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CHEMISTRY (583 journals)                  1 2 3 4 5 6 | Last

2D Materials     Hybrid Journal   (Followers: 5)
Accreditation and Quality Assurance: Journal for Quality, Comparability and Reliability in Chemical Measurement     Hybrid Journal   (Followers: 26)
ACS Catalysis     Full-text available via subscription   (Followers: 30)
ACS Chemical Neuroscience     Full-text available via subscription   (Followers: 16)
ACS Combinatorial Science     Full-text available via subscription   (Followers: 17)
ACS Macro Letters     Full-text available via subscription   (Followers: 20)
ACS Medicinal Chemistry Letters     Full-text available via subscription   (Followers: 24)
ACS Nano     Full-text available via subscription   (Followers: 212)
ACS Photonics     Full-text available via subscription   (Followers: 5)
ACS Synthetic Biology     Full-text available via subscription   (Followers: 13)
Acta Chemica Iasi     Open Access  
Acta Chimica Sinica     Full-text available via subscription  
Acta Chimica Slovaca     Open Access   (Followers: 5)
Acta Chromatographica     Full-text available via subscription   (Followers: 9)
Acta Facultatis Medicae Naissensis     Open Access   (Followers: 1)
Acta Metallurgica Sinica (English Letters)     Hybrid Journal   (Followers: 7)
adhäsion KLEBEN & DICHTEN     Hybrid Journal   (Followers: 5)
Adhesion Adhesives & Sealants     Hybrid Journal   (Followers: 5)
Adsorption Science & Technology     Full-text available via subscription   (Followers: 11)
Advanced Functional Materials     Hybrid Journal   (Followers: 42)
Advanced Science Focus     Free   (Followers: 2)
Advances in Chemical Engineering and Science     Open Access   (Followers: 24)
Advances in Chemical Science     Open Access   (Followers: 9)
Advances in Colloid and Interface Science     Full-text available via subscription   (Followers: 14)
Advances in Drug Research     Full-text available via subscription   (Followers: 17)
Advances in Enzyme Research     Open Access  
Advances in Fluorine Science     Full-text available via subscription   (Followers: 7)
Advances in Fuel Cells     Full-text available via subscription   (Followers: 13)
Advances in Heterocyclic Chemistry     Full-text available via subscription   (Followers: 8)
Advances in Materials Physics and Chemistry     Open Access   (Followers: 14)
Advances in Nanoparticles     Open Access   (Followers: 11)
Advances in Organometallic Chemistry     Full-text available via subscription   (Followers: 9)
Advances in Polymer Science     Hybrid Journal   (Followers: 37)
Advances in Protein Chemistry     Full-text available via subscription   (Followers: 6)
Advances in Protein Chemistry and Structural Biology     Full-text available via subscription   (Followers: 10)
Advances in Quantum Chemistry     Full-text available via subscription   (Followers: 6)
African Journal of Chemical Education     Open Access   (Followers: 1)
African Journal of Pure and Applied Chemistry     Open Access   (Followers: 5)
Afrique Science : Revue Internationale des Sciences et Technologie     Open Access   (Followers: 1)
Agrokémia és Talajtan     Full-text available via subscription   (Followers: 1)
Alkaloids: Chemical and Biological Perspectives     Full-text available via subscription   (Followers: 4)
AMB Express     Open Access  
Ambix     Hybrid Journal   (Followers: 2)
American Journal of Applied Sciences     Open Access   (Followers: 31)
American Journal of Biochemistry and Biotechnology     Open Access   (Followers: 95)
American Journal of Biochemistry and Molecular Biology     Open Access   (Followers: 11)
American Journal of Chemistry     Open Access   (Followers: 20)
American Journal of Plant Physiology     Open Access   (Followers: 10)
