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1. An endophytic fungus from Trichoderma harzianum SWUKD3.1610 that produces nigranoic acid and its analogues

Author:
Han, MeiJun; Qin, Dan; Ye, TianTian; Yan, Xiao; Wang, JunQi; Duan, XiaoXiang; Dong, JinYan
Source:
Natural product research 2019 v.33 no.14 pp. 2079-2087
ISSN:
1478-6427
Subject:
Kadsura; Trichoderma harzianum; chemical composition; drugs; endophytes; fungi; high performance liquid chromatography; medicinal plants; nuclear magnetic resonance spectroscopy; triterpenoids
Abstract:
... The objective of this study was to determine whether endophytic fungi, isolated from Kadsura angustifolia produce nigranoic acid and its highly oxygenated derivatives. From the 426 endophytic fungi screened, Trichoderma harzianum SWUKD3.1610 was detected to have a component with the same TLC R f value and HPLC retention time as authentic nigranoic acid. This component was further confirmed as nigr ...
DOI:
10.1080/14786419.2018.1486311

2. A new erythrinan N-oxide alkaloid from Erythrina stricta

Author:
Wu, Jing; Zhang, Bing-Jie; Bao, Mei-Fen; Cai, Xiang-Hai
Source:
Natural product research 2019 v.33 no.14 pp. 2004-2010
ISSN:
1478-6427
Subject:
Erythrina stricta; alkaloids; leaves; nitrogen oxides; nuclear magnetic resonance spectroscopy; phytochemicals; spectral analysis; stems
Abstract:
... This phytochemical study of stems and leaves of Erythrina stricta led to the isolation of twenty-three alkaloids, one of them previously unreported, 11β-hydroxyerythratidine N-oxide. Their structures were elucidated on the basis of extensive 1D and 2D NMR spectroscopic analyses including HSQC, HMBC, ¹H–¹H COSY, NOESY, as well as HRESIMS data in addition to comparison with reports in the literature ...
DOI:
10.1080/14786419.2018.1483924

3. A novel dimeric flavonol glycoside from Cynanchum acutum subsp. sibiricum

Author:
Yuan, Si-Wen; Dai, Wei; Pan, Xin-Hui; Lu, Yan; Chen, Dao-Feng; Wang, Qi
Source:
Natural product research 2019 v.33 no.14 pp. 2032-2037
ISSN:
1478-6427
Subject:
Cynanchum; butanol; flavonols; glycosides; spectral analysis
Abstract:
... A novel dimeric flavonol glycoside, Cynanflavoside A (1), together with six analogues, kaempferol-3-O-α-L-rhamnopyranosyl-(1→2)-β-D-glucopyranoside (2), quercetin-3-O-α-L-rhamnopyranosyl-(1→2)-β-D-glucopyranoside (3), kaempferol-3-O-α-L-rhamnopyranosyl-(1→2)-β-D-xylopyranoside (4), quercetin-3-O-α-L-rhamnopyranosyl-(1→2)-β-D-xylopyranoside (5), kaempferol-3-O-β-D-glucopyranosyl-7-O-α-L-rhamnopyran ...
DOI:
10.1080/14786419.2018.1483931

4. Chemical diversity and anti-proliferative activity of marine algae

Author:
Palanisamy, Satheesh Kumar; Arumugam, Velusamy; Rajendran, Samyutha; Ramadoss, Anandhan; Nachimuthu, Subash; Peter D., Magesh; Sundaresan, Umamaheswari
Source:
Natural product research 2019 v.33 no.14 pp. 2120-2124
ISSN:
1478-6427
Subject:
Gracilaria; Pseudomonas aeruginosa; Sargassum wightii; Ulva; animal pathogens; antimicrobial properties; bioassays; chemotaxonomy; fatty acids; gas chromatography-mass spectrometry; human cell lines; inhibitory concentration 50; macroalgae; metabolites; neoplasm cells; phytochemicals; principal component analysis; steroids; uterine cervical neoplasms
Abstract:
... The chemical diversity of three macroalgae (Ulva reticulata, Sargassum wightii, Gracilaria sp) were determined using the GC-MS method with principal component analysis (PCA) and their potential efficacy against human pathogens and cervical carcinoma cells evaluated using MTT bioassay method. Our results showed that >30 metabolites were detected in three seaweeds, among these, steroids and fatty ac ...
DOI:
10.1080/14786419.2018.1488701

