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1.
Superbanone,A New 2‐Aryl‐3‐benzofuranone and Other Bioactive Constituents from the Tube Roots of Butea superba
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Jutatip Boonsombat Vilailak Prachyawarakorn Acharavadee Pansanit Chulabhorn Mahidol Somsak Ruchirawat Sanit Thongnest 《化学与生物多样性》2017,14(7)
Phytochemical investigation from the tube roots of Butea superba, led to the isolation and identification of a new 2‐aryl‐3‐benzofuranone named superbanone ( 1 ), one benzoin, 2‐hydroxy‐1‐(2‐hydroxy‐4‐methoxyphenyl)‐2‐(4‐methoxyphenyl)ethanone ( 2 ), eight pterocarpans ( 3 – 10 ), and eleven isoflavonoids ( 11 – 21 ). Compound 2 was identified for the first time as a natural product. The structure of the isolated compounds was elucidated using spectroscopic methods, mainly 1D‐ and 2D‐NMR. The isolated compounds and their derivatives were evaluated for α‐glucosidase inhibitory and antimalarial activities. Compounds 3 , 7 , 8 , and 11 showed promising α‐glucosidase inhibitory activity (IC50 = 13.71 ± 0.54, 23.54 ± 0.75, 28.83 ± 1.02, and 12.35 ± 0.36 μm , respectively). Compounds 3 and 11 were twofold less active than the standard drug acarbose (IC50 = 6.54 ± 0.04 μm ). None of the tested compounds was found to be active against Plasmodium falciparum strain 94. On the basis of biological activity results, structure–activity relationships are discussed. 相似文献
2.
Qin‐Feng Zhu Yan‐Yan Qi Zhi‐Jun Zhang Min Fan Ran Bi Jia Su Xing‐De Wu Li‐Dong Shao Qin‐Shi Zhao 《化学与生物多样性》2018,15(5)
Four new vibsane‐type diterpenoids, vibsanol I ( 1 ), 15‐hydroperoxyvibsanol A ( 2 ), 14‐hydroperoxyvibsanol B ( 3 ), 15‐O‐methylvibsanin U ( 4 ), and a new natural product, 5,6‐dihydrovibsanin B ( 5 ), as well as six known analogues, were isolated from the twigs and leaves of Viburnum odoratissimum. Their structures were elucidated by spectroscopic analyses and chemical derivatization method. All compounds showed different levels of cytotoxicity against five cell lines (HL‐60, A‐549, SMMC‐7721, MCF‐7, and SW480). Remarkably, 14,18‐O‐diacetyl‐15‐O‐methylvibsanin U ( 4a ) showed significant cytotoxicity against HL‐60, A‐549, SMMC‐7721, MCF‐7, and SW480, with IC50 values of 0.15 ± 0.01, 0.69 ± 0.01, 0.41 ± 0.02, 0.75 ± 0.03, and 0.48 ± 0.03 μm , respectively. In addition, vibsanin K ( 10 ) was identified as a HSP90 inhibitor with an IC50 value of 19.16 μm . 相似文献
3.
Activity‐guided fractionation strategy was used to investigate chemical constituents from the roots of Podocarpus macrophyllus. Successfully, two new norditerpenes, 2β‐hydroxymakilactone A ( 1 ) and 3β‐hydroxymakilactone A ( 2 ), along with ten known analogues ( 3 – 12 ) were isolated. The structures of 1 and 2 were elucidated by spectroscopic analysis including 1D‐, 2D‐NMR, and HR‐ESI‐MS data. The previously reported structure of 2,3‐dihydro‐2α‐hydroxypodolide was revised as 2,3‐dihydro‐2β‐hydroxypodolide ( 3 ) by spectroscopic analysis, and was further confirmed by X‐ray crystallographic analysis. Cytotoxic activities of all isolated compounds against five human solid tumour cell lines (AGS, HeLa, MDA‐MB‐231, HepG‐2, and PANC‐1) were evaluated. All of them exhibited anti‐proliferative activities (IC50 = 0.3 – 27 μm ), except for 10 . Compounds 1 , 4 , 5 , 6 , and 8 exhibited potent inhibitory activities with IC50 < 1 μm against HeLa and AGS cells. 相似文献
4.
