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Fitoterapia

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https://www.readbyqxmd.com/read/29132837/prepubertal-chrysin-exposure-upregulates-either-ar-in-male-ventral-prostate-or-ar-and-er%C3%AE-in-skene-s-paraurethral-gland-of-pubertal-and-adult-gerbils
#1
Naiara C S Ribeiro, Mônica S Campos, Mariana B Santos, Gabriela M Ayusso, Patrícia S L Vilamaior, Luis O Regasini, Sebastião R Taboga, Manoel F Biancardi, Ana P S Perez, Fernanda C A Santos
Chrysin is a plant-derived polyphenol that has the potential to increase endogenous testosterone levels both by inhibiting the aromatase enzyme and by stimulating testicular steroidogenesis. The effects of chrysin on the prostate are unknown, especially during its development and functional maturation. Thus, the aim of this study was to evaluate the effects of chrysin prepubertal exposure on the male and female prostates of both pubertal and adult gerbils. To evaluate the possible androgenic responses of chrysin, gerbils were also exposed to testosterone...
November 10, 2017: Fitoterapia
https://www.readbyqxmd.com/read/29128601/isolation-modification-and-cytotoxic-evaluation-of-stilbenoids-from-acanthopanax-leucorrhizus
#2
Hao-Bin Hu, Hai-Peng Liang, Hai-Ming Li, Ru-Nan Yuan, Jiao Sun, La-La Zhang, Ming-Hu Han, Yun Wu
Twenty natural stilbenoids (1-20), including seven new stilbenoids (2, 4-7, 19, 20) and thirteen known stilbenoids (1, 3, 8-18), were isolated from the stem barks of Acanthopanax leucorrhizus, and six modified stilbenoid derivatives (1a, 2a, 4a, 4b, 7a and 17a) were obtained via methylation, demethylation and isopentenylation of the corresponding isolates (1, 2, 4, 7 and 17). These stilbenoids were structurally characterized by comprehensive analysis of their spectroscopic data and comparison with literature information, and evaluated for their cytotoxic activities against three human tumor cell lines (leukemia HL-60, hepatoma SMMC-7721 and breast carcinoma MCF-7) in vitro by MTT assay...
November 8, 2017: Fitoterapia
https://www.readbyqxmd.com/read/29128600/monoterpenoid-indole-alkaloids-from-gardneria-multiflora
#3
Wan-Xia Yang, Yan-Fang Chen, Juan Yang, Tao Huang, Li-Li Wu, Ning Xiao, Xiao-Jiang Hao, Yuan-Hu Zhang
Six new monoterpenoid indole alkaloids, 19(E)-9-demethoxy-16-dehydroxylchitosenine-17-O- β-d-glucopyranoside (1), 19(E)-9,10-didemethoxy-16-dehydroxylchitosenine-17-O-β-d-gluco-pyranoside (2), 19(E)-9,10-didemethoxy-16-dehydroxyl-11-methoxychitosenine (3), 19(E)-9,10-didemethoxy-16-dehydroxyl-11-methoxychitosenine-17-O-β-d-glucopyranoside (4), 19(Z)-18-carboxylgardneramine (5), and 19(E)-18-demethoxygardneramine-N (4)-oxide (6), along with four known alkaloids, were isolated from Gardneria multiflora, and their structures were elucidated by spectroscopic analysis...
November 8, 2017: Fitoterapia
https://www.readbyqxmd.com/read/29126957/3-arylisoindolinone-and-sesquiterpene-derivatives-from-the-mangrove-endophytic-fungi-aspergillus-versicolor-sysu-sks025
#4
Hui Cui, Yena Liu, Tingmei Li, Zhengrui Zhang, Meng Ding, Yuhua Long, Zhigang She
A pair of 3-arylisoindolinone enantiomers: (+)-asperglactam A (1), (-)-asperglactam A (1) and a pair of nor-bisabolane enantiomers: (+)-1-hydroxyboivinianic acid (2), (-)-1-hydroxyboivinianic acid (2), along with seven known compounds (3-8) were obtained from the mangrove endophytic fungus Aspergillus versicolor SYSU-SKS025. Their structures were determined on the basis of HRESIMS and NMR spectroscopic data, and X-ray diffraction. (+)-Asperglactam A (1) and (-)-asperglactam A (1) are the first optically pure examples in the 3-arylisoindolinone family, which are rarely found in natural sources...
