Abstract

GLYCOSYLXANTHONES FROM ACORUS CALAMUS

Deepa Chauhan*

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Abstract

Two new xanthone glycoside, 3-O--D-glucopyranosyl-1.6-dihydroxy xanthone 1 and 3-C--D-glucopyranosyl-1-hydroxy-7-methoxyxanthone 2 have been isolated from the rihzome of Acorus calamus. Their structures have been established by spectroscopic studies (FABMS, HNMR, CNMR, DEPT and COSY) and by comparison with closely related compounds. Acorus calamus belongs to the family Araceae. It grows in India,[1] Ceylon and Sikkim. Its rhizome has medicinal properties against bed bugs, mouth, lice, emetic stomach in dyspep etc.[2] Here we report the isolation and structural elucidation of two new O-and C-Glycosylxanthones named as 3-O--D-glucopyranosyl-1.6-dihydroxyxanthone 1 and 3-C--D-glucopyranosyl-1-hydroxy-7-methoxy-xanthone 2.

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