American Mineralogist     Full-text available via subscription   (Followers: 8)
Analyst     Full-text available via subscription   (Followers: 38)
Angewandte Chemie     Hybrid Journal   (Followers: 21)
Angewandte Chemie International Edition     Hybrid Journal   (Followers: 150)
Annales UMCS, Chemia     Open Access   (Followers: 2)
Annals of Clinical Chemistry and Laboratory Medicine     Open Access   (Followers: 1)
Annual Reports in Computational Chemistry     Full-text available via subscription   (Followers: 1)
Annual Reports Section A (Inorganic Chemistry)     Full-text available via subscription   (Followers: 3)
Annual Reports Section B (Organic Chemistry)     Full-text available via subscription   (Followers: 7)
Annual Review of Chemical and Biomolecular Engineering     Full-text available via subscription   (Followers: 10)
Annual Review of Food Science and Technology     Full-text available via subscription   (Followers: 13)
Anti-Infective Agents     Hybrid Journal   (Followers: 2)
Antiviral Chemistry and Chemotherapy     Full-text available via subscription  
Applied Organometallic Chemistry     Hybrid Journal   (Followers: 4)
Applied Spectroscopy     Full-text available via subscription   (Followers: 16)
Applied Surface Science     Hybrid Journal   (Followers: 22)
Arabian Journal of Chemistry     Full-text available via subscription   (Followers: 6)
ARKIVOC     Open Access   (Followers: 1)
Asian Journal of Biochemistry     Open Access   (Followers: 1)
Australian Journal of Chemistry     Hybrid Journal   (Followers: 5)
Autophagy     Hybrid Journal   (Followers: 2)
Avances en Quimica     Open Access   (Followers: 1)
Biochemical Pharmacology     Hybrid Journal   (Followers: 6)
Biochemistry     Full-text available via subscription   (Followers: 167)
Biochemistry Insights     Open Access   (Followers: 4)
Biochemistry Research International     Open Access   (Followers: 5)
BioChip Journal     Hybrid Journal   (Followers: 1)
Bioinorganic Chemistry and Applications     Open Access   (Followers: 5)
Bioinspired Materials     Open Access   (Followers: 1)
Biointerface Research in Applied Chemistry     Open Access   (Followers: 1)
Biointerphases     Open Access   (Followers: 1)
Biomacromolecules     Full-text available via subscription   (Followers: 19)
Biomass Conversion and Biorefinery     Partially Free   (Followers: 7)
Biomedical Chromatography     Hybrid Journal   (Followers: 7)
Biomolecular NMR Assignments     Hybrid Journal   (Followers: 2)
BioNanoScience     Partially Free   (Followers: 4)
Bioorganic & Medicinal Chemistry     Hybrid Journal   (Followers: 31)
Bioorganic & Medicinal Chemistry Letters     Hybrid Journal   (Followers: 25)
Bioorganic Chemistry     Hybrid Journal   (Followers: 5)
Biopolymers     Hybrid Journal   (Followers: 16)
Biosensors     Open Access   (Followers: 3)
Biotechnic and Histochemistry     Hybrid Journal   (Followers: 3)
Boletin de la Sociedad Chilena de Quimica     Open Access  
Bulletin of the Chemical Society of Ethiopia     Open Access   (Followers: 2)
Bulletin of the Chemical Society of Japan     Full-text available via subscription   (Followers: 14)
C - Journal of Carbon Research     Open Access  
Cakra Kimia (Indonesian E-Journal of Applied Chemistry)     Open Access  
Canadian Association of Radiologists Journal     Full-text available via subscription   (Followers: 3)
Canadian Journal of Chemistry     Full-text available via subscription   (Followers: 5)
Canadian Mineralogist     Full-text available via subscription   (Followers: 2)
Carbohydrate Research     Hybrid Journal   (Followers: 11)
Carbon     Hybrid Journal   (Followers: 78)

        1 2 3 4 5 6 | Last

Journal Cover   Chemistry & Biodiversity
  [SJR: 0.723]   [H-I: 40]   [5 followers]  Follow
