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1Author    O. Rlando, M. Uñoz3, RaúlC. Peñab, Enrique Ureta, GloriaM. Ontenegro0, B. Arbara, N. TimmermanncRequires cookie*
 Title    Propolis from Chilean Matorral Hives  
 Abstract    Viscidone (0.5%), vanillin, 3',4'-(m ethylendioxy)acetophenone, 3-ethoxy-4-methoxybenz-aldehyde, cinnamic acid, 3-methoxy-4-hydroxymethyl ester were isolated from propolis o f hives from Cuncumen. This is the first report on propolis composition o f an arid and a Mediterranean type climate area. 
  Reference    Z. Naturforsch. 56c, 269 (2001); received September 8/N ovem ber 16 2000 
  Published    2001 
  Keywords    Propolis, Structure Elucidation, Plant Sources 
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 TEI-XML for    default:Reihe_C/56/ZNC-2001-56c-0269.pdf 
 Identifier    ZNC-2001-56c-0269 
 Volume    56 
2Author    K. Taraz, D. Seinsche, H. BudzikiewiczRequires cookie*
 Title    Pseudobactin-und Pseudobactin A-Varianten: Neue Peptidsiderophore vom Pyoverdin-Typ aus Pseudomonas fluovescens "E2" [1] Variants of Pseudobactin and Pseudobactin A: New Pyoverdin Type Peptide Siderophores from Pseudomonas fluorescens "E 2"  
 Abstract    From a strain of Pseudomonas fluorescens pseudobactin and several related compounds were isolated and their structures were elucidated. In this way a reference compound (5) could be obtained for the unambiguous determination of the absolute configuration of C-l of the pyoverdin chromophore in newly isolated representatives of this class. 
  Reference    Z. Naturforsch. 46c, 522—526 (1991); received February 20/April 9 1991 
  Published    1991 
  Keywords    Pseudomonas fluorescens, Siderophores, Pyoverdins, Pseudobactin, Structure Elucidation 
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 TEI-XML for    default:Reihe_C/46/ZNC-1991-46c-0522.pdf 
 Identifier    ZNC-1991-46c-0522 
 Volume    46 
3Author    H. Lert, K. T. Araz, H. BudzikiewiczRequires cookie*
 Title    Serratiochelin, a New Catecholate Siderophore from Serratia marcescens  
 Abstract    The catecholate siderophore serratiochelin isolated from an iron deficient culture medium of Serratia marcescens TW was characterized by mass spectrometry and NMR and by GC/MS analysis of the hydrolysis products as l-(2,3-dihydroxybenzamido)-3-[4 S,5i?-2-(2,3-dihy-droxyphenyl)-5-methyl-2-oxazoline-4-carboxamido]propane. The structure of serratiochelin was confirmed by synthesis. The bacterial strain also produces chrysobactin. In tro d u ctio n 
  Reference    Z. Naturforsch. 49c, 11—17 (1994); received October ll/D ecem ber 201993 
  Published    1994 
  Keywords    Catecholate Siderophore, Serratiochelin, Chrysobactin, Structure Elucidation, Serratia marcescens 
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 TEI-XML for    default:Reihe_C/49/ZNC-1994-49c-0011.pdf 
 Identifier    ZNC-1994-49c-0011 
 Volume    49 
4Author    Michael Assmann3, VictorW. Rayb, RobW M Van Soestc, Peter Proksch3Requires cookie*
 Title    Aiolochroia crassa*  
 Abstract    A detailed analysis of the chemical constituents of a Caribbean specimen of Aiolochroia crassa was performed. Five brominated products (1 -5) were isolated and one of these was a new bromotyrosine metabolite. The structure of the new compound 1 has been established from spectral studies. Compounds 1 and 2, which are the major brominated metabolites and have not been previously identified in any Aiolochroia species, could be usefully employed as chemotaxonomic markers. 
