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1.
A new benzopyran derivative, malloapeltic acid (1), along with seven known compounds, was isolated from the roots of Mallotus apelta. The structure of the new compound 1 was elucidated by spectroscopic data analysis. The known compounds 2–8 were identified by comparison of their spectroscopic data with reported values in the literature. Compound 1 showed strong anti-HIV activity in vitro. 相似文献
2.
Shou-Yuan Wu Yan-Hui Fu Qi Zhou Meng Bai Guang-Ying Chen 《Natural product research》2018,32(8):953-958
A new dihydrochalcone glycoside, phloretin-4-O-β-D-glucopyranoside (1), together with seven known flavonoids (2–8), were isolated from the stems of Homalium stenophyllum. The structure of 1 was elucidated by extensive spectroscopic methods and the known compounds were identified by comparisons with data reported in the literature. The known compounds (2–8) were isolated from the genus Homalium for the first time. All compounds were evaluated for their antibacterial activities against six pathogenic bacteria in vitro. 相似文献
3.
I. M. Chung M. Ali S. J. Hahn N. A. Siddiqui Y. H. Lim A. Ahmad 《Chemistry of Natural Compounds》2005,41(2):182-189
Five new compounds, orizaterpenol (1), orizaterpenoid (2), orizaterpenyl benzoate (3), orizanor-diterpenyl benzoate (4), and orizaditerpenyl benzoate (5), along with nine known compounds, were isolated and identified from the rice hulls of Oryza sativa. Their structures were elucidated with the help of different spectroscopic techniques. Orizaterpenol (1) and the known momilactone A (6) and B (7) were found to have cytotoxic effects against P388 murine leukaemia cells, while the other new and known compounds exhibited weak cytotoxicity.__________Published in Khimiya Prirodnykh Soedinenii, No. 2, pp. 146–151, March–April, 2005. 相似文献
4.
Yan-gang Cao Xiao-ke Zheng Fang-fang Yang Fang Li Man Qi Yan-li Zhang 《Natural product research》2018,32(4):391-398
A new biphenyl-furocoumarin, named morescoumarin A (1), and a new prenylated flavanone, named morflavanone A (2) were isolated from the root bark of Morus alba L., together with four known compounds (3–6). Their structures were determined by extensive spectroscopic analyses and comparison with literature data. The cardioprotective effects of these compounds against doxorubicin-induced cell death were evaluated by MTT method. 相似文献
5.
Guangmiao Fu Wenjuan Li Runzhi Zhang Kai Tian Shuqun Hou 《Natural product research》2018,32(4):399-405
A new unique isoflavone derivatives with a cyclic-monoterpene-substituent, ficusin C (1), together with five known compounds (2–6), were isolated from the rhizomes of Ficus tikoua. Their structures were elucidated on the basis of spectroscopic data interpretation, mass spectrometric analysis and comparison with literature data of related compounds. Antioxidant and α-glucosidase inhibitory activities of these compounds were evaluated by 1,1-diphenyl-2-picryhydrazyl (DPPH) radical-scavenging assay and α-glucosidase inhibitory experiment, respectively. 相似文献
6.
Yan-Lei Ma Chao Zhang Wan-Hui Zhao Shi Shi Dan-Nv He Pan Zhang 《Natural product research》2018,32(18):2159-2164
A new furanocoumarin, clauhainanin A (1), together with seven known furanocoumarins (2–8), were isolated from the stems and leaves of Clausena hainanensis. The structure of 1 was elucidated by extensive spectroscopic methods and the known compounds were identified by comparisons with data reported in the literature. All known compounds (2–8) were isolated from C. hainanensis for the first time. All isolated compounds were evaluated for their cytotoxicities against five human cancer cell lines: HL-60, SMMC-7721, A-549, MCF-7 and SW480 in vitro. Compounds 1–8 exhibited significant inhibitory effects with IC50 values ranging from 1.36 to 18.96 μM. 相似文献
7.
Jia-Ting Wu Cai-Juan Zheng Bin Zhang Xue-Ming Zhou Qi Zhou 《Natural product research》2019,33(1):34-40
Two new compounds (1 and 2), together with six known compounds (3–8), were obtained from the Cladosporium sp. JJM22, an endophytic fungus isolated from the stem bark of the mangrove plant Ceriops tagal collected in South China Sea. Their structures were elucidated on the basis of detailed spectroscopic analysis. The absolute configurations of 1 and 2 were confirmed by the comparison of optical rotation and the CD data with those of known compounds. The inhibitory activities of the isolated compounds against six terrestrial pathogenic bacteria and human cervical carcinoma Hela cell line were evaluated. Compound 3 exhibited a broad spectrum of antibacterial activities. 相似文献
8.