5. Comparative study of volatile components from male and female flower buds of Populus × tomentosa by HS-SPME-GC-MS

Author:
Xu, Liang; Liu, Haiping; Ma, Yucui; Wu, Cui; Li, Ruiqi; Chao, Zhimao
Source:
Natural product research 2019 v.33 no.14 pp. 2105-2108
ISSN:
1478-6427
Subject:
Populus tomentosa; benzyl benzoate; cluster analysis; comparative study; dioecy; female flowers; females; flower buds; gas chromatography-mass spectrometry; headspace analysis; males; methyl salicylate; solid phase microextraction; volatile compounds
Abstract:
... The differences of volatile components in male (MFB) and female flower buds (FFB) of Populus × tomentosa were analysed and compared by HS-SPME with GC-MS for the first time. A total of 34 compounds were identified. Two clusters were clearly divided into male and female by hierarchical clustering analysis. Both the male and female flower buds showed methyl salicylate (22.83 and 24.09%, respectively ...
DOI:
10.1080/14786419.2018.1483929

6. Detection of picramic acid and picramate in henné products by NMR Spectroscopy

Author:
Nicoletti, Marcello; Frezza, Claudio; Tomassini, Lamberto; Serafini, Mauro; Bianco, Armandodoriano
Source:
Natural product research 2019 v.33 no.14 pp. 2073-2078
ISSN:
1478-6427
Subject:
Lawsonia inermis; ethyl acetate; fatty acids; markets; nuclear magnetic resonance spectroscopy; powders; quality control; raw materials
Abstract:
... Painting and body art are increasing their utilisation as well as their cultural impact, since piercing and tattoos are expanding social phenomena, involving many young people. However, the utilised materials often enter the market with insufficient control and several cases of skin damages are reported. Safety of the utilised products must be ensured by adequate quality controls which must be eas ...
DOI:
10.1080/14786419.2018.1485676

7. Emerixanthone E, a new xanthone derivative from deep sea fungus Emericella sp SCSIO 05240

Author:
Fredimoses, Mangaladoss; Zhou, Xuefeng; Ai, Wen; Tian, Xinpeng; Yang, Bin; Lin, Xiuping; Liu, Juan; Liu, Yonghong
Source:
Natural product research 2019 v.33 no.14 pp. 2088-2094
ISSN:
1478-6427
Subject:
Emericella; antineoplastic activity; emodin; internal transcribed spacers; marine fungi; marine sediments; mass spectrometry; metabolites; nuclear magnetic resonance spectroscopy; spectral analysis; xanthone
Abstract:
... The marine fungus Emericella sp was isolated from the deep sea sediments. The fungus was identified by its morphology and ITS region. A new emerixanthone E (1) together with four (2–5) known emodin derivatives were isolated from the metabolites of the fungus Emericella SCSIO05240. The structures were elucidated on the basis of NMR spectroscopic analysis and mass spectrometry. The biological proper ...
DOI:
10.1080/14786419.2018.1487966

8. Essential oil composition of Dracocephalum kotschyi Boiss. from Iran

Author:
Sonboli, Ali; Mirzania, Foroogh; Gholipour, Abbas
Source:
Natural product research 2019 v.33 no.14 pp. 2095-2098
ISSN:
1478-6427
Subject:
Dracocephalum; aerial parts; essential oils; gas chromatography-mass spectrometry; herbs; hydrodistillation; mountains; oils; Iran
Abstract:
... Dracocephalum kotschyi is one of the medicinal and fragrant herbs that can be found in natural locations of mountainous areas. In this investigation the hydrodistilled essential oils obtained from aerial parts of two populations of D. kotschyi collected from Siahbisheh and Baladeh were analysed by capillary GC-FID and GC-MS. Essential oil analysis led to the identification of 48 compounds that rep ...
DOI:
10.1080/14786419.2018.1482550

