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1.
Three new eriophyid species (Phyllocoptinae), Shevtchenkella denticulata
sp. n., Notallus pestehae
sp. n. and Echinacrus ruthenicus
sp. n., were described from Eryngium thyrsoideum Boiss. (Apiaceae), Pistacia vera L. (Anacardiaceae) and Lycium ruthenicum Murray (Solanaceae), respectively. All the three new species were collected from southwest of the East Azerbaijan province, Iran in 2011. It is the first record of an eriophyoid mite collected from E. thyrsoideum and L. ruthenicum and the first record of Notallus from Anacardiaceae plant family. 相似文献
2.
Two new amides (1 and 2) and four known analogues (3–6) were isolated from the roots of Anisodus tanguticus (Maxim.) Pascher. Their structures were determined by extensive spectroscopic analyses. The absolute configuration of compound 1 was determined by comparison of the calculated optical rotation (OR) value with the experimental OR value. All known amides were isolated from the genus Anisodus for the first time, of which compounds 3, 5, and 6 were first reported from the family Solanaceae. Furthermore, the chemotaxonomic significance of these secondary metabolites is discussed. 相似文献
3.
从红树林树植物瓶花木(Scyphiphora hydrophyllacea Gaertn. f.)的乙醇提取物中分离得到5个化合物,通过波谱分析,鉴定其结构分别为:shanzhigenin methyl ester (1)、1-epishanzhigenin methyl ester (2)、山柰酚 (3)、芹菜素 (4)和 5,7,2'-trihydroxy-3,6,8,4',5'-pentamethoxyflavone (5)。以上化合物均为首次从瓶花木中分离得到。细胞毒活性测试结果表明,化合物1和2的混合物对人肝癌细胞(SMMC-7721)的增殖有较强的生长抑制活性。 相似文献
4.
Three novel compounds with spiro-5, 6-lactone ring skeleton has been isolated from the fermentation broth of Massrison sp. which could be isolated repeatedly from wild Rehmannia glutinosa. Psetariae oryza P-2b was applied to guide fractionation of bioactive compounds produced by Massrison sp. The molecular structures were established by a variety of one- and two-dimensional NMR experiments and the compounds with similar skeleton were reported for the first time from endophytic fungi of terraneous plant. Antifungal and cytotoxic activities of the compounds were tested, compounds 2 and 3 displayed stronger antifungal and cytotoxic activities. The compounds have the potential to be antibiotic against fungal pathogens and tumor cells. 相似文献
5.
Si-Hui Mi Ye Chang Xin Zhang Jiao-Yang Hou Jia-Qi Niu Jin-Le Hao Guo-Dong Yao Bin Lin Xiao-Xiao Huang Ming Bai Shao-Jiang Song 《化学与生物多样性》2023,20(9):e202300941
Four pairs of aryldihydronaphthalene-type lignanamide enantiomers were isolated from Solanum lyratum (Solanaceae). The enantiomeric separation was accomplished by chiral-phase HPLC, and five undescribed compounds were elucidated. Analysis by various spectroscopy and ECD calculations, the structures of undescribed compounds were illuminated. The neuroprotective effects of all compounds were evaluated using H2O2-induced human neuroblastoma SH-SY5Y cells and AchE inhibition activity. Among them, compound 4 a exhibited remarkable neuroprotective effects at high concentrations of 25 and 50 μmol/L comparable to Trolox. Compound 1 a showed the highest AchE inhibition with the IC50 value of 3.06±2.40 μmol/L. Molecular docking of the three active compounds was performed and the linkage between the compounds and the active site of AchE was elucidated. 相似文献
6.
Yang-Qing He Zhan-Ying Ma Qian Yang Bao-Zhong Du Zhan-Xin Jing Bing-Hua Yao Mark T. Hamann 《Biochemical Systematics and Ecology》2010
Ten compounds (1–10) including two C20-diterpenoid alkaloids, five C19-diterpenoid alkaloids, one triterpenoid and two flavonoids were isolated from the whole plant material of Delphinium albocoeruleum Maxim for the first time. The chemotaxonomic significance of these compounds was summarized. 相似文献
7.
Alfonso Romo de Vivar Ana L. Pérez Héctor Flores Lydia Rodríguez-Hahn Manuel Jiménez 《Phytochemistry》1978,17(2):279-280
Four sesquiterpene lactones were isolated from several populations of Parthenium confertum var. lyratum (Gray) collected in Sierra de Arteaga, southern Coahuila. Three of the compounds, hysterin, tetraneurin E and hymenin were previously isolated from other Parthenium species. The fourth constituent is the new cyclopropanoid sesquiterpene dilactone confertdiolide which represents a new structural type. The photolytic conversion of hymenin into confertdiolide confirmed its structure. 相似文献
8.
