpenes from Bahia ambrosioides
(1990)
The aerial parts of Bahia ambrosioides afforded several germacranolides and heliangolides one of which has not been reported previously. Furthermore, in addition to widespread compounds, four 3-hydroxyumbelliferone derivatives ...
Diterpenes from Haplopappus chrysanthemifolius
(1999)
Three new diterpenes were isolated from the aerial part of Haplopappus chrysanthemifolius and assigned the structures 6α-hydroxy-ent-labd-8(17)-en- 15-oic acid, 3β-acetoxy-ent-labd-8(17)-en-15-oic acid and 18α-acetoxylabd- ...
Antimicrobial Diterpenes from Azorella Species Against Gram-Positive Bacteria
(Natural Products, 2015)
The present study was aimed at evaluating the antibacterial activity of mulinane and azorellane
diterpenes isolated from the Andean plants Azorella compacta and A. trifoliolata and semisynthetic
derivatives against ...