Ru Lin Yu‐Zhou Guan Rui‐Jun Li Xiao‐Ming Xu Jian‐Guang Luo Ling‐Yi Kong 《化学与生物多样性》2016,13(7):884-890
Four new 13,14‐seco‐withanolides, minisecolides A – D ( 1 – 4 ), together with three known analogues 5 – 7 , were isolated from the whole plants of Physalis minima. The structures of new compounds were determined on the basis of spectroscopic analysis, including 1H‐, 13C‐NMR, 2D‐NMR (HMBC, HSQC, ROESY), and HR‐ESI‐MS. Evaluation of all isolates for their inhibitory effects on nitric oxide (NO) production was conducted on lipopolysaccaride‐activated RAW264.7 macrophages. Compounds 2 , 3 , 5 , and 6 showed inhibitory activities, especially for compound 5 with IC50 value of 3.87 μm . 相似文献
5.
New Cytotoxic Triterpenoid Saponins from the Roots of Albizia gummifera (J.F.Gmel.) C.A.Sm.
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Line Made Simo Olivier Placide Noté Joséphine Ngo Mbing Sarah Ali Aouazou Dominique Guillaume Christian Dominique Muller Dieudonné Emmanuel Pegnyemb Annelise Lobstein 《化学与生物多样性》2017,14(10)
As part of our search for new bioactive saponins from Cameroonian medicinal plants, two new oleanane‐type saponins, named gummiferaosides D and E ( 1 and 2 ), along with one known saponin, julibroside J8 ( 3 ), were isolated from the roots of Albizia gummifera. Their structures were established on the basis of extensive 1D‐ and 2D‐NMR (1H‐ and 13C‐NMR, DEPT, COSY, TOCSY, NOESY, HSQC, HSQC‐TOCSY, and HMBC) and HR‐ESI‐MS studies, and by chemical evidence. The apoptotic effect of saponins 1 – 3 was evaluated on the A431 human epidermoid cancer cell. Flow cytometric analyses showed that saponins 1 – 3 induced apoptosis of human epidermoid cancer cell (A431) in a dose‐dependent manner. 相似文献
6.
Four New Tirucallane Triterpenoids from the Fruits of Melia azedarach and Their Cytotoxic Activities
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Fang Zhou Xin‐Hua Ma Zhi‐Jun Li Wei Li Wei‐Min Zheng Zhi‐Biao Wang Xian‐Ming Zeng Kai‐Hui Sun Yong‐Hong Zhang 《化学与生物多样性》2016,13(12):1738-1746
Four new tirucallane triterpenoids, (21S,23R,24R)‐21,23‐epoxy‐21,24‐dihydroxy‐25‐methoxytirucall‐7‐en‐3‐one ( 2 ), (3S,21S,23R,24S)‐21,23‐epoxy‐21,25‐dimethoxytirucall‐7‐ene‐3,24‐diol ( 8 ), (21S,23R,24R)‐21,23‐epoxy‐24‐hydroxy‐21‐methoxytirucalla‐7,25‐dien‐3‐one ( 11 ), and (21S,23R,24R)‐21,23‐epoxy‐21,24‐dihydroxytirucalla‐7,25‐dien‐3‐one ( 12 ), along with 16 known analogues, 1 , 3 – 7 , 9 – 10 , and 13 – 20 , were isolated from the fruits of Melia azedarach. Their structures were elucidated by spectroscopic methods including 1D‐ and 2D‐NMR techniques and mass spectrometry. These compounds were evaluated for their cytotoxicities against HepG2 (liver), SGC7901 (stomach), K562 (leukemia), and HL60 (leukemia) cancer cell lines. Compound 20 exhibited potent cytotoxicity against HepG2 and SGC7901 cancer cells with the IC50 values of 6.9 and 6.9 μm , respectively. 相似文献
7.
