Spiramine Q, a diterpene, was isolated from a Chinese herbal plant Spiraea japonica var. incisa Yu. Born's and Wan HY's methods were used to investigate effects of spiramine Q on rabbit platelet aggregation and serotonin release, respectively. Its antithrombotic effect in mice was also evaluated by
Six diterpene alkaloids with an atisine-type C(20)-skeleton isolated from the Chinese herbal medicines Spiraea japonica var. acuta and S. japonica var. ovalifolia, as well as eight derivatives of spiramine C and spiradine F were evaluated for the ability to inhibit aggregation of rabbit platelets
The characteristic components of Spiraea japonica complex, which consists of seven varieties, are the hetisine- and atisine-type diterpene alkaloids, and the atisane-type diterpenes. From this complex, 20 hetisines, 37 atisines and 7 diterpenes were isolated during 1964-2001, including the
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