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《Journal of enzyme inhibition and medicinal chemistry》2013,28(6):756-764
A collection of 4-(4-morpholinophenyl)-6-aryl-6H-1,3-thiazin-2-amines (20–28) were synthesized and their in vitro antimicrobial activity was investigated. Compound 21 against P. aeruginosa, 23 against B. subtilis, 24 against V. cholerae and P. aeruginosa, 26 against S. aureus and B. subtilis, 27 against B. subtilis and E. coli, and 28 against all tested bacterial strains exerted excellent antibacterial activity. Compound 20 against A. flavus and Rhizopus, 21, 26 against Rhizopus, 22, 27 against Mucor, 23 against A. flavus, 24 against both A. flavus and Mucor, 25 against all tested strains, and 28 against Rhizopus and M. gypseum exerted excellent antifungal activity. 相似文献
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The sorptive behavior of bacteria—iron oxide composites was investigated in batch metal sorption assays using ferrihydrite in isolation (0.13 and 0.14 g/L ferrihydrite in cadmium and lead systems, respectively) as well as in combination with Bacillus subtilis (0.25 g/L adsorbent mixture) and Escherichia coli (0.27 g/L adsorbent mixture). A pH range from 3.0 to 6.5 was studied using total metal concentrations of 1.0 × 10 ? 4.0 and 3.2 × 10 ? 5 M with adsorbent mixtures proportioned on a 1:1 mass/volume basis. The log of the apparent surface complex formation constants (log K S M ) and sorption capacity (S max ) values were determined by fitting the experimental data to one-site Langmuir sorption isotherms. The one-site model effectively described the sorption data (r 2 > 0.9), where Cd 2 + exhibited somewhat lower sorption affinities (log K S M = ?3 for ferrihydrite, ?1.7 for B. subtilis–ferrihydrite, and ?1.1 for E. coli–ferrihydrite) than Pb 2 + (log K S M = ?0.9 for ferrihydrite, ? 0.2 forB. subtilis–ferrihydrite, and –0.1 for E. coli–ferrihydrite). The corresponding S max values for Cd 2 + and Pb 2 + on ferrihydrite were 0.78 mmole/g and 1.34 mmole/g, respectively. For the B. subtilis–ferrihydrite composites, Cd 2 + and Pb 2 + S max values were lower at 0.29 mmole/g and 0.5 mmole/g, respectively. Similar values were determined for the E. coli–ferrihydrite composites (0.15 mmole/g and 0.68 mmole/g for Cd 2 + and Pb 2 + , respectively). The sorption of Cd 2 + and Pb 2 + by each of the sorbent systems exhibited a strong dependence on pH with sorption edges in the range of pH 4.0 to 7.3. The observed S max of the composites were lower than values predicted upon available site additivity (Cd 2 + B. subtilis ?ferrihydrite : 0.29 mmole/g (observed) < 0.57 mmole/g (calculated); Cd 2 + E. coli ?ferrihydrite : 0.15 mmole/g (observed) < 0.44 mmole/ g (calculated); Pb 2 + B. subtilis ?ferrihydrite : 0.5 mmole/g (observed) < 0.805 mmole/g (calculated); Pb 2 + E. coli –ferrihydrite : 0.68 mmole/g (observed) < 0.775 mmole/g (calculated)), implying that a masking of reactive surface sites by attachment had occurred between the bacteria and ferrihydrite. Electrophoretic mobility analysis indicated that the ferrihydrite surface properties dominate the net surface charge for each composite system with lesser contributions from the bacteria. 相似文献
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Lithospermum (Boraginaceae) comprises approximately 40 species in both the Old and New Worlds, with a center of diversity in the southwestern
United States and Mexico. Using ten cpDNA regions, a phylogeny of Lithospermum and related taxa was reconstructed. Lithospermum (including New World and Old World species) and related New World members of Lithospermeae form a monophyletic group, with