Genetically manipulated Brassica genotypes affect demography and performance of Diadegma semiclausum parasitizing Plutella xylostella
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M. Nikooei Y. Fathipour M. Jalali Javaran M. Soufbaf 《Journal of Applied Entomology》2017,141(3):161-171
The performance of Diadegma semiclausum (Hellen) (Hymenoptera: Ichneumonidae) on Plutella xylostella (L.) (Lepidoptera: Plutellidae) reared on canola's progenitor (Brassica rapa L.), two cultivated canola cultivars (Opera and RGS003), one hybrid (Hyula401), one gamma‐ray mutant‐RGS003 and one transgenic (PF) genotype was compared using the age‐stage, two‐sex life table parameters. All experiments were carried out in a growth chamber at 25 ± 1°C, 65 ± 5% RH and a photoperiod of 16 : 8 (L : D) h. There were significant differences in duration of different life stages of D. semiclausum on its host larvae reared on different plant genotypes. The shortest (12.27 days) and longest (15.21 days) pre‐adult developmental times were observed on cultivar‐RGS003 and hybrid‐Hyula401, respectively. The intrinsic rate of increase (r) in D. semiclausum ranged between 0.189/day (cultivar‐Opera) and 0.141/day (transgenic‐PF). Moreover, the highest (20.078 offspring) and lowest (12.027 offspring) net reproductive rates (R0) were observed on cultivar‐Opera and hybrid‐Hyula401. The mean generation time (T) of D. semiclausum was the highest (18.34 days) and lowest (15.05 days) on mutant‐RGS003 and cultivar‐RGS003. The maximum and minimum parasitism values of this parasitoid were observed on canola's progenitor (44.28%) and hybrid‐Hyula401 (37.09%). The heaviest pupae (3.82 mg) and females (3.22 mg) of the parasitoid were found on canola's progenitor and cultivar‐Opera, respectively. The results showed that performance of this parasitoid was better on canola's progenitor and cultivated plants known to have higher levels of glucosinolates concentration than others. 相似文献
8.
Pyrrole Derivatives and Diterpene Alkaloids from the South China Sea Sponge Agelas nakamurai
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Mei‐Jun Chu Xu‐Li Tang Guo‐Fei Qin Yan‐Ting Sun Lei Li Nicole J. de Voogd Ping‐Lin Li Guo‐Qiang Li 《化学与生物多样性》2017,14(7)
Two pairs of new non‐brominated racematic pyrrole derivatives, (±)‐nakamurine D ( 1 ) and (±)‐nakamurine E ( 2 ), two new diterpene alkaloids, isoagelasine C ( 16 ) and isoagelasidine B ( 21 ), together with 13 known pyrrole derivatives ((±)‐ 3 – 15 ), five known diterpene alkaloids ( 17 – 20 , 22 ) were isolated from the South China Sea sponge Agelas nakamurai . The racemic mixtures, compounds 1 – 4 , were resolved into four pairs of enantiomers, (+)‐ 1 and (?)‐ 1 , (+)‐ 2 and (?)‐ 2 , (+)‐ 3 and (?)‐ 3 , and (+)‐ 4 and (?)‐ 4 , by chiral HPLC . The structures and absolute configurations were elucidated on the basis of comprehensive spectroscopic analyses, quantum chemical calculations, quantitative measurements of molar rotations, application of van't Hoff 's principle of optical superposition, and comparison with the literature data. The NMR and MS data of compound 3 are reported for the first time, as the structure was listed in SciFinder Scholar with no associated reference. These non‐brominated pyrrole derivatives were found in this species for the first time. Compound 18 showed valuable cytotoxicities against HL ‐60, K562, and HCT ‐116 cell lines with IC 50 values of 12.4, 16.0, and 19.8 μm , respectively. Compounds 16 – 19 , 21 , and 22 showed potent antifungal activities against Candida albicans with MIC values ranging from 0.59 to 4.69 μg/ml. Compounds 16 – 19 exhibited moderate antibacterial activities against Proteusbacillus vulgaris (MIC values ranging from 9.38 to 18.75 μg/ml). 相似文献
9.
