Three sesquiterpene lactones from Helianthus niveus subsp. canescens and H. argophyllus
作者:Keisuke Watanabe、Nobuo Ohno、Tom J. Mabry
DOI:10.1016/s0031-9422(00)94519-9
日期:1985.12
Abstract Further investigation of the minor terpenoids in Helianthusniveus subsp. canescens and H. argophyllus afforded two known 12,8-fused sesquiterpenelactones, 3-acetylchamissonin and simsiolide as well as one new germacranolide, argophyllin C. Identification and structure elucidation of these lactones by 1 H NMR and chemical transformations are described.
摘要 向日葵亚种中次要萜类化合物的进一步研究。canescens 和 H. argophyllus 提供了两种已知的 12,8-稠合倍半萜内酯、3-乙酰花青素和 simsiolide 以及一种新的germacranolide、argophyllin C。描述了通过 1 H NMR 和化学转化对这些内酯的鉴定和结构解析。
Sesquiterpene lactones from Viguiera deltoidea
作者:Feng Gao、Tom J. Mabry
DOI:10.1016/s0031-9422(00)94518-7
日期:1985.12
Abstract Three sesquiterpene lactones, 2′,3′-dihydroniveusin-A, 2′,3′-dihydroniveusin-B and 3-acetylchamissonin, were isolated from the dichloromethane extract of leaves of Viguiera deltoidea . The structures were established on the basis of physical and spectroscopic data and that of 3-acetylchamissonin was also confirmed by X-ray analysis.
摘要 从Viguiera deltoidea 叶子的二氯甲烷提取物中分离出三种倍半萜内酯,2',3'-dihydroniveusin-A、2',3'-dihydroniveusin-B 和3-acetylchamissonin。这些结构是根据物理和光谱数据建立的,3-乙酰花香素的结构也通过 X 射线分析得到证实。