   Hybrid Journal Hybrid journal (It can contain Open Access articles)
   ISSN (Print) 1612-1872 - ISSN (Online) 1612-1880
   Published by John Wiley and Sons Homepage  [1597 journals]
  • Contents: C&B 9/2015
    • PubDate: 2015-09-13T11:13:07.490721-05:
      DOI: 10.1002/cbdv.201580911
  • Chemical Constituents of Plants from the Genus Buxus
    • Authors: Jie Zhang; Xiang-Yang Qin, Shou-De Zhang, Xu-Sheng Xu, Jin-Peng Pei, Jian-Jun Fu
      Pages: 1289 - 1306
      PubDate: 2015-09-13T11:13:07.190846-05:
      DOI: 10.1002/cbdv.201400185
  • Mitsunobu Alkylation of Cancerostatic 5-Fluorouridine with
           (2E)-10-Hydroxydec-2-enoic Acid, a Fatty Acid from Royal Jelly with
           Multiple Biological Activities
    • Authors: Vanessa Ottenhaus; Helmut Rosemeyer
      Pages: 1307 - 1312
      Abstract: 5-Fluorouridine (1) – a nucleoside antimetabolite with strong cancerostatic properties – was protected i) at the 2′- and 3′-OH groups with a heptan-4-ylidene residue and ii) at the 5′-OH group with a (4-methoxyphenyl)(diphenyl)methyl residue. This fully protected compound, 3, was submitted to a Mitsunobu reaction with the N-hydroxysuccinimide (NHS) ester, 5, of (2E)-10-hydroxydec-2-enoic acid (4) which gave nucleolipid 6. The latter was detritylated with Cl2CHCOOH to yield the co-drug 7 as NHS ester.
      PubDate: 2015-09-13T11:13:11.298789-05:
      DOI: 10.1002/cbdv.201500048
  • Secondary Metabolites from Aspergillus fumigatus, an Endophytic Fungus
           from the Liverwort Heteroscyphus tener (Steph.) Schiffn.
    • Authors: Fei Xie; Xiao-Bin Li, Jin-Chuan Zhou, Qing-Qing Xu, Xiao-Ning Wang, Hui-Qing Yuan, Hong-Xiang Lou
      Pages: 1313 - 1321
      Abstract: Three new metabolites, asperfumigatin (1), isochaetominine (10), and 8′-O-methylasterric acid (21), together with nineteen known compounds, were obtained from the culture of Aspergillus fumigatus, an endophytic fungus from the Chinese liverwort Heteroscyphus tener (Steph.) Schiffn. Their structures were established by extensive analysis of the spectroscopic data. The absolute configurations of 1 and 10 were determined by analysis of their respective CD spectra. Cytotoxicity of these isolates against four human cancer cell lines was also determined.
      PubDate: 2015-09-13T11:13:11.493162-05:
      DOI: 10.1002/cbdv.201400317
  • Argania spinosa var. mutica and var. apiculata: Variation of Fatty-Acid
           Composition, Phenolic Content, and Antioxidant and
           α-Amylase-Inhibitory Activities among Varieties, Organs, and
           Development Stages
    • Pages: 1322 - 1338
      Abstract: Argania spinosa includes two varieties, var. apiculata and var. mutica. These argan varieties were introduced into Tunisia in ancient times and are actually cultivated in some botanic gardens. Little is known about the chemical differentiation among these argan varieties. Hence, the aim of this study was to determine the fatty-acid composition, the total phenolic and flavonoid contents, and the antioxidant and α-amylase-inhibitory activities of leaf, seed, and pulp extracts of both argan varieties harvested during the months of January to April. The fatty-acid distribution was found to depend on the argan variety, the plant organ, and the harvest time. Significant variations in the phenolic contents were observed between the investigated varieties as well as between leaves, pulps, and seeds of each variety. As expected, phenolic compounds were found to be contributors to the antioxidant and α-amylase-inhibitory activities of both argan varieties. The chemical differentiation observed among the two argan varieties, based mainly on the fatty-acid composition, might have some chemotaxonomic value.