Melanogenesis‐Inhibitory and Cytotoxic Activities of Limonoids,Alkaloids, and Phenolic Compounds from Phellodendron amurense Bark
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Toshihiro Akihisa Satoru Yokokawa Eri Ogihara Masahiro Matsumoto Jie Zhang Takashi Kikuchi Kazuo Koike Masahiko Abe 《化学与生物多样性》2017,14(7)
Four limonoids, 1 – 4 , five alkaloids, 5 – 9 , and four phenolic compounds, 10 – 13 , were isolated from a MeOH extract of the bark of Phellodendron amurense (Rutaceae). Among these, compound 13 was new, and its structure was established as rel‐(1R,2R,3R)‐5‐hydroxy‐3‐(4‐hydroxy‐3‐methoxyphenyl)‐6‐methoxy‐1‐(methoxycarbonylmethyl)indane‐2‐carboxylic acid methyl ester (γ‐di(methyl ferulate)) based on the spectrometric analysis. Upon evaluation of compounds 1 – 13 against the melanogenesis in the B16 melanoma cells induced with α‐melanocyte‐stimulating hormone (α‐MSH), four compounds, limonin ( 1 ), noroxyhydrastinine ( 6 ), haplopine ( 7 ), and 4‐methoxy‐1‐methylquinolin‐2(1H)‐one ( 8 ), exhibited potent melanogenesis‐inhibitory activities with almost no toxicity to the cells. Western blot analysis revealed that compound 6 inhibited melanogenesis, at least in part, by inhibiting the expression of protein levels of tyrosinase, TRP‐1, and TRP‐2 in α‐MSH‐stimulated B16 melanoma cells. In addition, when compounds 1 – 13 were evaluated for their cytotoxic activities against leukemia (HL60), lung (A549), duodenum (AZ521), and breast (SK‐BR‐3) cancer cell lines, five compounds, berberine ( 5 ), 8 , canthin‐6‐one ( 9 ), α‐di‐(methyl ferulate) ( 12 ), and 13 , exhibited cytotoxicities against one or more cancer cell lines with IC50 values in the range of 2.6 – 90.0 μm . In particular, compound 5 exhibited strong cytotoxicity against AZ521 (IC50 2.6 μm ) which was superior to that of the reference cisplatin (IC50 9.5 μm ). 相似文献
10.
Nam K. Nguyen Xuyen A. Truong Thai Q. Bui Dzung N. Bui Hai X. Nguyen Phuong T. Tran Lien‐Hoa D. Nguyen 《化学与生物多样性》2017,14(10)
Two new compounds, fuscaxanthones J ( 1 ) and K ( 2 ), together with eight known xanthones ( 3 – 10 ) were isolated from an ethyl acetate extract of the roots of Garcinia fusca. Their structures were determined using spectroscopic methods, mainly 1D‐ and 2D‐NMR. α‐Glucosidase inhibitory activity of the isolated compounds was evaluated and fuscaxanthone J ( 1 ) showed the most significant effect with an IC50 value of 8.3 ± 1.8 μm (compared with acarbose, IC50 = 214.5 ± 2.3 μm ). 相似文献
11.
