共查询到20条相似文献,搜索用时 0 毫秒
1.
Braulio M. Fraga Antonio G. González Pedro Gonzàlez Melchor G. Hernandez Carmen L. Larruga 《Phytochemistry》1985,24(3):501-504
Six new carotane sesquiterpenes, the p-hydroxybenzoate of epoxyjaeschkeanadiol the p-methoxybenzoate and p-hydroxybenzoate of lancerodiol, lancerodiol, the p-hydroxybenzoate of lancerotriol and the p-methoxybenzoate of linkitriol, and the already known p-hydroxybenzoate of jaeschkeanadiol have been isolated from Ferula lancerottensis. 相似文献
2.
Jesús G. Díaz Braulio M. Fraga Antonio G. González Pedro González Melchor G. Hernandez Jose M. Miranda 《Phytochemistry》1984,23(7):1471-1473
Two new natural triterpenes, 3β-acetoxyolean-9,12-diene and 3β-acetoxy-6β-hydroxyolean-9,12-diene, were isolated from Ferula linkii. 相似文献
3.
Fourteen daucane esters together with a known propiophenone 3,4-methylenedioxy-5-hydroxy-propiophenone, were isolated from Ferula communis subsp. communis. Except for the 6-(p-anisic acid) ester of jaeschkeanadiol all these esters are new. Structures were elucidated using spectral properties of the esters and their partial hydrolysis products. X-ray diffraction analysis of one of the compounds confirmed its structure including the stereochemical assignments made on the basis of spectral data. 相似文献
4.
The leaves and stems of Verbesina rupestris contain enantio-eudesmane sesquiterpenes, isolated as esters of cinnamic acid. This finding supports th 相似文献
5.
The structures of three new tricyclic sesquiterpenes from Eremophila georgei are described. The absolute stereochemistry of these sesquiterpenes is shown to be antipodal to that of the zizane sesquiterpenes of vetiver oil. 相似文献
6.
In a chemosystematic investigation of the fruits of Daucus carota L. we have isolated eleven compounds including four guaiane type sesquiterpenes (1–4), one eudesmane type sesquiterpene (5) and six other constituents (6–11). Among them, the five compounds 1–5 all are new for Daucus carota L. and all have been reported in Torilis japonica. The results show that Daucus carota L. is chemically similar with Torilis japonica providing chemical evidence for both species used as the same traditional Chinese medicine “nanheshi”. 相似文献
7.
From the roots of Ferula loscosii the coumarins umbelliprenin, coladin and coladonin and the new natural isovaleryl derivative of the latter have been isolated. A study which confirms the structure of coladonin and its difference from farnesiferol A is also given. 相似文献
8.
Heartwood extractives of C. dupreziana were investigated. Carvacrol methyl ether, cedrol and α-cedrene are present, together with sesquiterpene hydrocarbons. A comparison is made with those found in C. sempervirens and other Cupressus species. 相似文献
9.
From the aerial parts of Moscharia pinnatifida nine further α-isocedrene, two guaiane, three cyperene and two nerolidol derivatives were isolated. The structures were elucidated by high field NMR studies. Chemotaxonomic aspects are discussed. 相似文献
10.
Zeinab F. Mahmoud N.A.Abdel Salam Taha M. Sarg Ferdinand Bohlmann 《Phytochemistry》1981,20(4):735-738
The aerial parts of Inula crithmoides afforded a new carotane derivative and a eudesmanolide, inucrithmolide. The most probable structures were elucidated by the spectroscopic data and by some chemical transformations. 相似文献
11.
Two new sesquiterpenes, amotin and amoenin, of the picrotoxane group were isolated from Dendrobium amoenum. The constitution of amoenin was evident from spectral investigations and by its conversion into α-dihydro-picrotoxinin on oxidation with oxygen in the presence of platinum. The constitution of amotin was shown by its spectral properties and the conversion of aduncin into amotin by hydrogenolysis of its epoxide ring. That the configuration at C-4 in aduncin and amotin is R was supported by circular dichroism measurements on some derivatives of picrotoxinin and aduncin. 相似文献
12.