      PubDate: 2015-09-13T11:13:10.353844-05:
      DOI: 10.1002/cbdv.201400328
  • Recent Findings in the Chemistry of Odorants from Four Baccharis Species
           and Their Impact as Chemical Markers
    • Pages: 1339 - 1348
      Abstract: Baccharis is a widespread genus belonging to the Asteraceae family that includes almost 400 species exclusively from the Americas. Even when studied in detail, the taxonomic classification among species from this genus is not yet fully defined. Within the framework of our study of the volatile composition of the Baccharis genus, four species (B. trimera, B. milleflora, B. tridentata, and B. uncinella) were collected from the ‘Campos de Cima da Serra’ highlands of the Brazilian state of Rio Grande do Sul. The aerial parts were dried and extracted by the simultaneous distillation extraction (SDE) procedure. This is the first time that SDE has been applied to obtain and compare the volatile-extract composition in the Baccharis genus. Characterization of the volatile extracts allowed the identification of 180 peaks with many coeluting components; these latter being detailed for the first time for this genus. The multivariate statistical analyses allowed separating the volatile extracts of the four populations of Baccharis into two separate groups. The first one included the B. milleflora, B. trimera, and B. uncinella volatile extracts. The three species showed a high degree of similarity in their volatile composition, which was characterized by the presence of high contents of sesquiterpene compounds, in particular of spathulenol. The second group comprised the extract of B. tridentata, which contained α-pinene, β-pinene, limonene, and (E)-β-ocimene in high amounts.
      PubDate: 2015-09-13T11:13:10.902669-05:
      DOI: 10.1002/cbdv.201400329
  • Polyketides from Mantis-Associated Fungus Daldinia eschscholzii IFB-TL01
    • Authors: Gang Wang; Jing-Yang Fan, Wen-Jing Zhang, Cheng-Pin Hua, Chao-Jun Chen, Wei Yan, Hui-Ming Ge, Rui-Hua Jiao, Ren-Xiang Tan
      Pages: 1349 - 1355
      Abstract: Three new polyketides, named daldinone F (1), nodulisporin G (2), and dalmanol C (3), together with five known compounds, 4–8, were isolated from cultures of Daldinia eschscholzii. The structures of the new compounds were elucidated by extensive NMR and MS analyses. Compound 1 showed moderate cytotoxic activity against SW480 cancer cells with an IC50 value of 9.59 μM, and its absolute configuration was determined by single crystal X-ray diffraction.
      PubDate: 2015-09-13T11:13:08.63951-05:0
      DOI: 10.1002/cbdv.201400414
  • Diterpenes from the Roots of Oryza sativa L. and Their Inhibition Activity
           on NO Production in LPS-Stimulated RAW264.7 Macrophages
    • Pages: 1356 - 1364
      Abstract: Two new pimarane diterpenoids, momilactone D (3) and momilactone E (5), along with three known diterpenoids, momilactone A (1), sandaracopimaradien-3-one (2), and oryzalexin A (4) were isolated from Oryza sativa roots. The chemical structures of the compounds were determined by spectroscopic data analysis. The isolated diterpenoids were evaluated for their ability to inhibit NO production and iNOS mRNA and protein expression in LPS-stimulated RAW264.7 macrophages. Compound 4 showed strong inhibition activity on NO production, and compounds 1 and 4 decreased the expression of iNOS mRNA and protein levels.
      PubDate: 2015-09-13T11:13:08.817078-05:
      DOI: 10.1002/cbdv.201400239
  • Studying the Structural and Folding Features of Long-Sequence
           Trichobrachin Peptides
    • Pages: 1365 - 1377
      Abstract: In this theoretical study, the folding processes of long-sequence trichobrachin peptides (i.e., TB IIb peptides) were investigated by molecular dynamics methods. The formation of various helical structures (i.e., 310-, α-, and left-handed α-helices) was studied with regard to the entire sequence of peptides, as well as to each amino acid. The results pointed out that TB IIb molecules showed a propensity to form helical conformations, and they could be characterized by 310-helical structure rather than by α-helical structure. The formation of local (i.e., ii+3 and ii+4) as well as of non-local (i.e., ii+n, where n>4; and all ii+n) H-bonds was also examined. The results revealed that the occurrence of local, helix-stabilizing H-bonds was in agreement with the appearance of helical conformations, and the non-local H-bonds did not produce relevant effects on the evolution of helical structures. Based on the data obtained by our structural investigation, differences were observed between the TB IIb peptides, according to the type of amino acid located in the 17th position of their sequences. In summary, the folding processes were explored for TB IIb molecules, and our theoretical study led to the conclusion that these long-sequence peptaibols showed characteristic structural and folding features.