《Process Biochemistry》2007,42(5):899-903
Solanum lyratum, a medicinal plant, has been used to treat cancers, tumors, and warts for many years. Undifferentiated cell cultures were mainly used to study the precursor-feeding strategy for the production of secondary metabolites of α-solanine, solanidine, and solasodine for pharmaceutical usage. In this study, S. lyratum cells were fed with exogenous plant sterols including cholesterol, stigmasterol, and mixed sterols (β-sitosterol, campesterol, and dihydrobrassicasterol). The results showed that none of the plant sterols exhibited an effect on cell growth as compared to that of the control. Cellular concentrations of solanidine and solasodine were relatively higher than α-solanine levels in all the treatments. The maximal solasodine level in cells was 11.19 mg/g dry weight (DW) after 0.05–1 mg/l stigmasterol feeding, which was about 10-fold higher than the control. With regard to solanidine levels, the maximal level in cells was 5.84 mg/g DW after feeding with 20 mg/l cholesterol. This is the first report on the in vitro enhancement of solanidine and solasodine, steroidal alkaloids with medicinal value, from S. lyratum. 相似文献
9.
The phytochemical investigation of Salacia impressifolia (Miers) A. C. Smith led to the isolations of 15 compounds, including triterpene quinonemethides, which are employed as the common characteristic constituents of the Celastraceae family. Pristimerin (9) and tingenone (12) were isolated as the main compounds in the studied tissues. Additionally, friedelane, lupane, oleanane, and ursane triterpenoids were also isolated. All of them were isolated from this plant for the first time. 相似文献
10.
Fourteen compounds were isolated from Cremanthodium brunneo-pilosum, including two steroids (1 and 14), five sesquiterpenoids (2–6), six flavonoids (7–12) and one isoflavone (13). Graveolide (2) was obtained from a plant for the first time. 5,7-Dihydroxy-3,6,3′,4′-tetramethoxy-flavone (9), centaureidin (10) and tectoridin (13) have not been isolated from the family Compositae. The chemotaxonomic data support the relationship between this species and others in the family Compositae. 相似文献
11.
Six polyprenylated benzophenone derivatives (1–6) with the central bicyclo[3.3.1]nonane-2,4,9-trione core were isolated from Clusia burle-marxii trunks. Despite their highly conserved structural characteristics, this is the very first time that these polyprenylated benzophenone derivatives are isolated from a single plant species, highlighting the biochemical plasticity of Clusia burle-marxii to produce such unique class of bioactive compounds. Compounds 1, 2, and 6 are reported for the first time in Clusia burle-marxii, whereas compounds 3, 4 and 5 are reported for the first time in the Clusiaceae family. Their structures were established by careful analysis of spectroscopic data, including 1H NMR, 13C NMR, and 2D-NMR (COSY, NOESY, HSQC, HMBC). These polyprenylated benzophenone derivatives have the potential to be used as chemosystematics biomarkers for the family Clusiaceae. Their putative biosynthesis pathway is also discussed. 相似文献
12.
Jia Wang Jing LiuQingfa Wen Congying LiYanfang Li Bing LianHuan Tang Tian Yao 《Biochemical Systematics and Ecology》2010
Juncus setchuensis is a perennial herbaceous plant found in marshes, swamps, and other poorly drained sites. Despite being so abundant in the southwest of China, only one literature reference has reported about its chemical components. The present phytochemical investigation on this plant led to isolations of 13 compounds (including four 9,10-dihydrophenanthrenes, one phenanthrene, one flavonone, two mono-aromatics, one steroid, one anthraquinone and three diterpenoid tanshinones), five of them were isolated form this plant for the first time, four of them, one anthraquinone and three diterpenoid tanshinones, were reported for the first time in this genus. The presence of phenanthrenes, 9,10-dihydrophenanthrenes in the Juncus genus could be of taxonomic importance. 相似文献
13.
The phytochemical study of the leaves of Rhododendron amesiae (Ericaceae) led to the isolation and identification of 19 compounds, including six diterpenoids (1–6), six triterpenoids (7–12) and seven flavonoids (13–19). The chemical structures of these compounds were identified by spectroscopic data, as well as by comparison with previously reported data in literature. This is the first systematic study on the chemical constituents of Rhododendron amesiae. All the compounds were isolated from this plant for the first time. Compounds 12, 14 and 15 were first isolated and reported from the genus Rhododendron and the family Ericaceae. Furthermore, the chemotaxonomic significance of these compounds was discussed. 相似文献
14.
