A new isopimarane-type diterpene （liwariverol, 1） and eight known compounds were isolated and characterized from the EtOAc extract of the whole plant of Potamogeton crispus. The structure of 1 was elucidated to be 1...A new isopimarane-type diterpene （liwariverol, 1） and eight known compounds were isolated and characterized from the EtOAc extract of the whole plant of Potamogeton crispus. The structure of 1 was elucidated to be 17-hydroxy-8c^H-isopimara-9（11）,15- diene by means of spectroscopic methods. Among the isolates, crenulatoside A （2）, an acyclic sesquiterpene glycoside, was found to have anti-oxidative activity with enhancement of the expression of the NAD（P）H：quinone oxidoreductase 1 （NQO1） in human neuroblastoma SH-SY5Y cells at 100 μmol/L after a 24-h incubation.展开更多
基金supported by an NSFC grant(No90713040)STCSM grants(Nos06DZ19002,07DZ22006, and 11DZ1921203)
文摘A new isopimarane-type diterpene （liwariverol, 1） and eight known compounds were isolated and characterized from the EtOAc extract of the whole plant of Potamogeton crispus. The structure of 1 was elucidated to be 17-hydroxy-8c^H-isopimara-9（11）,15- diene by means of spectroscopic methods. Among the isolates, crenulatoside A （2）, an acyclic sesquiterpene glycoside, was found to have anti-oxidative activity with enhancement of the expression of the NAD（P）H：quinone oxidoreductase 1 （NQO1） in human neuroblastoma SH-SY5Y cells at 100 μmol/L after a 24-h incubation.