Macromeria, Onosmodium, Nomosa, Lasiarrhenum, and Psilolaemus nested among species of Lithospermum. New World Lithospermeae also is a monophyletic group, with Eurasian species of Lithospermum sister to this group. Because Lithospermum is not monophyletic without the inclusion of the other New World genera, species from these genera are transferred to Lithospermum, and appropriate nomenclatural changes are made. New combinations are Lithospermum album, Lithospermum barbigerum, Lithospermum dodrantale, Lithospermum exsertum, Lithospermum helleri, Lithospemum leonotis, Lithospermum notatum, Lithospermum oaxacanum, Lithospermum pinetorum, Lithospermum rosei, Lithospermum trinverium, and Lithospermum unicum; new names are Lithospermum chiapense, Lithospermum johnstonii, Lithospermum macromeria, Lithospermum onosmodium, Lithospermum rzedowskii, and Lithospermum turneri. 相似文献
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《Biocatalysis and Biotransformation》2013,31(5-6):285-289
AbstractTo clarify the structures of biotransformation products and metabolic pathways, the biotransformation of monoterpenoids, (+)- and (?)-camphorquinone (1a and b), has been investigated using Aspergillus wentii as a biocatalyst. Compound 1a was converted to (?)-(2S)-exo-hydroxycamphor (2a), (?)-(2S)-endo-hydroxycamphor (3a), (?)-(3S)-exo-hydroxycamphor (4a), (?)-(3S)-endo-hydroxycamphor (5a), and (+)-camphoric acid (6a). Compound 1b was converted to (+)-(2R)-exo-hydroxycamphor (2b), (+)-(2R)-endo-hydroxycamphor (3b), (+)-(3R)-exo-hydroxycamphor (4b), (+)-(3R)-endo-hydroxycamphor (5b), and (?)-camphoric acid (6b). Compound 1a mainly produced 2a (65.0%) with stereoselectivity, whereas 1b afforded 3b (84.3%) with high stereoselectivity. These structures were confirmed by gas chromatography–mass spectrometry, infrared, 1H nuclear magnetic resonance (NMR), and 13C NMR spectral data. The products illustrate the marked ability of A. wentii for enzymatic oxidation and ketone reduction. 相似文献
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Job Kuijt 《Brittonia》2009,61(2):144-162
Twelve new South American species of Loranthaceae (Aetanthus, Cladocolea, Oryctanthus, and Struthanthus) and Viscaceae (Dendrophthora and Phoradendron) are described and illustrated: Aetanthus trifolius, Cladocolea rostrifolia, Dendrophthora lanceolata, Dendrophthora rotundata, Dendrophthora tenuis, Dendrophthora werffii, Oryctanthus minor, Phoradendron pascoi, Phoradendron vasquezianum, Struthanthus apiculatus, Struthanthus schultesii, and Struthanthus sessiliflorus. Additionally, Cladocolea alternifolia, previously thought to be probably extinct, is reported to occur on Ilha Grande, just west of Rio de Janeiro, Brazil. 相似文献
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Teruhiko Yoshihara Katsuyoshi Yamaguchi Seiji Takamatsu Sadao Sakamura 《Bioscience, biotechnology, and biochemistry》2013,77(11):2593-2598
Two new phenolic amides, grossamide (7) and N-cis-feruloyl tyramine (2), have been isolated from the roots of bell pepper (Capsicum annuum var. grossum) together with p-aminobenzaldehyde (1), N-trans-feruloyl tyramine (3), N-trans-p-coumaroyl tyramine (4), N-trans-feruloyl octopamine (5), and N-trans-p-coumaroyl octopamine (6). 相似文献
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The species Anomala aereiventris n. sp., A. aspersa n. sp., A. atrivillosa n. sp., A. clarivillosa n. sp., A. contusa n. sp., A. eusticta n. sp., A. hiata n. sp., A. latifalculata n. sp., A. leopardina n. sp., A. levicollis n. sp., A. longisacculata n. sp., A. m-fuscum n. sp., A. perspicax n. sp., A. piccolina n. sp., A. globulata n. sp., A. stillaticia n. sp., A. subridens n. sp., A. subusta n. sp., A. tenoriensis n. sp., A. tuberculata n. sp. and A. vallisneria n. sp. from Costa Rica are described. These species and A. polygona Bates 1888, A. trapezifera Bates 1888 and A. vulcanicola Ohaus 1897 are placed in a new species-group, named after A. trapezifera, whose diagnosis is provided. Their distribution patterns are discussed. 相似文献
