Amethystoidin A

excisoides and their structures were identified,one was named as excisoidesin A(Ⅰ),a new diterpenoid and the other was a known compound,oleanolic acid(Ⅱ).

结果从拟缺香茶菜分离鉴定2个化合物,化合物Ⅰ命名为拟缺香茶菜甲素(excisoidesinA);化合物Ⅱ鉴定为齐墩果酸。

Two new ent-kauranoids, tenuifolin A (3β,6α,15β-trihydroxy-1α,7β-diacetoxy-11β,16β-epoxy-ent-kaurane) (1) and tenuifolin B (1α,6α,11β-trihydroxy-3β,7β-diacetoxy-ent-kaur-16-en-15-one) (2), together with four known compounds were isolated from the aerial parts of Isodon tenuifolia (W.

其中化合物 1和 2为新的对映_贝壳杉烷二萜化合物 ,即细叶香茶菜甲素 (3β ,6α ,15 β_trihydroxy_1α ,7β_diacetoxy_11β ,16 β_epoxy_ent_kaurane) (1)和细叶香茶菜乙素 (1α,6α ,11β_trihydroxy_3β,7β_diacetoxy_ent_kaur_16_en_15_one) (2 )。