November 7, 2017: Fitoterapia
https://www.readbyqxmd.com/read/29122633/iridoids-and-sfingolipids-from-hedyotis-diffusa
#5
Changfu Wang, Ping Xin, Youzhi Wang, Xuegang Zhou, Donghua Wei, Chengjie Deng, Shiqin Sun
Seven new compounds were isolated from the aerial part of Hedyotis diffusa, including three iridoid glycosides, hedyoiridoidside A - C (1-3), two cerebrosides, hedyocerenoside F (4) and G (5), and two new ceramides, hedyoceramide A (6) and B (7). And six known iridoid glycosides (8-13) were also obtained. Their structures were established by their physico-chemical constants and spectroscopic analysis. The cytotoxicity of all compounds against tumor cell lines of human cervical cancer HeLa, human leukemia HL-60, human lung cancer A459, human hepatoma HepG2, human gastric gland carcinoma BCG-823, human nasopharyngeal cancer CNE-2, human colon cancer HCT15, and human prostate cancer PC-3 were also evaluated in vitro...
November 6, 2017: Fitoterapia
https://www.readbyqxmd.com/read/29122632/new-c16-noriridals-and-formyl-monocycloiridals-from-the-rhizomes-of-iris-pseudoacorus
#6
Xinglong Chen, Xiuqiong Zhang, Changan Geng, Tianze Li, Jijun Chen
Four new C16-noriridals (1-4) and two reported C16-noriridals (5-6), together with two new formyl-monocycloiridals (7-8) and three known monocycloiridals (9-11) were isolated from the rhizomes of Iris pseudoacorus. Irispseudoacorins A-D (1-4) and iridojaponals A-B (5-6) were C16-noriridals which shared a 6/5/7 tricyclic ring system (1-2, 5-6) or 6/5 tricyclic ring system (3-4). The formyl-monocycloiridals (7-8) were detected in the crude extracts of I. pseudoacorus by LC-MS analysis which suggested they were originated from natural sources rather than artificial products during the isolation...
November 6, 2017: Fitoterapia
https://www.readbyqxmd.com/read/29108933/isolation-and-identification-of-a-tribenzylisoquinoline-alkaloid-from-nelumbo-nucifera-gaertn-a-novel-potential-smooth-muscle-relaxant
#7
Guang-Ming Yang, Jie Sun, Yang Pan, Jun-Li Zhang, Min Xiao, Min-Sheng Zhu
A new skeleton benzylisoquinoline (BI) named neoliensinine (1) was isolated from embryos of lotus seed (Nelumbo nucifera Gaertn.), a traditional Chinese herb. The tribenzylisoquinoline (TBI) structure of 1 was confirmed by interpreting spectroscopic data of UV, IR, MS, 1D and 2D NMR. The stereo-configurations of the new compound, together with two known bisbenzylisoquinolines (BBI), neferine and isoliensinine were established by analyzing (1)H NMR and (13)C NMR spectra. The relaxation of 1, neferine, isoliensinine and liensinine in isolated mesenteric vascular smooth muscle (VSM) was evaluated...
November 3, 2017: Fitoterapia
https://www.readbyqxmd.com/read/29108932/improving-anti-trypanosomal-activity-of-alkamides-isolated-from-achillea-fragrantissima
#8
Joseph Skaf, Omar Hamarsheh, Michael Berninger, Srikkanth Balasubramanian, Tobias A Oelschlaeger, Ulrike Holzgrabe
In previous studies the aerial parts of Achillea fragrantissima were found to have substantial antileishmanial and antitrypanosomal activity. A bioassay-guided fractionation of a dichloromethane extract yielded the isolation of the essential anti-trypanosomal compounds of the plant. Seven sesquiterpene lactones (including Achillolide-A), two flavonoids, chrysosplenol-D and chrysosplenetine, and four alkamides (including pellitorine) were identified. This is the first report for the isolation of the sesquiterpene lactones 3 and 4, chrysosplenetine and the group of alkamides from this plant...