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为了解柯拉斯那(Aquilaria crassna)的化学成分,从其所产沉香中分离得到10个化合物,经波谱分析分别鉴定为:6,8-羟基-2-(2-苯乙基)色酮(1),6,8-二羟基-2-[2-(4-甲氧基苯)乙基]色酮(2),rel-(1a R,2R,3R,7b S)-1a,2,3,7b-tetrahydro-2,3-dihydroxy-5-(2-phenylethyl)-7H-oxireno[f][1]benzopyran-7-one(3),rel-(1a R,2R,3R,7b S)-1a,2,3,7b-tetrahydro-2,3-dihydroxy-[2-(4-methoxyphenyl)-ethyl]-7H-oxireno[f][1]benzopyran-7-one(4),rel-(1a R,2R,3R,7b S)-1a,2,3,7b-tetrahydro-2,3-dihydroxy-5-[2-(3-hydroxy-4-methoxyphenyl)-ethyl]-7H-oxireno[f][1]benzopyran-7-one(5),oxidoagarochromone B(6),oxidoagarochromone C(7),(5S,6R,7S,8R)-2-[2-(3′-hydroxy-4′-methoxyphenyl)ethyl]-5,6,7,8-tetrahydroxy-5,6,7,8-tetrahydrochromone(8),6,7-cis-dihydroxy-2-(2-phenylethyl)-5,6,7,8-tetrahydrochromone(9),N-trans-feruloyltyramine(10)。化合物3~5和8~10为首次从柯拉斯那沉香中分离得到。化合物1,3,6,7,9和10对乙酰胆碱酯酶具有一定的抑制活性,化合物4对人慢性髓原白血病细胞株K-562和人胃癌细胞株SGC-7901均具有较小的抑制作用,化合物1和3对人肝癌细胞株BEL-7402也有抑制活性。 相似文献
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Nine new species of the genus Heliura are described from Brazil (H. brasiliana sp. nov., H. olivocolora sp. nov., H. pulcherrima sp. nov., and H. laerteae sp. nov.), Ecuador (H. ecuadoris sp. nov.), Peru (H. flavipennis sp. nov. and H. peruana sp. nov.), and Venezuela (Heliura albiventris sp. nov. and H. juliani sp. nov.). They are illustrated in habitus and genitalia, and their phylogenetic affinities are discussed based on morphological evidence. 相似文献
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Sachio Kudo Takayuki Oritani Kyohei Yamashita 《Bioscience, biotechnology, and biochemistry》2013,77(9):2315-2319
Optically active tiraras-cycloheximide isomers such as cycloheximide [(2S,4S,6R,αR)-form (1)], naramycin B[(25,4S,6RαR)-form(4)], and new stereoisomers (2S,4S,6S,αS)-form (8) and (2S,4S,6R,αS)-from (9) were synthesized by an aldol condensation of trans-2,4-dimethyl-l-cyclohexanone (5b), with 4-(2-oxoethyl)-2,6-piperidinedione(6). The antimicrobial activity of trans- cycloheximide isomers (1, 4, 8, and 9) was examined against S. cerevisiae and P. oryzae. The stereoisomers 1 and 4 exhibited marked antimicrobial activity against both microorganisms as compared with their C- α-epimers 8 and 9. 相似文献
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《Bioscience, biotechnology, and biochemistry》2013,77(10):2367-2374
Synthetic studies of annonaceous acetogenins starting from (?)-muricatacin (1a) or (+)-muricatacin are described, involving (?)-muricatacin (1a), mono-THF acetogenin, solamin (2), reticulatacin (3), (15R, 16R, 19S, 20S)-cis-solamin (4a) and (15S, 16S, 19R, 20R)-cis-solamin (4b), non-adjacent bis-THF acetogenin, 4-deoxygigantecin (5), and epoxide-bearing acetogenin, (15S, 16R, 19S, 20R)-diepomuricanin (6a). 相似文献
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Le genre Cryptotrogus Kraatz, 1888 est étudié. Après étude des spécimens-types des espèces associées et de nouveaux matériels, ce genre est redéfini et Cyphonoxia Reitter, 1889 en est à nouveau considéré comme synonyme. Les nouvelles combinaisons et synonymies suivantes sont établies ou restaurées : Cryptotrogus buettikeri (Sabatinelli & Pontuale, 1998) n. comb., Cryptotrogus delhiensis (Anand, 1988) n. comb., Cryptotrogus haarlovi (Petrovitz, 1955) n. comb., Cryptotrogus kermanensis (Semenov & Medvedev, 1936) n. comb., Cryptotrogus kircheri (Balthasar, 1930) n. comb., Cryptotrogus praestabilis (Reitter, 1889) n. comb., Cryptotrogus tatianae (Semenov & Medvedev, 1936) n. comb., Cryptotrogus zarudnyi (Semenov & Medvedev, 1936) n. comb., Cyphonotus bicoloratus Petrovitz, 1962 n. syn. de Cryptotrogus mesopotamicus (Petrovitz, 1962), Cryptotrogus miksici Petrovitz, 1965, et Cryptotrogus orita (Reitter, 1902) n. syn. de Cryptotrogus niveus (Hampe, 1852), Cyphonoxia glasunowi Semenov, 1897 n. syn. de Cryptotrogus brenskei (Reitter, 1895) comb. rev., Cyphonoxia kermanensis Semenov & Medvedev, 1936 n. syn. de Cryptotrogus zarudnyi (Semenov & Medvedev, 1936) n. comb., Cryptotrogus zemindar (Sharp, 1876) n. comb. Par ailleurs, huit espèces sont décrites et comparées aux espèces proches : sept d’Iran, Cryptotrogus borumandi n. sp., Cryptotrogus ebrahimii n. sp., Cryptotrogus miesseni n. sp., Cryptotrogus mirzayansi n. sp., Cryptotrogus monodi n. sp., Cryptotrogus morgani n. sp. et Cryptotrogus parallelus n. sp., et une, Cryptotrogus irakanus n. sp., d’Irak. Enfin, de nouvelles données sont présentées pour quelques espèces de la faune iranienne appartenant aux genres Melolontha Fabricius, 1775, Anoxia Castelnau, 1832, Polyphylla Harris, 1841 et Microphylla Kraatz, 1890. Une espèce est nouvelle pour la faune d’Iran : Melolontha aceris Faldermann, 1835. 相似文献
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A revision of the New Caledonian genus Paronthobium Paulian 1984 is presented. Anonthobium Paulian 1984 is synonymized with Paronthobium Paulian 1984 after evaluating the diagnostic characters originally introduced by Paulian to separate them. Upon examination of the type specimens, Onthobium caledonicum Paulian 1935 is separated from O. simplex Fauvel 1903 and restored as valid. Anonthobium moui Paulian 1984 is synonymized with Anonthobium micros Paulian 1984. Fifteen new species are described: P. adio n. sp., P. daghfousi n. sp., P. dierkensi n. sp., P. farino n. sp., P. iac n. sp., P. julieni n. sp., P. memaoya n. sp., P. minutum n. sp., P. nasutum n. sp., P. orientale n. sp., P. peckorum n. sp., P. petchecara n. sp., P. subdentatum n. sp., P. taom n. sp. and P. tchingou n. sp. The genus Paronthobium is now composed of 22 species. Illustrations of parameres and of male protibiae are provided for each species. Distribution maps and a key to species are given. 相似文献
16.
Rainer Schimmel 《法国昆虫学会纪事》2013,49(3-4):347-362
Sixteen new species of the genus Zorochros Thomson 1859 from China, Indonesia, Malaysia, Nepal and Thailand are described and illustrated, a key to the species of the Zorochros indicus group is given, and new records on already known species are provided. New species: Z. ahrensi n. sp., Z bingkorensis n. sp., Z. dabieshanensis n. sp., Z. dolini n. sp., Z. hartmanni n. sp., Z. hubeiensis n. sp., Z. karnaliensis n. sp., Z. magnificus n. sp., Z. naniensis n. sp., Z. nigredos n. sp., Z. platiai n. sp., Z schawalleri n. sp., Z. schmidti n. sp., Z. senaroensis n. sp., Z. theodori n. sp., and Z. tongshanensis n. sp. 相似文献
17.
Andrzej Wolski 《法国昆虫学会纪事》2013,49(3-4):311-335
The genus Xenocylapus Bergroth, 1922 is revised. Nine new species, Xenocylapus aculeatus sp. nov., X. aquilonius sp. nov., X. bicolor sp. nov., X. globulus sp. nov., X. heissi sp. nov., X. panamaensis sp. nov., X. serrulatus sp. nov., X. tenuis sp. nov., and X. waorani sp. nov., are described from Brazil, Honduras, Mexico, and Panama. New genus and species Henryfulvius gracilis gen. nov., sp. nov. is described from Ecuador. Illustrations of the male genitalia, color photographs of dorsal and lateral views of the adult of most species, scanning electron micrographs of selected structures of X. tenuis, and keys to species of the genus Xenocylapus are provided. 相似文献
18.
