三裂叶蟛蜞菊的化学成分研究

Study on chemical constituents of Wedelia trilobata

从三裂叶蟛蜞菊全草甲醇提取物中分离得到1个新的化合物——蒲公英烷-14-烯-30-醛-3β-棕榈酸酯(1),以及6个已知化合物,分别鉴定为对映-贝壳杉-16-烯-19-酸(2)、16α-羟基-对映-贝壳杉烷-19-酸(3)、蒲公英赛醇(4)、β-香树脂醇(5)、1β-乙酰氧基-4α,9α-二羟基-6β-异戊酰氧基卤地菊内酯(6)、豆甾醇(7)。化合物结构结合红外、核磁、高分辨质谱等现代波谱技术进行鉴定。

A new taraxer-based triterpenoid ester,taraxer-14-en-30-al-3β-O-palmitate(1),was isolated from the whole plant of Wedelia trilobata,along with six known compounds,ent-kaur-16-en-19-oic acid(2),16α-hydroxy-ent-kauran-19-oic acid(3),tara-xerol(4),β-amyrin(5),1β-acetoxy-4α,9α-dihydroxy-6β-isobutyroxyprostatolide(6),and stigmasterol(7).Their structures were elucidated with use of a combination of spectroscopic techniques(IR,HR-ESI-MS,1 D,2 D NMR data)and chemical methods.