Acyclic diterpenic constituents from the roots of Calotropis procera (Ait.)‎ R. Br.

Abstract EN

Three new terpenic constituents characterized as 3,7,11,15-tetramethyl hexadecanyl 60- methyl hept-50-enyl ether (phytyl iso-octyl ether) (1), 2,6,10,14,18-pentamethylnonadecanoyl-b-Dglucopyranosyl-( 2 fi 1)-b-D-glucopyranosyl-(2 fi 1)-b-D-glucopyranoside (procerasesterterpenoyl triglucoside) (3) and 3,7,11,15 tetramethylhexadecanoyl-b-D-glucopyranosyl-(2 fi 1)-b-D-glucopyranosyl-( 2 fi 1)-b-D-glucopyranosyl(2 fi 1)-b-D-glucofuranoside (dihydrophytoyl tetraglucoside) (4) have been isolated for the first time from the roots of Calotropis procera (Ait.) R.

Br.

(Asclepiadaceae) along with the known compound 1,2-dihexadecanoyl-3-phosphatyl glycerol (2).

The structures of all these phytoconstituents have been established by spectral data analysis and chemical reactions.