Spiromines A, B, C, and D New Diterpene Alkaloids from Spiraea japonica var. acuminata Franch

Spiromines A, B, C, and D New Diterpene Alkaloids from Spiraea japonica var. acuminata Franch Spiromines A, B, C, and D New Diterpene Alkaloids from Spiraea japonica var. acuminata Franch The structures of four new diterpene alkaloids, spiramines A, B, C, and D. New Spiramines from Spiraea japonica var. ovalifolia Diterpene alkaloids from roots of Spiraea japonica New Diterpene Alkaloids from the Roots of <i>Spiraea </i><i>japonica</i> Three New Diterpene Alkaloids from Spiraea japonica Three New Diterpene Alkaloids from Spiraea japonica New Diterpene Alkaloids from the Roots of Spiraea japonica The Structures of Spiramines E, F and G; The New Diterpene Alkaloids from Spiraea japonica var. Acuminata Franch