Iura M. Alves Lucas S. Abreu Cinara O. S. Costa Mireille Le Hyaric Maria Lenise S. Guedes Milena B. P. Soares Daniel P. Bezerra Eudes S. Velozo 《化学与生物多样性》2017,14(3)
One new chromone 3,3‐dimethylallylspatheliachromene methyl ether ( 1 ), as well as five known chromones, 6‐(3‐methylbut‐2‐enyl) allopteroxylin methyl ether ( 2 ), 6‐(3‐methylbut‐2‐enyl) allopteroxylin ( 3 ), 3,3‐dimethylallylspatheliachromene ( 4 ), 5‐O‐methylcneorumchromone K ( 5 ) and spatheliabischromene ( 6 ), two alkaloids, 8‐methoxy‐N‐methylflindersine ( 7 ) and 8‐methoxyflindersine ( 8 ), and two limonoids, limonin diosphenol ( 9 ) and rutaevin ( 10 ), were isolated from Dictyoloma vandellianum A. Juss (Rutaceae). Cytotoxic activities towards tumor cell lines B16‐F10, HepG2, K562 and HL60 and non‐tumor cells PBMC were evaluated for compounds 1 – 6 . Compound 1 was the most active showing IC50 values ranging from 6.26 to 14.82 μg/ml in B16‐F10 and K562 cell lines, respectively, and presented IC50 value of 11.65 μg/ml in PBMC cell line. 相似文献
12.
Alla A. Kicha Dinh T. Ha Natalia V. Ivanchina Timofey V. Malyarenko Anatoly I. Kalinovsky Pavel S. Dmitrenok Svetlana P. Ermakova Olesya S. Malyarenko Nguyen A. Hung Tran T. T. Thuy Pham Q. Long 《化学与生物多样性》2018,15(3)
Six new polyhydroxysteroidal glycosides, anthenosides S1 – S6 ( 1 – 6 ), along with a mixture of two previously known related glycosides, 7 and 8 , were isolated from the methanolic extract of the starfish Anthenea sibogae. The structures of 1 – 6 were established by NMR and HR‐ESI‐MS techniques as well as by chemical transformations. All new compounds have a 5α‐cholest‐8(14)‐ene‐3α,6β,7β,16α‐tetrahydroxysteroidal nucleus and differ from majority of starfish glycosides in positions of carbohydrate moieties at C(7) and C(16) ( 1 – 4 , 6 ) or only at C(16) ( 5 ). The 4‐O‐methyl‐β‐d ‐glucopyranose residue ( 2 ) and Δ24‐cholestane side chain ( 3 ) have not been found earlier in the starfish steroidal glycosides. The mixture of 7 and 8 slightly inhibited the proliferation of human breast cancer T‐47D cells and decreased the colony size in the colony formation assay. 相似文献
13.
Bergamotane Sesquiterpenes with Alpha‐Glucosidase Inhibitory Activity from the Plant Pathogenic Fungus Penicillium expansum
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You‐Min Ying Cheng‐An Fang Feng‐Qi Yao Yuan Yu Ying Shen Zhuo‐Ni Hou Zhen Wang Wei Zhang Wei‐Guang Shan Zha‐Jun Zhan 《化学与生物多样性》2017,14(1)
Two new bergamotane sesquiterpene lactones, named expansolides C and D ( 1 and 2 ), together with two known compounds expansolides A and B ( 3 and 4 ), were isolated from the plant pathogenic fungus Penicillium expansum ACCC37275. The structures of the new compounds were established by detailed analyses of the spectroscopic data, especially 1D‐, 2D‐NMR, and HR‐ESI‐MS. In an in vitro bioassay, the epimeric mixture of expansolides C and D ( 1 and 2 ) (in a ratio of 2:1 at the temprature of the bioassay) exhibited more potent α‐glucosidase inhibitory activity (IC50 =0.50 ± 0.02 mm ) as compared with the positive control acarbose (IC50 = 1.90 ± 0.05 mm ). To the best of our knowledge, it was the first report on the α‐glucosidase inhibitory activity of bergamotane sesquiterpenes. 相似文献
14.