Yoshinori Asakawa Masao Toyota Masako Kano Tsunematsu Takemoto 《Phytochemistry》1980,19(12):2651-2654
Three new pinguisane-type sesquiterpenes, dehydropinguisanin, dehydropinguisenol and pinguisenal together with the previously known deoxopinguisone, pinguisanin, pinguisanolide and (—)-bicyclogermacrene, have been isolated from the liverwort, Trocholejeunea sandvicensis, and their structures have been established from spectral evidence. 相似文献
13.
Louis Piovetti Christian Francisco Ginette Pauly Otmane Benchabane Colette Bernard-Dagan Anne Diara 《Phytochemistry》1981,20(6):1299-1302
Analysis of wood essential oil of Cupressus dupreziana revealed 26 components: 13 monoterpenes and 13 sesquiterpenes. The main components were carv 相似文献
14.
Leaf pocket resins of 11 species of the tropical arborescent genus Hymenaea are virtually identical qualitatively, but of widely varying quantitative proportions. Within this large range of variability, several strong positive quantitative correlations between resin constituents were found, especially between caryophyllene and β-humulene and between γ-muurolene and δ-cadinene. These data lead to clarification of sesquiterpene biosynthetic routes in Hymenaea. In addition, quantitative relationships found among caryophyllene, α- and β-selinene, γ-muurolene and δ-cadinene are explained only with difficulty by long accepted biosynthetic pathways, and the intermediacy of germacrenes is suggested. 相似文献
15.
Yoshinori Asakawa Masao Toyota Tsunematsu Takemoto Claude Suire 《Phytochemistry》1979,18(8):1349-1353
Three new pinguisane-type sesquiterpenes, pinguisanin, pinguisanolide and β-pinguisenediol, together with the previously known deoxopinguisone, have been isolated from a European liverwort, Porella platyphylla, and their structures have been established by the spectral evidence and some chemical transformations. 相似文献
16.
Braulio M. Fraga Melchor G. Hernández Javier G. Luis Rafael Estevez Juan L. Báez Manuel Rivero 《Phytochemistry》1977,16(2):265-267
A new sesquiterpene ester, linkiol with a daucane skeleton was isolated from Ferula linkii. 相似文献
17.
The investigation of further Senecio species gave, in addition to known compounds, two new sesquiterpenes, an eremophilane and a eudesmane derivative. 相似文献
18.
Ayhan Ulubelen Nezhun Gören Ferdinand Bohlmann Jasmin Jakupovic Michael Grenz Nevin Tanker 《Phytochemistry》1985,24(6):1305-1308
In addition to previously obtained furanosesquiterpenes, two new eudesmanolides and a new glechomanolide were isolated from the fruits of Smyrnium cordifolium, while the roots gave two new eudesmanolides. The new compounds from the fruits were 1β-acetoxy-eudesman-4(15), 7(11)-dien-8,12-olide, 1β-acetoxy-8β-hydroxy-eudesman-4(15),7(11)-dien-8,12-olide, 1β,10α;4α,5β-diepoxy-8-hydroxy-glechomanolide, those obtained from the roots were smyrnicordiolide and the corresponding 8β-hydroxy derivative belonging to a new type of oxepine derivative. 相似文献
19.
Paolo Ceccherelli Massimo Curini Maria Carla Marcotullio Alessandro Menghini 《Phytochemistry》1985,24(12):2987-2989
Dittrichia viscosa afforded in addition to compounds reported previously, ilicic acid and two new sesquiterpene acids. The structures of the new compounds were established by chemical and spectral methods. 相似文献
20.
The aerial parts of Senecio anteuphorbium afforded a new sesquiterpene diester, its structure being elucidated by extensive NMR investigations of t 相似文献