Phytochemical investigation from the roots of Anemone vitifolia Buch.-Ham. led to the isolation of eight compounds, including one triterpenoid saponin, two sugars, one coumarin, one amide, one saturated alkane, one olefin and one fatty acid. The structures of these metabolites were elucidated by spectroscopic data and comparisons with the data available in the literature. Among them, compound 7 ((6Z,9Z,12Z)-6,9,12-Eicosatriene) was isolated for the first time as a natural product. Furthermore, compounds 2 (D-(+)-raffinose), 3 (mixture of β-D-fructopyranose and β-D-fructofuranose) and 5 (bonaroside) were obtained from the Ranunculaceae family for the first time. Compounds 4 (siderin) and 6 (n-hexadecane) were isolated from A. vitifolia for the first time. The chemotaxonomic significance of the isolated compounds was discussed. 相似文献
15.
Chemical investigation of the root and rhizome of Silene tatarinowii Regel led to the isolation of nine ecdysteroids (1–9) and one sterol (10). All the compounds were determined on the basis of MS and NMR and by comparison with those in the literature. All these compounds were isolated from S. tatarinowii for the first time. Furthermore, compounds 7–10 were isolated from Silene genus for the first time, of which compounds 7 and 8 were isolated from Caryophyllaceae family members for the first time. This is the first study to report the chemical constituents of S. tatarinowii and the chemotaxonomic relationships between Silene and other genera of Caryophyllaceae. 相似文献
16.
17.
Three perylenequinones, the methylated 12-epi-stemphytriol (1), dihydroalterperylenol (2), and alterperylenol (3), were isolated from cultures of Curvularia lunata (LBQM-04) on malt extract broth. All these compounds were obtained from this particular fungus for the first time. Structures of compounds were determined based on MS and NMR spectra, as well as by comparison with the literature reports. The isolation of these phytotoxic reduced perylenequinones from the Curvularia genus suggested that they may occur in any anamorphic fungi belonging to the Pleosporaceae family. 相似文献
18.
A phytochemical investigation of the aerial parts of Clematis akebioides (Maximowicz) Veitch led to the isolation of eighteen compounds, including two benzenoids (1, 2), one linear monoterpene glycoside (3), and fifteen triterpenoid saponins (4–18). The structural elucidation of these compounds was determined by using spectroscopic methods and comparison with the literature. All of these compounds were obtained from C. akebioides for the first time, and compounds 1, 2 and 18 were isolated from the Ranunculaceae family for the first time. Furthermore, the chemotaxonomic significance of these compounds was discussed. 相似文献
19.
Phytochemical investigation on the aerial parts of Psychotria yunnanensis led to the isolation of four norisoprenoids (1–4), one monoterpenoid (5), and eleven phenolic compounds (6–16). To our knowledge, all compounds were isolated from this plant for the first time. Compounds 2–16 were reported for the first time from the genus Psychotria. The chemotaxonomic significances of these compounds were summarized. 相似文献
20.
从红厚壳(Calophyllum inophyllum Linn.)枝条乙醇提取物中分离得到11个化合物,通过光谱分析,鉴定其结构为:6-羟基-2,3-二甲氧基 酮 ( 1 ) ,1,3,7-三羟基 酮 ( 2 ) ,1,3,7-三羟基-8-甲氧基 酮( 3 ) ,7-羟基-1,3-二甲氧基 酮( 4 ) ,伪蒲公英甾醇( 5 ) ,1,3,6-三羟基-5,7-二甲氧基 酮( 6 ) ,2-羟基-1-甲氧基 酮 ( 7 ) ,2-羟基-1,8-二甲氧基 酮 ( 8 ) ,1,3,5-三羟基-2-甲氧基 酮 ( 9 ) ,4-羟基 酮 ( 10 ) ,1,3,5-三羟基 酮 ( 11 ) 。化合物 2 ~ 5 为首次从红厚壳属植物中得到,化合物 6 ~ 8 为首次从该植物中得到,化合物 1 为一新的天然产物。细胞毒活性测试结果表明,化合物 9 对人胃癌细胞(SGC-7901)的增殖显示出生长抑制活性, 其IC50值为1.8×10-5 mol/L。 相似文献