November 3, 2017: Fitoterapia
https://www.readbyqxmd.com/read/29111165/3-hydroxy-3-methylglutaryl-flavone-glycosides-from-the-leaves-of-turpinia-arguta
#9
Shuang-Gang Ma, Shao-Peng Yuan, Yun-Bao Liu, Jing Qu, Yong Li, Xiao-Jing Wang, Ru-Bing Wang, Song Xu, Qi Hou, Shi-Shan Yu
Three new 3-hydroxy-3-methylglutaryl (HMG) flavone 7-O-diglycosides, argutosides A-C (1-3); two new flavone 7-O-triglycosides, argutosides D-E (4-5); and one known apigenin 7-O-triglycoside (6), were isolated from the leaves of Turpinia arguta. The structures of these compounds were elucidated by spectroscopic and chemical techniques. The NO inhibitory activities of compounds 1-6 were evaluated using lipopolysaccharide-induced RAW264.7 cells. Only compound 2 showed a moderate inhibitory effect on NO production with an IC50 value of 25...
October 27, 2017: Fitoterapia
https://www.readbyqxmd.com/read/29106995/azacoccones-a-e-five-new-aza-epicoccone-derivatives-from-aspergillus-flavipes
#10
Shupeng Zou, Zhongbo Wang, Jing Wang, Guangzheng Wei, Wenjing Wang, Yi Zang, Fanrong Zeng, Keliang Chen, Junjun Liu, Jianping Wang, Zengwei Luo, Yongbo Xue, Hucheng Zhu, Chunping Yin, Chunmei Chen, Yonghui Zhang
Azacoccones A-E (1-5), five new aza-epicoccone derivatives, were isolated from the culture of Aspergillus flavipes. Their structures were determined by extensive NMR spectroscopic analyses and the absolute configuration of 5 was determined by electronic circular dichroism (ECD) calculation. Compounds 1-5 are proposed to be generated via a Pictet-Spengler reaction-based biosynthetic route starting from the precursor flavipin. Pictet-Spengler reaction is rarely found in the fungal kingdom, which indicated the distinctive nature of 1-5...
October 26, 2017: Fitoterapia
https://www.readbyqxmd.com/read/29106994/induction-of-new-metabolites-from-the-endophytic-fungus-bionectria-sp-through-bacterial-co-culture
#11
Ramsay S T Kamdem, Hao Wang, Pascal Wafo, Weaam Ebrahim, Ferhat Can Özkaya, Gamall Makhloufi, Christoph Janiak, Parichat Sureechatchaiyan, Matthias U Kassack, Wenhan Lin, Zhen Liu, Peter Proksch
A new alkaloid, 1,2-dihydrophenopyrrozin (1), along with five known compounds (2-6) was isolated from an axenic culture of the endophytic fungus, Bionectria sp., obtained from seeds of the tropical plant Raphia taedigera. Co-cultivation of this fungus either with Bacillus subtilis or with Streptomyces lividans resulted in the production of two new o-aminobenzoic acid derivatives, bionectriamines A and B (7 and 8) as well as of two additional known compounds (9 and 10). None of the latter compounds (7-10) were detected in axenic cultures of the fungus or of the bacteria indicating activation of silent biogenetic gene clusters through co-cultivation with bacteria...
October 26, 2017: Fitoterapia
https://www.readbyqxmd.com/read/29079035/a-study-of-the-chemical-diversity-of-macroalgae-from-south-eastern-australia
#12
Daniel Vuong, Matvi Kaplan, Heather J Lacey, Andrew Crombie, Ernest Lacey, Andrew M Piggott
Macroalgae are a rich source of biologically active chemical diversity for pharmaceutical and agrichemical discovery. However, the ability to understand the complexities of their chemical diversity will dictate whether these natural products have a place in modern discovery paradigms. In this study, we examined the relationship between secondary metabolite production and biological activity for a cohort of 127 macroalgae samples collected from various locations across South Eastern Australia. Approximately 20% of the macroalgae samples showed high levels of chemical diversity and productivity, which also correlated strongly with bioactivity...
