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从豆荚软珊瑚(Lobophytum s.p.)中分离得一种十四元环二萜内酯,L402,C_(22)H_(30)O_5.根据L402及其氢化产物的各种波谱数据测定其化学结构,并推测它是L403的生源前身.
A fourteen - membered ring diterpene lactone, L402, C_ (22) H_ (30) O_5 was isolated from Lobophytum sp, and its chemical structure was determined according to various spectral data of L402 and its hydrogenated products. And speculated that it is the predecessor of L403 students.