下面的5篇外文，会能帮我下，万分感谢
1 Isolation and characterisation of novel antioxidant constituents of Croton zambesicus leaf extract.
2 Structure elucidation of casbane diterpenes from Croton argyrophyllus.
3 Isolation and characterization of crotosparsamide, a new cyclic nonapeptide from Croton sparsiflorus.
4Laevigatbenzoate from Croton laevigatus Vahl.
5Crotonionosides A-G: megastigmane glycosides from leaves of Croton cascarilloides Räuschel
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1 Isolation and characterisation of novel antioxidant constituents of Croton zambesicus leaf extract.
2 Structure elucidation of casbane diterpenes from Croton argyrophyllus.
3 Isolation and characterization of crotosparsamide, a new cyclic nonapeptide from Croton sparsiflorus.
4Laevigatbenzoate from Croton laevigatus Vahl.
5Crotonionosides A-G: megastigmane glycosides from leaves of Croton cascarilloides Räuschel
去文献版求助吧