October 24, 2017: Fitoterapia
https://www.readbyqxmd.com/read/29074227/isobenzofuranones-from-the-aerial-parts-of-leontopodium-leontopodioides-wild-beauv
#13
Yi Zhang, Yuling Yang, Jingya Ruan, Qiu Chen, Jian Li, Yuanqiang Guo, Lifeng Han, Tao Wang
A phytochemical investigation to obtain new triglyceride (TG) accumulation inhibitors resulted in the isolation of six new isobenzofuranones, leontopodiols A (1), B (2), leontopodiosides C (3), D (4), E (5), F (6), together with three known ones (7-9) from the aerial parts of Leontopodium leontopodioides (Willd.) Beauv. The structures of these isolates were identified by routine NMR experiments, optical rotation determination, electronic circular dichroism (ECD) calculation, along with chemical reaction. Moreover, compounds 1, 2, 5, and 7-9 displayed TG accumulation inhibitory effects on HepG2 cells...
October 23, 2017: Fitoterapia
https://www.readbyqxmd.com/read/29074226/monoterpenoid-indole-alkaloids-from-the-leaves-of-alstonia-scholaris-and-their-nf-%C3%AE%C2%BAb-inhibitory-activity
#14
Ji Yang, Jing Fu, Xin Liu, Zhi-Hong Jiang, Guo-Yuan Zhu
Four new monoterpenoid indole alkaloids (MIAs), scholarisines P-S (1-4), and 14 known MIAs (5-18) were isolated from the leaves of Alstonia scholaris (L) R. Br. (Apocynaceae). Their structures were elucidated by analyzing their HRESIMS data and NMR spectroscopic data. All of the isolated MIAs were evaluated for their Nuclear Factor-kappa B (NF-κB) inhibitory activity in HepG2-NF-κB-Luc cells. Among them, five compounds (4, 7, 8, 13 and 16) exhibited significant NF-κB inhibitory activity.
October 23, 2017: Fitoterapia
https://www.readbyqxmd.com/read/29074225/phenylisotertronic-acids-from-the-tcm-endophytic-fungus-phyllosticta-sp
#15
Heng-Gang Yang, Jiao-Jiao Li, Shao-Meng Chen, Lang-Ming Mou, Jian Zou, Chuan-Xi Wang, Guo-Dong Chen, Sheng-Ying Qin, Xin-Sheng Yao, Hao Gao
Four new phenylisotertronic acids (1a/1b, 2a, and 3a) were isolated from a TCM endophytic fungal strain Phyllosticta sp. J13-2-12Y obtained from the leaves of Acorus tatarinowii, along with two known ones (2b and 3b). Compounds 1-3 all existed as mixtures of enantiomers, and their corresponding optically pure enantiomers were successfully isolated by chiral HPLC. The structures of isolated compounds were determined by comprehensive spectroscopic analyses and X-ray diffraction. Their absolute configurations were determined by ECD experiments and quantum chemical calculations...
October 23, 2017: Fitoterapia
https://www.readbyqxmd.com/read/29074224/phochrodines-a-d-first-naturally-occurring-new-chromenopyridines-from-mangrove-entophytic-fungus-phomopsis-sp-33
#16
Huiping Chen, Meixiang Huang, Xuewen Li, Lan Liu, Bin Chen, Jun Wang, Yongcheng Lin
Four new chromenopyridine derivatives, phochrodines A-D (1-4), were identified from mangrove entophytic fungus Phomopsis sp. 33# by means of various modern chromatographic, spectroscopic and single crystal X-ray diffraction techniques. Compounds 1-4 with an unusual 5H-chromeno[4,3-b]pyridine skeleton were the first naturally occurring chromenopyridines. Their anti-inflammatory, antioxidant and cytotoxic activities were evaluated. 3 and 4 showed moderate inhibition of nitric oxide production with IC50 values of 49...