Two new γ-pyrones, xylaropyrones B (1) and C (2), together with three known compounds, xylaropyrone (3), annularin A (4) and annularin C (5), were isolated from solid cultures of the endophytic fungus Xylaria sp. SC1440. The structures of these compounds were determined mainly by analysis of their NMR spectroscopic data. The relative configurations of 1 and 2 were assigned on the basis of J-based configurational analysis, and the absolute configurations were established by experimental and TDDFT calculated ECD spectra. The isolated compounds were evaluated for cytotoxic and tyrosinase inhibitory activity. 相似文献
9.
El Sayed H. El Ashry Atta-ur-Rahman M. Iqbal Choudhary Sherif H. Kandil Ahmed El Nemr Tahsin Gulzar Aida H. Shobier 《Chemistry of Natural Compounds》2011,47(3):335-338
Phytochemical investigations on a marine green alga Ulva lactuca led to the isolation of two new compounds (E)-6-heptacosen-5-one (1) and (E)-6-octadecen-5-ol (2), along with four known compounds, (Z)-10-hexacosene (3), docosanoic acid (4), palmitic acid (5), and isofucosterol (6). Compounds 3 and 4 were isolated for the first time from this species. The structures of the compounds were deduced with the help of modern
spectroscopic techniques. 相似文献
10.
Abrar Ahmed Wei Li Jun-Sheng Zhang Pek-Ha Sam Yi-Hong Zou 《Natural product research》2018,32(2):175-181
Phytochemical investigation of Cephalotaxus sinensis has led to the isolation of a new bisabolane sesquiterpenoid (1), a new abietane diterpenoid (2), and 13 known compounds (3–15). Their structures were elucidated by extensive spectroscopic analysis (MS, UV, IR, and NMR). 相似文献
11.
Qinpeng Shen Xingmeng Xu Fengmei Zhang Nengjun Xiang Pei He Xiaoxi Si 《Natural product research》2016,30(13):1464-1469
Two new benzolactones, 5-methyl-6-prenyl-isobenzofuran-1(3H)-one (1), 5-hydroxymethyl-6-prenyl-isobenzofuran-1(3H)-one (2), together with four known phenolic compounds (3–6), were isolated from the leaves of Nicotiana tabacum. Their structures were elucidated by spectroscopic methods, including extensive 1D and 2D NMR techniques. Compounds 1–6 were evaluated for their anti-tobacco mosaic virus (anti-TMV) activities. The results showed that compounds 1–6 exhibited high anti-TMV activities with inhibition rates in the range of 16.9–26.2%, respectively. 相似文献
12.
Fungus Alternaria brassicae 93 isolated from crinoid (Comanthina schlegeli), which was collected from the South China Sea. Six compounds were isolated from A. brassicae 93, including one new compound (1), along with five known compounds, ochratoxin A methyl ester (2), cis-4-hydroxym-ellein (3), (R)-7-hydroxymellein (4), trans-2-anhydromevalonic (5) and protocatechuic acid (6). Their structures were determined by spectroscopic methods and comparison with reported data. Cytotoxicity against two human cancer cell lines and antibacterial activity against twelve aquatic bacteria of compound 1 were also tested. 相似文献
13.
Zhi-Hua Jiang Yan-Ping Liu Miao He Jin-Hua Zhao Ting-Ting Wang Xing-Yang Feng 《Natural product research》2018,32(20):2418-2423
A new abietane diterpenoid, tripterregeline A (1), together with six known diterpenoids (2–7), were isolated from the roots of Tripterygium regelii. The structure of 1 was elucidated by extensive spectroscopic methods and the known compounds were identified by comparison with data reported in the literature. All isolated compounds were evaluated for their cytotoxicities against five human cancer cell lines: HL-60, SMMC-7721, A-549, MCF-7 and SW480 in vitro. Compounds 1–7 showed significant inhibitory effects against various human cancer cell lines with IC50 values ranging from 0.58 to 21.06 μM. 相似文献
14.