      PubDate: 2015-09-13T11:13:10.170112-05:
      DOI: 10.1002/cbdv.201400280
  • Essential Oils and Diethyl Ether Extracts of Serbian Xeranthemum
           cylindraceum and X. annum: Chemical Composition, Antimicrobial Activity,
           and Chemotaxonomic Implications
    • Pages: 1378 - 1397
      Abstract: Detailed GC and GC-MS analyses of the essential oils and Et2O extracts of two Xeranthemum species – X. cylindraceum and X. annum – resulted in the identification of 254 components, in total. Terpenoids constituted the major part of both X. cylindraceum and X. annum essential oils and extracts (51.8–65.7%, and 50.7%, resp.). Among the sesquiterpenoids, the extracts of both investigated taxa contained the guaianolide xerantholide, its 11,13-dihydro derivatives, and two additional sesquiterpene lactones: an eudesmanolide, 11,13-dihydroisoalantolactone, and a pseudoguaianolide, confertin. The last two lactones and both isomers of 11,13-dihydroxerantholide have not been previously detected in Xeranthemum species. The isolated extracts of X. cylindraceum and X. annum were tested in a broth microdilution assay against a panel of microorganisms. The tested extracts demonstrated significant antimicrobial inhibitory activity, ranging from 30 to 260 μg/ml, being most active against Bacillus cereus and Staphylococcus aureus, an important human pathogen, with MIC close in value to those of chloramphenicol. Chemotaxonomic significance of the sesquiterpene lactones' distribution in the taxa investigated in this study and those detected earlier in phylogenetically close species (up to the level of the tribe Cardueae) was also discussed.
      PubDate: 2015-09-13T11:13:07.54626-05:0
      DOI: 10.1002/cbdv.201400316
  • Bioactive Steroid Derivatives and Butyrolactone Derivatives from a
           Gorgonian-Derived Aspergillus sp. Fungus
    • Authors: Min Chen; Kai-Ling Wang, Min Liu, Zhi-Gang She, Chang-Yun Wang
      Pages: 1398 - 1406
      Abstract: Six steroid derivatives, 1–6, and five butyrolactone derivatives, 7–11, were isolated from the fermentation broth of a gorgonian-derived Aspergillus sp. fungus. Their structures were elucidated on the basis of NMR and MS spectral data. Compound 1 is a new, highly conjugated steroid. The NMR and MS data of 7 and 8 are reported for the first time, as their structures were listed in SciFinder Scholar with no associated reference. Compounds 1, 4, 5, and 8–11 inhibited the larval settlement of barnacle Balanus amphitrite with EC50 values ranging from 0.63 to 18.4 μg ml−1. Butyrolactone derivatives 7 and 8 showed pronounced antibacterial activities against Staphylococcus aureus with the same MIC values as the positive control ciprofloxacin (MIC 1.56 μM for all three compounds).
      PubDate: 2015-09-13T11:13:09.449267-05:
      DOI: 10.1002/cbdv.201400321
  • Merosesquiterpenoids and Ten-Membered Macrolides from a Soft Coral-Derived
           Lophiostoma sp. Fungus
    • Authors: Cai-Juan Zheng; Chang-Lun Shao, Min Chen, Zhi-Gang Niu, Dong-Lin Zhao, Chang-Yun Wang
      Pages: 1407 - 1414
      Abstract: One new merosesquiterpenoid, craterellin D (1), along with one known analog, craterellin A (2), and five known ten-membered macrolides, 3–7, were isolated from a soft coral-derived Lophiostoma sp. fungus. The absolute configuration of 1 was established based on biogenetic consideration with the co-isolated analog 2, whose configuration was determined by modified Mosher's method and single-crystal X-ray diffraction analysis using CuKα radiation. The absolute configuration of 3 was determined by X-ray diffraction analysis using CuKα radiation. Compounds 2 and 3 showed antibacterial activities against Bacillus cereus with a MIC value of 3.12 μM.
