Results 111 to 120 of about 942 (157)

Secondary Metabolites from <i>Croton</i> Species and Their Biological Activity on Cell Cycle Regulators. [PDF]

Metabolites
Alamillo-Vásquez JA, Pérez-Torres CA, Ibarra-Laclette E, Ramón-Farías F, Nicasio-Torres P, Alatorre-Cobos F.   +5 more
europepmc   +1 more source

Enhanced Recovery and Biological Evaluation of Steviol Glycosides from Genotypically Diverse Stevia Rebaudiana.

Ann Afr Med
Ouriagli T, Amnay A, Raoui SM, Chahdi FO, Rodi YK, Chabir R.   +5 more
europepmc   +1 more source

Synthesis of ent-Kaurane Diterpene Monoglycosides

Molecules, 2011
Synthesis of two ent-kaurane diterpene glycosides, steviol 19-O-β-D-glucopyranosiduronic acid (steviol glucuronide, 5), and 13-hydroxy ent-kaur-16-en-19-oic acid-β-D-glucopyranosyl ester (7) has been achieved from a common starting material, steviol, using phase transfer catalyst. Also, synthesis of an additional 17-nor-ent-kaurane glycoside, namely 13-
Indra Prakash, Prakash Indra, Venkata Sai Prakash Chaturvedula   +2 more
exaly   +4 more sources

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HPLC quantitation of kaurane diterpenes in Xylopia species

Fitoterapia, 2001
Xylopia frutescens is a tree native to the Brazilian Amazon whose seeds are rich in kaurenoic acid, a diterpene that showed in vitro activity against Trypanosoma cruzi. Aiming to find out alternative sources for kaurenoic acid, the content of some kaurane diterpenes was evaluated in X. aromatica and X.
A C, de Melo, B B, Cota, A B, de Oliveira, F C, Braga   +3 more
openaire   +2 more sources

Correlation of diterpenes of the (–)-kaurane series and atractyligenin

Australian Journal of Chemistry, 1968
19-Nor-16a- and 19-nor-16ß-(-)-kaurane (11) and (111) have been prepared by unambiguous methods from 16a-( -)-kaurane-3a,l7,19-triol (IV) and (-)-kaur-16-ene-3a,l9-diol (V) and have been identified with samples derived from atractyligenin, thus providing conclusive proof for the skeleton of the latter.
EL Ghisalberti, PR Jefferies, S Passannanti, F Piozzi   +3 more
openaire   +1 more source

A new kaurane diterpene dimer from Parinari campestris

Fitoterapia, 2005
A new kaurane diterpene dimer, 15-oxozoapatlin-13alpha-yl-10'alpha,16'alpha-dihydroxy-9'alpha-methyl-20'-nor-kauran-19'-oic acid gamma-lactone-17'-oate (1), together with the known 13-hydroxy-15-oxozoapatlin (2), 10alpha,13alpha,16alpha,17-tetrahydroxy-9alpha-methyl-15-oxo-20-nor-kauran-19-oic acid gamma-lactone (3), 2alpha,10alpha,13alpha,16alpha,17 ...
BRACA, ALESSANDRA, A. F. ABDEL RAZIK, J. MENDEZ, MORELLI, IVANO   +3 more
openaire   +3 more sources

Trypanosomicidal Kaurane Diterpenes fromWedelia paludosa

Planta Medica, 1999
The diterpenes ent-kaur-16-en-19-oic acid, ent-kaur-9(11),16(17)-dien-19-oic acid and 3 alpha-angeloiloxy-ent-kaur-16-en-19-oic acid were identified as trypanosomicidal compounds of the ethanolic extract from the aerial parts of Wedelia paludosa D.C.
R, Batista, E, Chiari, A B, de Oliveira
openaire   +2 more sources

Bioactive Kaurane Diterpenes and Coumarins from Fortunella margarita.

ChemInform, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
A M, el-Shafae, M A, Ibrahim
openaire   +2 more sources

Kauranes and related diterpenes from Adenostemma brasilianum

Phytochemistry, 1996
Aerial parts of Adenostemma brasilianum provided a number of new ent-kauranes oxygenated at C-1 and a modified abietane.
Alicia Bardón, Susana Montanaro, César A.N. Catalán, Jesús G. Díaz, Werner Herz   +4 more
openaire   +1 more source