One new triterpenoid saponin orychoside A (1) and one new diterpene glucoside orychoside B (12), together with eleven known compounds, were isolated from the seeds of Orychophragmus violaceus. The structures of the new compounds were elucidated on the basis of spectroscopic analysis. The known compounds were identified by comparison with data reported in the literature. All compounds were tested for their cytotoxic activities against the HepG2 and A549 cell lines in vitro. The new compound 1 exhibited potent cytotoxicity against the two cell lines with IC50 values of 7.13 and 8.77 μM, respectively. Compounds 2, 5, 8 and 9 were found to possess obvious cytotoxicity. 相似文献
15.
A new isoflavone glycoside, dalvelutinoside (1), together with one known isoflavone (2) and five known isoflavone glycosides (3–7) were isolated from the methanol extract of the roots of Dalbergia velutina. Their structures were determined by spectroscopic analysis. All isolated compounds were evaluated for their cytotoxicity against KB and HeLa cell lines. 相似文献
16.
A new flavonol glycoside with a rare structure type, lactucasativoside A (1), was isolated from the seeds of Lactuca sativa, together with three known compounds, japonicin A (2), isoquercitrin (3), and caffeic acid (4). Their structures were established on the basis of extensive spectroscopic analysis. Compound 2 was obtained from the genus Lactuca for the first time. 相似文献
17.
Ming-Jen Cheng Ming-Der Wu Ih-Sheng Chen Gwo-Fang Yuan 《Chemistry of Natural Compounds》2011,47(4):566-570
Further study of a 95% EtOH extract of red mold rice fermented with the yellow mutant of the fungus Monascus sp. led to the isolation of one new chroman derivative, namely monascuskaochroman (1), together with nine known compounds. The structure of the new compound was determined as 4-(1-hydroxy-1-methyl- ethyl)-chroman-4-carboxylic
acid amide. The known compounds were identified as monascin (2), ankaflavin (3), (3R,6R,7E)-(+)-3-hydroxy-4,7-megstigmadien-9-one (4), vanillin (5), syringic acid (6), 3,4,5-trimethoxybenzoic acid (7), trans-methyl p-coumarate (8), ferulic acid (9), and methyl N-methyl anthranylate (10).This is the first report of a naturally occurring chroman skeleton isolated from Monascus species. Compounds 4–10 were isolated from this species for the first time. Their structures were elucidated by 1D and 2D
NMR spectroscopy together with HR-ESI-MS analysis, and comparison of the spectroscopic data with those reported for structurally
related compounds. 相似文献
18.
A new lycodine alkaloid, N-methylhydroxypropyllycodine (1), was isolated from the club moss Lycopodium japonicum Thunb, together with five known compounds, N-methyllycodine (2), huperzinine (3), β-obscurine (4), α-obscurine (5) and des-N-methyl-α-obscurine (6). Their structures were elucidated by spectroscopic analyses, including 2D NMR techniques. 相似文献
19.
Fan Yang Hong-Ping Chen Xiao-Fei Shen Hu-Lan Chen Yin Chen Li-Xia Wang 《Natural product research》2019,33(19):2856-2859
A new abietane diterpenoid glycoside, ajugaside B (1), along with three known compounds (2–4), were isolated from the whole plants of Ajuga ovalifolia var. calantha. The structure of the new compound (1) was elucidated by means of spectroscopic analyses (HRESIMS, IR, NMR and ECD). All of the isolated compounds were evaluated for their antitumor activities against MGC803, MCF-7, A549, HT29 and HepG2 cell lines. Compounds 3–4 showed moderate cytotoxicity against all tested cell lines with IC50 values of 1.8–7.3?μM. 相似文献
20.
A new compound, 2,4,6-trihydroxybenzoic acid 4-O-β-D-allopyranoside (1), together with four known compounds, sucrose (2), fructose (3), ecdysterone (4), and β-sitosterol (5) was isolated from the roots of Neocheiropteris palmatopedata (Baker) Christ. The new compound was identified based on extensive spectroscopic studies including HR-ESI-MS, FAB-MS, 1H NMR, 13C NMR, DEPT, 1H–1H COSY, HSQC, HMBC, and NOESY spectra, and the known compounds were identified by their spectroscopic data analysis, comparison
with reports in the literature, and co-chromatography with authentic standards. Compounds 2, 3, and 5 were obtained from the Neocheiropteris genus for the first time, and 4 was originally isolated from the plant. 相似文献