      PubDate: 2015-09-13T11:13:08.421277-05:
      DOI: 10.1002/cbdv.201400331
  • Effect of Volatile Organic Compounds from Bacteria on Nematodes
    • Authors: You-Yao Xu; Hao Lu, Xin Wang, Ke-Qin Zhang, Guo-Hong Li
      Pages: 1415 - 1421
      Abstract: The five studied bacterial strains could produce volatile organic compounds (VOCs) that kill nematodes. Based on their 16S rRNA sequences, these strains were identified as Pseudochrobactrum saccharolyticum, Wautersiella falsenii, Proteus hauseri, Arthrobacter nicotianae, and Achromobacter xylosoxidans. The bacterial VOCs were extracted using solid-phase micro-extraction (SPME) and subsequently identified by GC/MS analysis. The VOCs covered a wide range of aldehydes, ketones, alkyls, alcohols, alkenes, esters, alkynes, acids, ethers, as well as heterocyclic and phenolic compounds. Among the 53 VOCs identified, 19 candidates, produced by different bacteria, were selected to test their nematicidal activity (NA) against Caenorhabditis elegans and Meloidogyne incognita. The seven compounds with the highest NAs were acetophenone, S-methyl thiobutyrate, dimethyl disulfide, ethyl 3,3-dimethylacrylate, nonan-2-one, 1-methoxy-4-methylbenzene, and butyl isovalerate. Among them, S-methyl thiobutyrate showed a stronger NA than the commercial insecticide dimethyl disulfide. It was reported for the first time here that the five bacterial strains as well as S-methyl thiobutyrate, ethyl 3,3-dimethylacrylate, 1-methoxy-4-methylbenzene, and butyl isovalerate possess NA. These strains and compounds might provide new insights in the search for novel nematicides.
      PubDate: 2015-09-13T11:13:09.908822-05:
      DOI: 10.1002/cbdv.201400342
  • Detection of a New Piperideine Alkaloid in the Pygidial Glands of Some
           Stenus Beetles
    • Pages: 1422 - 1434
      Abstract: Rove beetles of the genus Stenus produce and store bioactive alkaloids like stenusine (3), 3-(2-methylbut-1-enyl)pyridine (4), and cicindeloine (5) in their pygidial glands to protect themselves from predation and microorganismic infestation. The biosynthesis of stenusine (3), 3-(2-methylbut-1-enyl)pyridine (4), and cicindeloine (5) was previously investigated in Stenus bimaculatus, Stenus similis, and Stenus solutus, respectively. The piperideine alkaloid cicindeloine (5) occurs also as a major compound in the pygidial gland secretion of Stenus cicindeloides. The three metabolites follow the same biosynthetic pathway, where the N-heterocyclic ring is derived from L-lysine and the side chain from L-isoleucine. The different alkaloids are finally obtained by few modifications of shared precursor molecules, such as 2,3,4,5-tetrahydro-5-(2-methylbutylidene)pyridine (1). This piperideine alkaloid was synthesized and detected by GC/MS and GC at a chiral phase in the pygidial glands of Stenus similis, Stenus tarsalis, and Stenus cicindeloides.
      PubDate: 2015-09-13T11:13:11.998889-05:
      DOI: 10.1002/cbdv.201400391
  • Nematicidal Triterpenoids from Lantana camara
    • Pages: 1435 - 1442
      Abstract: A new triterpene, lancamarolide (1), and seven known triterpenes, oleanonic acid (2), lantadene A (3), 11α-hydroxy-3-oxours-12-en-28-oic acid (4), betulinic acid (5), lantadene B (6), and lantaninilic acid (7) were isolated from the aerial parts of Lantana camara in the course of bioassay-guided isolation, and their nematicidal activities against Meloidogyne incognita, the root knot nematode, were carried out. Oleanonic acid was found to be the most active compound and exhibited 80% mortality after 72 h at 0.0625% concentration, which is comparable with that of the standard furadan.
      PubDate: 2015-09-13T11:13:09.053836-05:
      DOI: 10.1002/cbdv.201400460
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