Summary. The Adoretini of the Malagasy endemic genus Adorodocia Brenske 1893 is revised. Fourteen new species and one new subspecies are described and compared with their most closely related species: A. constricta n. sp., A. cuccodoroi n. sp., A. flava n. sp., A. liliae n. sp., A. marginata n. sp., A. peyrierasi n. sp., A. pseudoconstricta n. sp., A. pseudoflava n. sp., A. pseudostrigata n. sp., A. recta n. sp., A. robusta n. sp., A. sogai n. sp., A. vadoni n. sp., A. viettei n. sp. and A. vittaticollis flavipes n. ssp. The synonymy between Adoretus strigatus Waterhouse 1878, and Pseudadorodocia aenigma Arrow 1901, is confirmed. Thus, based on the results of this study, the genus Adorodocia includes 16 species, and one of them is represented by two subspecies. Diagnostic characters to separate the species in the genus deal mostly with the shape of parameres, color of body and legs, shape of pronotum and female eighth tergite, setation of pronotum and elytra. Key to species, diagnoses and distribution for each species are provided. Endophallus and female genitalia are illustrated for the first time for this genus. 相似文献
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Kenneth Marantz 《Arts Education Policy Review》2013,114(4):44-47
Abstract Marion Endicott, Emily Carr: The Story of an Artist, Women's Educational Press: Toronto, Canada, 1981, 64 pages, n.p.i. (paperback) Jean Lipman with Margaret Aspin-wall, Alexander Calder and his Magic Mobiles, Hudson Hills Press: New York, 1981, 96 pages, $15.00 M. B. Goffstein, Lives of the Artists, Farrar, Straus & Giroux: New York, 1982, unpaged, $8.95 Trina Schart Hyman, Self-Portrait, Addison-Wesley: Reading, Massachusetts, 1981, unpaged, $8.95 Andrew Glass, Jackson Makes his Move, Warne: New York, 1982, unpaged, $9.95 Tom Seidmann-Freud, The Magic Boat, Greenwillow: New York, 1981, unpaged, $5.95 Ernest Nister, Magic Windows, Philomel Books: New York, 1980, unpaged, $6.95 Lothar Meggendorfer, The City Park, Viking: New York, 1981, unpaged, $10.95 J. F. Schreiber (verses by Anthea Bell), The Great Menagerie, Viking: New York, 1980, unpaged, $7.95 Lothar Meggendorfer, International Circus, Viking: New York, 1980, unpaged, $7.95 Eric Hill, Spot's First Walk, G. P. Putnam's Sons: New York, 1981, unpaged, $7.95 Robert Crowther and lames R. Diaz (paper engineer), The Most Amazing Hide-and-Seek Counting Book, Viking: New, York, 1981, 14 pages, $8.95 Demi, Where is Willie Worm? Random House: New York, 1981, unpaged, $3.50 John Goodall and Tor Lokvig (paper engineer), PADDY FINDS A JOB, Atheneum: New York, 1981, unpaged, $6.95 Eric Carle, The Honeybee and the Robber, Philomel: New York, 1981, 15 pages, $10.95 相似文献
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铁皮石斛内生真菌次生代谢产物研究 总被引:1,自引:0,他引:1
为了解铁皮石斛(Dendrobium officinale)内生真菌Phyllosticta aristolochiicola的次生代谢产物,从该真菌中分离得到15个化合物,经波谱分析分别鉴定为N-methyl-2-pyrolidinone (1)、环-(甘氨酸-L-脯氨酸)(2)、环-(D-丙氨酸-L-脯氨酸)(3)、环-(L-缬氨酸-L-脯氨酸)(4)、环-(L-亮氨酸-L-脯氨酸)(5)、cyclo-(L-Leu-D-4-hydroxyprolinyl)(6)、环-(L-苯丙氨酸-L-脯氨酸)(7)、环-(L-苯丙氨酸-L-4-羟基脯氨酸)(8)、环-(L-酪氨酸-L-脯氨酸)(9)、环-(L-苯丙氨酸-L-亮氨酸)(10)、啤酒甾醇(11)、对羟基苯乙醇(12)、对羟基苯乙酸(13)、(2S,3R)-1-(4-羟基苯基)丁烷-2,3-二醇(14)和(2R,3S)-1-苯基丁烷-2,3-二醇(15)。采用MTS法检测抗肿瘤活性表明,化合物2、10和14对HL-60、A-549、SMMC-7721、MCF-7和SW-480细胞株具有一定的抑制活性。 相似文献