前文报道了从浙贝母(Fritillaria thunbergii Miq.)鳞茎中分离到浙贝甲素(peimine,Ⅰ)、浙贝乙素(peiminine,Ⅱ)、eduardine(Ⅲ)及二个新生物碱即浙贝宁(zhebeinine,Ⅳ)和浙贝丙素(zhebeirine,Ⅴ),它们均为具有C-去甲-D-高甾基本骨架的生物碱。 最近又从该植物中分得一新的微量生物碱命名为浙贝酮,本文报告该生物碱的分离和结构鉴定。 浙贝酮(Ⅵ)为无色针晶(丙酮),mp 181～183℃,高分辨质谱测得分子式C_(27)H_(43)NO_3, In the previous report, isolated from the bulbs of Fritillaria thunbergii Miq., peimine (I), peiminine (II), eduardine (III), and two new alkaloids, Zhebei Zhebeinine (IV) and zhebeirine (V), both of which are alkaloids having the basic skeleton of C-nor-D-sorghum. Recently, a new trace alkaloid was named from this plant as zibelone. The isolation and structure identification of this alkaloid was reported in this paper. Tefethone (VI) is a colorless needle crystal (acetone), mp 181-183°C, and molecular formula C_(27)H_(43)NO_3 measured by high resolution mass spectrometry.