J. Rodilla, D. Mendonça, M. I. Ismael, J. A. Figueiredo, Maria Lücia A. Silva, E. Lopes
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引用次数: 7
摘要
摘要对粘盐(S. jo o da Pesqueira, Portugal)正己烷提取物的酸性和中性部分进行了研究，分离出了多种已知的具有正卤烷骨架的二萜类化合物。目前已分离出5个新化合物，1个具有对卤烷骨架，4个具有缬烷骨架，其中2个具有降解的缬烷骨架。通过二维光谱法(1H-13C, HMQC和HMBC)测定了这些化合物的结构，分别为:二甲基1(10)- halimin -15,18-dioate，二甲基3,19-dinor-15- valparen2 -2,4-dioate，甲基16-no -2,3- covalpara-3,15-dioxo-2-oate, 1,3,5,15- valparateene和3r -4α-甲氧基-15- valparen2 -one。
BI- and Tricyclic Diterpenoids from Halimium viscosum
Abstract The study of the acid and neutral parts of the n-hexane extract of Halimium viscosum (S. João da Pesqueira, Portugal) has led to the isolation of various known diterpenoids with the ent-halimane skeleton. Five new compounds have now been isolated, one with the ent-halimane skeleton, and four with the valparane skeleton, two of them with the valparane skeleton degraded. The structures of these compounds, determined by spectroscopic methods using 2D experiments (1H-13C, HMQC and HMBC), were dimethyl 1(10)-halimen-15,18-dioate, dimethyl 3,19-dinor-15-valparen-2,4-dioate, methyl 16-nor-2,3-secovalpara-3,15-dioxo-2-oate, 1,3,5,15-valparatetraene and 3R-4α-methoxy-15-valparen-2-one.
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