Hasan Kırmızıbekmez Kubilay Tiftik Norbert Kúsz Orsolya Orban‐Gyapai Zoltán Péter Zomborszki Judit Hohmann 《化学与生物多样性》2017,14(3)
Three new iridoid glycosides, named involucratosides A – C ( 1 – 3 ), were isolated from the H2O subextract of crude MeOH extract prepared from the aerial parts of Asperula involucrata along with a known iridoid glycoside (adoxoside), three flavone glycosides (apigenin 7‐O‐β‐glucopyranoside, luteolin 7‐O‐β‐glucopyranoside, apigenin 7‐O‐rutinoside) as well as two phenolic acid derivatives (chlorogenic acid and ferulic acid 4‐O‐β‐glucopyranoside). Their chemical structures were established by UV, IR, 1D‐ (1H, 13C and JMOD) and 2D‐ (COSY, HSQC, HMBC and NOESY) NMR experiments and HR‐ESI‐MS. In addition, the crude extract, subextracts and isolates were evaluated for their xanthine oxidase inhibitory and antioxidant activities in in vitro tests. This is the first report on the chemical composition and bioactivities of A. involucrata. 相似文献
15.
Huiling Wen Xiaorui Liu Qing Zhang Yanfang Deng Yi Zang Jianping Wang Junjun Liu Qun Zhou Linzhen Hu Hucheng Zhu Chunmei Chen Yonghui Zhang 《化学与生物多样性》2018,15(4)
Asperochramides A – D ( 1 – 4 ), a new natural product and three new indole diketopiperazine alkaloids, along with seven known analogs ( 5 – 11 ), were isolated from the ethyl acetate extract of Aspergillus ochraceus. Their structures were elucidated by extensive spectroscopic analyses, ECD calculation, and single‐crystal X‐ray diffraction analysis. Compounds 3 and 4 represent a rare group of indole diketopiperazine alkaloid with a 3‐hydroxyl‐2‐indolone moiety. The in vitro anti‐inflammatory effects of compounds 1 and 3 – 11 were investigated by using LPS‐stimulated murine macrophage RAW 264.7 cells. Compounds 1 , 8 , 10 , and 11 showed potential anti‐inflammatory activities. 相似文献
16.
Aims
This work was performed to characterize new secondary metabolites with neuraminidase (NA) inhibitory activity from marine actinomycete strains.Methods and Results
An actinomycete strain IFB‐A01, capable of producing new NA inhibitors, was isolated from the gut of shrimp Penasus orientalis and identified as Streptomyces seoulensis according to its 16S rRNA sequence (over 99% homology with that of the standard strain). Repeated chromatography of the methanol extract of the solid‐substrate culture of S. seoulensis IFB‐A01 led to the isolation of streptoseolactone ( 1 ), and limazepines G ( 2 ) and H ( 3 ). The structures of 1 – 3 were determined by a combination of IR, ESI‐MS, 1D (1H and 13C NMR, and DEPT) and 2D NMR experiments (HMQC, HMBC, 1H‐1H COSY and NOESY). Compounds 1 – 3 showed significant inhibition on NA in a dose‐dependent manner with IC50 values of 3·92, 7·50 and 7·37 μmol l?1, respectively.Conclusions
This is the first report of two new ( 1 and 2 ) and known ( 3 , recovered as a natural product for the first time in the work) NA inhibitors from the marine‐derived actinomycete S. seoulensis IFB‐A01.Significance and Impact of the Study
The three natural NA inhibitors maybe of value for the development of drug(s) necessitated for the treatment of viral infections. 相似文献17.
New Acetophenone Derivatives from Acronychia oligophlebia and Their Anti‐inflammatory and Antioxidant Activities
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Yuan‐Lin Zhong Qian‐Wen Niu Ying‐Ying Li Yu‐Bo Zhang Man‐Mei Li Yao‐Lan Li Guo‐Cai Wang 《化学与生物多样性》2018,15(5)
Seven new acetophenone derivatives (acroliones A – G, 1 – 7 ) and three known ones ( 8 – 10 ) were isolated from the leaves of Acronychia oligophlebia. Their structures were elucidated based on extensive spectroscopic analyses (IR, UV, HR‐ESI‐MS, 1D‐ and 2D‐NMR), X‐ray diffraction and comparison with literature data. The anti‐inflammatory and antioxidant activities of all isolates were evaluated. 相似文献
18.