9. New adenine analogues and a pyrrole alkaloid from Selaginella delicatula

Author:
Yao, Cai-Ping; Zou, Zhen-Xing; Zhang, Yan; Li, Jing; Cheng, Fei; Xu, Ping-Sheng; Zhou, Gan; Li, Xiao-Min; Xu, Kang-Ping; Tan, Gui-Shan
Source:
Natural product research 2019 v.33 no.14 pp. 1985-1991
ISSN:
1478-6427
Subject:
DNA; Selaginella; adenine; alkaloids; circular dichroism spectroscopy; nuclear magnetic resonance spectroscopy; phytochemicals; pyrroles; spectral analysis; surface antigens
Abstract:
... Phytochemical study on the n-BuOH extract of Selaginella delicatula lead to the isolation, characterization and structure elucidation of two new adenine analogues, delicatulines A (1) and B (2), one new pyrrole alkaloid (4), and five known compounds (3, 5–8). These new substances all contain an aliphatic chain in their parent nucleus, which were unusual to find in plants. In the present study, the ...
DOI:
10.1080/14786419.2018.1482892

10. New 1, 2-naphthoquinone-derived pigments from the mycobiont of lichen Trypethelium eluteriae Sprengel

Author:
Basnet, Buddha Bahadur; Liu, Li; Zhao, Wen; Liu, Ruixing; Ma, Ke; Bao, Li; Ren, Jinwei; Wei, Xinli; Yu, Haiyang; Wei, Jiangchun; Liu, Hongwei
Source:
Natural product research 2019 v.33 no.14 pp. 2044-2050
ISSN:
1478-6427
Subject:
2,2-diphenyl-1-picrylhydrazyl; Trypethelium; antioxidant activity; cell lines; circular dichroism spectroscopy; cytotoxicity; fungi; inhibitory concentration 50; lichens; naphthoquinones; pigments; spectral analysis
Abstract:
... A new yellow pigment trypethelonamide A (1), and a new dark violet-red pigment 5′-hydroxytrypethelone (2), as well as three known dark violet-red pigments (+)-8-hydroxy-7-methoxytrypethelone (3), (+)-trypethelone (4) and (-)-trypethelone (5) were isolated from the cultured lichenized fungus Trypethelium eluteriae. The structures of 1 and 2 were determined to be 1, 2-naphthoquinone derivatives by e ...
DOI:
10.1080/14786419.2018.1484458

11. Oligoamide, a new lactam from the leaves of Angylocalyx oligophyllus

Author:
Wakeu Kweka, Brussine Nadège; Jouda, Jean-Bosco; Foudjo Melacheu, Gertrude; Sidjui Sidjui, Lazare; Mkounga, Pierre; Lateef, Mehreen; Ali, Muhammad Shaiq; Wandji, Jean; Djama Mbazoa, Céline
Source:
Natural product research 2019 v.33 no.14 pp. 2011-2015
ISSN:
1478-6427
Subject:
Angylocalyx; chromatography; enzyme inhibition; formononetin; lactams; leaves; nuclear magnetic resonance spectroscopy; spectral analysis; urease
Abstract:
... A new lactam, oligoamide (1), along with three known compounds (2–4), stigmasterol-3-O-β-D-glucopyranoside (2), formononetin (3) and (-)-pinitol (4) were isolated from the CH₂Cl₂/CH₃OH (1:1) extract of the leaves of Angylocalyx oligophyllus by chromatographic separation. Their structures were elucidated on the basis of spectroscopic analysis (UV, IR, MS, 1D, and 2D NMR). Compound 1 was found to ha ...
DOI:
10.1080/14786419.2018.1483925

12. Phytochemical studies on the Australian native plant species Acacia pycnantha and Jacaranda mimosifolia D.Don

Author:
Hendra, Rudi; Willis, Anthony; Keller, Paul A.
Source:
Natural product research 2019 v.33 no.14 pp. 1997-2003
ISSN:
1478-6427
Subject:
Acacia pycnantha; Jacaranda mimosifolia; bacteria; chemical composition; chemical constituents of plants; color; flowers; indigenous species; plants (botany); secondary metabolites; Australia
Abstract:
... In ongoing investigations into colours in Nature, the chemical constituents from the flowers of Acacia pycnantha and Jacaranda mimosifolia D.Don grown in Australia are reported. Eight known secondary metabolites were isolated from the A. pycnantha flower including isosalipurposide (7) which may be responsible for their distinctive colouration. Nine secondary metabolites were isolated from the J. m ...
DOI:
10.1080/14786419.2018.1483922