October 23, 2017: Fitoterapia
https://www.readbyqxmd.com/read/29066299/%C3%AE-elemene-attenuates-macrophage-activation-and-proinflammatory-factor-production-via-crosstalk-with-wnt-%C3%AE-catenin-signaling-pathway
#17
Yangyi Fang, Yanhua Kang, Han Zou, Xiaxuan Cheng, Tian Xie, Liyun Shi, Hang Zhang
β-elemene, extracted from Rhizoma zedoariae, has been widely used as a traditional medicine for its antitumor activity against a broad range of cancers. However, the effect of β-elemene in inflammation disorders has yet to be determined. The present study was designed to investigate the anti-inflammatory effects and potential molecular mechanisms of β-elemene in lipopolysaccharide (LPS)-induced murine macrophage cells RAW264.7. We found that the production of pro-inflammatory mediators, including interleukin-6(IL-6), tumor necrosis factor-α (TNF-α) and interleukin-1β (IL-1β), induced by LPS was significantly suppressed by β-elemene in a dose-dependent manner in RAW264...
October 21, 2017: Fitoterapia
https://www.readbyqxmd.com/read/29066298/sulfur-containing-compounds-from-the-roots-of-ferula-latisecta-and-their-cytotoxic-activities
#18
Saba Soltani, Gholam-Reza Amin, Mohammad Hossein Salehi-Sourmaghi, Bernd Schneider, Sybille Lorenz, Mehrdad Iranshahi
Five new sulfur-containing compounds, with a new geometry (cis) of the propenyl moiety, and five known compounds were isolated from the roots of Ferula latisecta. The structures of these compounds, were elucidated on the basis of spectroscopic data including 1D and 2D NMR experiments and HRMS. All of the isolated compounds were tested against A2780, A549, HeLa, and HCT116 human cancer cell lines and some of them showed moderate cytotoxic activities.
October 21, 2017: Fitoterapia
https://www.readbyqxmd.com/read/29066297/medicinal-mascarene-aloes-an-audit-of-their-phytotherapeutic-potential
#19
D Lobine, I Cummins, J Govinden-Soulange, M Ranghoo-Sanmukhiya, K Lindsey, P L Chazot, C A Ambler, S Grellscheid, G Sharples, N Lall, I A Lambrechts, C Lavergne, M-J R Howes
A phytochemical and biological investigation of the endemic Mascarene Aloes (Aloe spp.), including A. tormentorii (Marais) L.E.Newton & G.D.Rowley, A. purpurea Lam, A. macra Haw., A. lomatophylloides Balf.f and A. vera (synonym A. barbadensis Mill.), which are used in the traditional folk medicine of the Mascarene Islands, was initiated. Methanolic extracts of the Aloes under study were analysed using high resolution LC-UV-MS/MS and compounds belonging to the class of anthraquinones, anthrones, chromones and flavone C-glycosides were detected...
October 21, 2017: Fitoterapia
https://www.readbyqxmd.com/read/29066296/two-novel-bioactive-sulfated-guaiane-sesquiterpenoid-salt-alkaloids-from-the-aerial-parts-of-scorzonera-divaricata
#20
Quan-Xiang Wu, Xiao-Feng He, Chun-Xiao Jiang, Wei Zhang, Zhuan-Ning Shi, Hong-Fang Li, Ying Zhu
Extracts of the aerial parts of Scorzonera divaricata afforded sulfoscorzonin D (1) and sulfoscorzonin E (2), two novel pyrrolidine inner salt alkaloids with a sulfated guaiane sesquiterpene lactone nucleus, along with 22 known compounds. Especially, sulfoscorzonin D containing a unusual monoterpene moiety is very rare. The structures of new compounds were established using spectroscopic analysis including one- and two-dimensional NMR and HRESIMS. The cytotoxicities of compounds 1-4 and 10 against three tumor cell lines (K562, Hela, and Hep-G2) were evaluated using the MTT assay...
October 21, 2017: Fitoterapia
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