《化学与生物多样性》2018,15(2)
Phytochmical investigation of roots of Actinidia chinensisPlanch . led to the isolation triterpenoids 1 – 16 , including a new compound 2α,3α,23,24‐tetrahydroxyursa‐12,20(30)‐dien‐28‐oic acid ( 1 ). Their structures were identified on the basis of spectroscopic analysis, including 1D‐ and 2D‐NMR, HR‐ESI mass spectrometry, and by comparison with the literatures. The cytotoxicities of triterpenoids 1 – 16 against a panel of cultured human cancer cell lines (HepG2, A549, MCF‐7, SK‐OV‐3, and HeLa) were evaluated. The new compound 1 exhibited moderate antitumor activities with IC50 values of 19.62 ± 0.81, 18.86 ± 1.56, 45.94 ± 3.62, 62.41 ± 2.29, and 28.74 ± 1.07 μm , respectively. The experiment data might be available to explain the use of roots of A. chinensis to treat various cancers in traditional Chinese medicine. 相似文献
19.
Chemical Components from Phaeanthus vietnamensis and Their Inhibitory NO Production in BV2 Cells
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Nguyen Xuan Nhiem Nguyen Trung Tuong Pham Thanh Ky Lalita Subedi Seon Ju Park Tran Minh Ngoc Pham Hai Yen Bui Huu Tai Tran Hong Quang Phan Van Kiem Sun Yeou Kim Seung Hyun Kim 《化学与生物多样性》2017,14(8)
Phaeanthus vietnamensis Bân is a well‐known medicinal plant which has been used for the treatment of various inflammatory diseases in traditional medicine. Using various chromatographic methods, three new compounds, (7S,8R,8′R)‐9,9′‐epoxy‐3,5,3′,5′‐tetramethoxylignan‐4,4′,7‐triol ( 1 ), 8α‐hydroxyoplop‐11(12)‐en‐14‐one ( 5 ), and (1R,2S,4S)‐4‐acetyl‐2‐[(E)‐(cinnamoyloxy)]‐1‐methylcyclohexan‐1‐ol ( 12 ) along with twelve known compounds were isolated from the leaves of P. vietnamensis. Their chemical structures were elucidated by physical and chemical methods. All compounds were evaluated for the inhibitory activities of nitric oxide production in LPS‐stimulated BV2 cells. As the results, compound 6 showed the most potent inhibitory activity on LPS‐stimulated NO production in BV2 cells with the IC50 values of 15.7 ± 1.2 μm . Compounds 2 , 7 , and 8 significantly inhibited inflammatory NO production with IC50 values ranging from 22.6 to 25.3 μm . 相似文献
20.
Chunmei Chen Jing Wang Hucheng Zhu Jianping Wang Yongbo Xue Guangzheng Wei Yi Guo Dongdong Tan Jinwen Zhang Chunping Yin Yonghui Zhang 《化学与生物多样性》2016,13(4):422-426
Two new azaphilone derivatives, chaephilones A ( 1 ) and B ( 2 ), were isolated from the fungus Chaetomium globosum, together with four structurally related analogs 3 – 6 . The structures of 1 and 2 were elucidated by comprehensive spectroscopic analyses including HR‐ESI‐MS and NMR. The known compounds were identified as chaetomugilin Q ( 3 ), chaetomugilin D ( 4 ), 11‐epichaetomugilin A ( 5 ), and chaetomugilin S ( 6 ) by comparing their NMR data and optical rotation values with those reported. Compound 2 represents the first example of azaphilone with an open furan ring. Compounds 1 and 2 were evaluated for cytotoxic activities against five human cancer cell lines (HL‐60, SMMC‐7721, A‐549, MCF‐7, and SW480) by the MTS method. 相似文献