13. Polyphenolic profiling of Ipomoea carnea Jacq. by HPLC-DAD and its implications in oxidative stress and cancer

Author:
Khan, Muhammad Zafar Irshad; Zahra, Syeda Saniya; Ahmed, Madiha; Fatima, Humaira; Mirza, Bushra; Haq, Ihsan-ul; Khan, Shafi Ullah
Source:
Natural product research 2019 v.33 no.14 pp. 2099-2104
ISSN:
1478-6427
Subject:
Artemia; Ipomoea carnea; cell lines; cytotoxicity; ethanol; flavonoids; flower extracts; free radical scavengers; high performance liquid chromatography; inhibitory concentration 50; leaf extracts; medicinal plants; neoplasms; oxidative stress; phenotype; polyphenols; protein kinases
Abstract:
... Ipomoea carnea Jacq. is an important folklore medicinal plant, assessed for its underexplored biological potential. Antioxidant, cytotoxic, antiproliferative and polyphenolic profile of whole plant was evaluated using various techniques. Maximum extract recovery (29% w/w), phenolic [13.54 ± 0.27 μg GAE/mg dry weight (DW)] and flavonoid (2.11 ± 0.10 μg QE /mg DW) content were recorded in methanol-d ...
DOI:
10.1080/14786419.2018.1482551

14. Potentilla erecta (L.) rhizomes as a source of phenolic acids

Author:
Dróżdż, Paulina; Sentkowska, Aleksandra; Pyrzynska, Krystyna
Source:
Natural product research 2019 v.33 no.14 pp. 2128-2131
ISSN:
1478-6427
Subject:
Potentilla erecta; antioxidant activity; antioxidants; cosmetics; dietary supplements; ingredients; phenolic acids; rhizomes; solvents
Abstract:
... The aim of this study was to evaluate the content of major phenolic acids from Potentilla erecta rhiozomes. Water and ethanol-water mixture was used for extraction of these compounds. The extracts were also evaluated for the quantification of total phenolic content and the antioxidant capacity. The contents of phenolic acids and resulting antioxidant activities are dependent on the nature of extra ...
DOI:
10.1080/14786419.2018.1488704

15. Roseosporol A, the first isolation of a novel sesquiterpenoid from Streptomyces roseosporus

Author:
Deng, Lina; Wang, Rui; Wang, Guowei; Liu, Mingxu; Liao, Zhihua; Liao, Guojian; Chen, Min
Source:
Natural product research 2019 v.33 no.14 pp. 2038-2043
ISSN:
1478-6427
Subject:
Streptomyces roseosporus; ethyl acetate; mass spectrometry; mutants; nuclear magnetic resonance spectroscopy; sesquiterpenoids
Abstract:
... A novel sesquiterpenoid, roseosporol A (1), together with 12 known compounds (2–13) were isolated from the ethyl acetate extract of Lsr2-deletion mutant strain of Streptomyces roseosporus. Their structures were determined by spectroscopic methods, including NMR, HRMS, UV, IR and ECD. ...
DOI:
10.1080/14786419.2018.1484457

16. Saponins from the roots of Chenopodium bonus-henricus L.

Author:
Kokanova-Nedialkova, Zlatina; Nedialkov, Paraskev T.; Momekov, Georgi
Source:
Natural product research 2019 v.33 no.14 pp. 2024-2031
ISSN:
1478-6427
Subject:
Chenopodium; cell lines; cytotoxicity; interleukin-2; mass spectrometry; methanol; nuclear magnetic resonance spectroscopy; roots; saponins
Abstract:
... Two new glycosides of phytolaccagenin and 2β-hydroxyoleanoic acid, namely bonushenricoside A (3) and bonushenricoside B (5) together with four known saponins, respectively compounds 3-O-L-α-arabinopyranosyl-bayogenin-28-O-β-glucopyranosyl ester (1), 3-O-β-glucuronopyranosyl-2β-hydroxygypsogenin-28-O-β-glucopyranosyl ester (2), 3-O-β-glucuronopyranosyl-bayogenin-28-O-β-glucopyranosyl ester (4) and ...
DOI:
10.1080/14786419.2018.1483928

