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2 Polish Journal of Chemistry

2 2005

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Stachyfloroside E: A New Acylated Flavone Glycoside from Stachys parviflora

Ahmad V., Arshad S., Bader S., Iqbal S., Tareen R.

Polish Journal of Chemistry

2005

Vol. 79 / nr 8

1295-1300

Phytochemical investigations of the whole plant of Stachys parviflora (Lamiaceae) resulted in the isolation of a new acylated flavone glycoside. The structure of the new compound, named stachyfloroside E, was established as 6,8-dihydroxy-2-(4',5'-dihydroxy)-7[-6-O-acetyl-_-Dgalactopyranosyl( 1--2)-beta-D-glucopyranosyl)oxy]-4H-1-benzopyran (1). The structure elucidation of the new compound was based primarily on 1D and 2D NMR analysis, including COSY, HMBC and HMQC correlations.

Brauhenefloroside C: A New Acylated Flavone Glycoside from the Fruits of Stocksia brauhica

Ahmad V., Bader S., Arshad S., Iqbal S., Mohammad F., Tareen R.

Polish Journal of Chemistry

2005

Vol. 79 / nr 12

1883-1888

Phytochemical investigations of the fruits of Stocksia brauhica (Sapindaceae) resulted in the isolation of a new acylated flavone glycoside. The structure of the new compound brauhenefloroside C (1) was established as 7-[(6-O-(2E-3-(4-hydroxyphenyl)- 1-oxo-2-propenyl)-beta-D-glucopyranosyl)]-(1_2)-[(6-deoxy- alfa-L-mannopyranosyl)]-( 1_3)-[(6-deoxy-alfa -L-mannopyranosyl]-oxy)-5-hydroxy-2-(4'-hydroxy-phenyl)- 4H-1-benzopyran. The structure elucidation of the new compound was based primarily on 1D and 2D NMR analysis, including COSY, 2D J-resolved, HMBC and HMQC correlations.