Asteriscus graveolens (Forsk) Less. is a Saharan medicinal plant of Asteraceae family. A new acyclic sesquiterpene [7,12-dihydroxy-6,7-dihydro-5,(6) E-dehydronerolidol (3)] and sesquiterpene germacranolide lactone derivatives [9 beta-hydroxy-11 beta,13-dihydroparthenolide-9-O-beta-D-glucopyranoside (7) and 9 alpha-hydroxy-11 beta,13-dihydroparthenolide-9-O-beta-D-glucopyranoside (8)] along with eight known compounds were isolated from polar extracts of aerial parts. Their structures were established by the analysis of 1 D- 2 D-NMR and high-resolution mass spectrometry data. A. graveolens extracts and compounds showed a significant (P < 0.05) and concentration dependent inhibitory effect on the growth of Human Colon Carcinoma (HCT116) and Human Colorectal Adenocarcinoma (DLD1) cells with IC50 in a concentration range from 89.4 to 296.0 mu g/mL for extracts and from 32.6 to 728.1 mu g/mL for compounds. No cytotoxic effects was evidenced in normal Primary Human Dermal Fibroblast (HDFa) up to 0.050 mg/mL for extracts and 1.0 mg/mL for pure compounds.
New sesquiterpenes from Asteriscus graveolens
Mencherini T.
;Esposito T.;Rastrelli L.;Aquino R.;Gazzerro P.;
2019-01-01
Abstract
Asteriscus graveolens (Forsk) Less. is a Saharan medicinal plant of Asteraceae family. A new acyclic sesquiterpene [7,12-dihydroxy-6,7-dihydro-5,(6) E-dehydronerolidol (3)] and sesquiterpene germacranolide lactone derivatives [9 beta-hydroxy-11 beta,13-dihydroparthenolide-9-O-beta-D-glucopyranoside (7) and 9 alpha-hydroxy-11 beta,13-dihydroparthenolide-9-O-beta-D-glucopyranoside (8)] along with eight known compounds were isolated from polar extracts of aerial parts. Their structures were established by the analysis of 1 D- 2 D-NMR and high-resolution mass spectrometry data. A. graveolens extracts and compounds showed a significant (P < 0.05) and concentration dependent inhibitory effect on the growth of Human Colon Carcinoma (HCT116) and Human Colorectal Adenocarcinoma (DLD1) cells with IC50 in a concentration range from 89.4 to 296.0 mu g/mL for extracts and from 32.6 to 728.1 mu g/mL for compounds. No cytotoxic effects was evidenced in normal Primary Human Dermal Fibroblast (HDFa) up to 0.050 mg/mL for extracts and 1.0 mg/mL for pure compounds.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