17. Sesquiterpene lactones from Centaurea rhizantha C.A. Meyer

Author:
Shakeri, Abolfazl; Masullo, Milena; Bottone, Alfredo; Asili, Javad; Emami, Seyed Ahmad; Piacente, Sonia; Iranshahi, Mehrdad
Source:
Natural product research 2019 v.33 no.14 pp. 2016-2023
ISSN:
1478-6427
Subject:
Centaurea; Staphylococcus aureus; aerial parts; antibacterial properties; cytotoxicity; inhibitory concentration 50; neoplasm cells; nuclear magnetic resonance spectroscopy; sesquiterpenoid lactones
Abstract:
... Two new sesquiterpene lactones, rhizantholide A (1) and rhizantholide B (2), together with five known compounds (3-7) have been isolated from the aerial parts of Centaurea rhizantha (Asteraceae). Sesquiterpene lactones belong to guaianolide class, and rhizantholide B is a rare guaianolide characterized by a free primary alcoholic function at C-10 along with a 3β,10β-epoxy function. Their structure ...
DOI:
10.1080/14786419.2018.1483926

18. Simultaneous quantification of six phenylethanoid glycosides in some Turkish Scutellaria species by a new HPLC-DAD method

Author:
Bardakci, Hilal; Türköz Acar, Ebru; Kırmızıbekmez, Hasan
Source:
Natural product research 2019 v.33 no.14 pp. 2116-2119
ISSN:
1478-6427
Subject:
Scutellaria; aerial parts; flora; glycosides; high performance liquid chromatography; verbascoside; Turkey (country)
Abstract:
... A new HPLC-DAD method was developed and validated for simultaneous determination of six main phenylethanoid glycosides (calceolarioside D, neocalceolarioside D, verbascoside, isoverbascoside, leucoseptoside A and martynoside) in the aerial parts of four Scutellaria L. taxa from flora of Turkey. All standard compounds showed a good linearity (R ² > 0.999) in a relatively wide concentration range (1 ...
DOI:
10.1080/14786419.2018.1486309

19. Solid phase microextraction and gas chromatography mass spectrometry analysis of Zingiber officinale and Curcuma longa

Author:
D'Auria, Maurizio; Racioppi, Rocco
Source:
Natural product research 2019 v.33 no.14 pp. 2125-2127
ISSN:
1478-6427
Subject:
Curcuma longa; Zingiber officinale; beta-phellandrene; camphene; gas chromatography-mass spectrometry; geranial; p-cymene; solid phase microextraction; terpinolene
Abstract:
... SPME analysis of Zingiber officinale Roscoe and Curcuma longa L. were performed by using a DVB/CARB/PDMS fiber. The SPME analysis of Zingiber officinale showed that the main components found were camphene (7.27%), geranial (8.37%), α-zingiberene (14.50%), α-farnesene (9.14%), β-bisabolene (6.52%), and β-sesquiphellandrene (9.92%). The SPME analysis of Curcuma longa showed that main components were ...
DOI:
10.1080/14786419.2018.1488702

20. Study on the source and characteristics of Evodia rutaecarpa based on chemical pattern recognition

Author:
Cao, Xuexiao; Liu, Yanan; Wang, Meng; Sun, Lili; Ren, Xiaoliang
Source:
Natural product research 2019 v.33 no.14 pp. 2113-2115
ISSN:
1478-6427
Subject:
Euodia; chemical composition; chemometrics; cluster analysis; cracking; discriminant analysis; fruits; high performance liquid chromatography; least squares; models; principal component analysis; texture
Abstract:
... In this study, the appearance and texture of E. rutaecarpa were linked with the chemical constituents to explore methods of classification of E. rutaecarpa. The Chemometrics such as Hierarchical cluster analysis (HCA), principal component analysis (PCA) and partial least squares discriminant analysis (PLS-DA) models were used for analysis. According to the models, samples of E. rutaecarpa were div ...
DOI:
10.1080/14786419.2018.1484464