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Published on: October 4, 2019
5''-Hydroxydigipenstroside and Penstriatoside: Novel Dimeric and Trimeric Open-Chain Monoterpene Glucosides from
D Teborg1, A Steigel, P Junior
1Institut für Pharmazeutische Biologie der Heinrich-Heine Universität Düsseldorf, Universitätsstraße 1, D-4000 Düsseldorf 1, Federal Republic of Germany.
Abstract:
A new dimeric open-chain monoterpene glucoside, 5''-hydroxydigipenstroside {1-beta- D-glucopyranosyl)-8-[5'',8''-dihydroxy-2'',6''-dimethyl-2''( E),6''( E)-octadienoyl]-5,8-dihydroxy-2,6-dimethyl-2( E),6( E)-octadienoate} has been isolated from leaves of PENSTEMON DIGITALIS Nutt. In addition, the novel trimeric open-chain monoterpene glucoside penstriatoside {1-(beta- D-glucopyranosyl)-8-[5'',8''-dihydroxy-2'',6''-dimethyl-2''( E),6''( E)-octadienoyl-8''-(5''',8'''-dihydroxy-2''',6'''-dimethyl-2''' ( E)6'''( E)-octadienoyl)]-5,8-dihydroxy-2,6-dimethyl-2 ( E),6( E)-octadienoate} has been encountered. The structures of both compounds have been elucidated by spectroscopic means (FD-, FAB-mass, (1)H-, (13)C-NMR, COSY, DEPT).
