Two new C20 hetisine-type diterpenoid alkaloids, spirafine III (1) and spirafine II (2), were isolated from the roots of Spiraea fritschiana var, parvifolia. Their structures were elucidated based on HRMS: IR and NMR ...Two new C20 hetisine-type diterpenoid alkaloids, spirafine III (1) and spirafine II (2), were isolated from the roots of Spiraea fritschiana var, parvifolia. Their structures were elucidated based on HRMS: IR and NMR spectral data, and chemical reaction.展开更多
文摘Two new C20 hetisine-type diterpenoid alkaloids, spirafine III (1) and spirafine II (2), were isolated from the roots of Spiraea fritschiana var, parvifolia. Their structures were elucidated based on HRMS: IR and NMR spectral data, and chemical reaction.