  Reference    Z. Naturforsch. 53c, 398 (1998); received April 8 1998 
  Published    1998 
  Keywords    Sponges, Aiolochroia crassa, Isoxazoline Alkaloids, Structure Elucidation 
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 TEI-XML for    default:Reihe_C/53/ZNC-1998-53c-0398.pdf 
 Identifier    ZNC-1998-53c-0398 
 Volume    53 
5Author    Ru Angelie, Edrada3, Victor Wrayb, Ludger Wittec, Leen Van Ofwegend, Peter Proksch3Requires cookie*
 Title    Bioactive Terpenes from the Soft Coral Heteroxenia sp. from Mindoro, Philippines  
 Abstract    0 0 4 9 /9 31-8886182. E-m ail: proksch@botanik.uni-wuerzburg.de b Gesellschaft für Biotechnologische Forschung mbH, M ascheroder Weg A marine soft coral species of the genus Heteroxenia collected from Mindoro Island, Philip­ pines yielded two cadinene sesquiterpenes, (+)-a-m uurolene (1) and a novel derivative (+)-6 -hydroxy-a-muurolene (2), as well as the biologically active polyhydroxysterol, sarcoaldost-erol A (3). The structure of the novel compound was unambiguously established on the basis of NM R spectroscopic (! H, 13C, CO SY, ! H-detected direct and long range 13C -'H correla­ tions) and mass spectrom etric (E IM S) data. All compounds were active against the phytopa-thogenic fungus Cladosporium cucum erinum . The isolated terpenes were also active in the brine shrimp lethality test. 
  Reference    Z. Naturforsch. 55c, 82—8 (2000); received August 1999 
  Published    2000 
  Keywords    Corals, Heteroxenia, Cadinene Sesquiterpenes, Structure Elucidation, Bioactivity 
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 TEI-XML for    default:Reihe_C/55/ZNC-2000-55c-0082.pdf 
 Identifier    ZNC-2000-55c-0082 
 Volume    55 
6Author    Z. NaturforschRequires cookie*
 Title    Phenolic Compounds of Propolis from Central Chilean Matorral  
 Abstract    Pinocembrin, acacetin, galanguin, izalpin, kaempferide, prenyletin and diarytheptane were isolated from propolis from Central Chile. 
  Reference    Z. Naturforsch. 56c, 273—2 (2001); received D ecem ber 6 2000/January 23 2001 
  Published    2001 
  Keywords    Propolis, Structure Elucidation, Plant Sources, Phenolics 
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 TEI-XML for    default:Reihe_C/56/ZNC-2001-56c-0273.pdf 
 Identifier    ZNC-2001-56c-0273 
 Volume    56 
7Author    R. Teeyapant3, H.J W Oerdenbagb, P. Kreis3, J. Hacker0, V. W. Rayd, L. Witte6, P. Proksch3Requires cookie*
 Title    Antibiotic and Cytotoxic Activity of Brominated Compounds from the Marine Sponge Verongia aerophoba  
 Abstract    Analysis of the marine sponge Verongia aerophoba from the Canary Islands afforded eight brominated secondary metabolites including the small molecular weight compounds aeroply-sinin-1 (5) and the dienone (7) which were previously shown to arise by enzymatically cata­ lyzed degradation of aerophobin-2 (4) and isofistularin-3 (1) following breakdown of the cellu­ lar compartmentation o f the sponge. All compounds were identified from their NM R and mass spectra. Aeroplysinin-1 as well as dienone which arise from isofistularin-3 or aeropho­ bin-2 by biotransformation within the sponge showed a significantly higher antibiotic as well as cytotoxic activity than their biogenetic precursors. Antibiotic activity was studied with re­ spect to several gram-positive and gram-negative bacteria including B. subtilis, S. aureus and E. coli. The MICs (MBCs) of aeroplysinin-1 (5) and the dienone (7) varied between 12.5-25 (50-100) ng/ml respectively. Cytotoxicity was tested in vitro towards HeLa cells, a human cervix uteri tumour cell line. Aeroplysinin-1 (5) and the dienone (7) displayed pronounced cytotoxic activity with IC50s of 3.0 and 3.2 |iM respectively. A five-fold increase in cytotoxicity was observed after O-acetylation of the dienone (7). The IC50 of the dienone O-acetate (0.6 ^im) was comparable to that o f the clinically used anticancer drug cisplatin (0.7 ^m). 
  Reference    Z. Naturforsch. 48c, 939—945 (1993); received July 16/August30 1993 
  Published    1993 
  Keywords    Verongia aerophoba, Sponges, Secondary Metabolites, Structure Elucidation, Antibiotic Activity 
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 TEI-XML for    default:Reihe_C/48/ZNC-1993-48c-0939.pdf 
 Identifier    ZNC-1993-48c-0939 
 Volume    48 
8Author    M. Adolphs, K. Taraz, H. BudzikiewiczRequires cookie*
 Title    Catecholate Siderophores from Chryseomonas luteola  
 Abstract    Two catecholate siderophores (chrysobactin and chryseomonin) were isolated from an iron-deficient culture medium of Chryseom onas luteola. Their structures were elucidated by chemical degradation studies and spectroscopic methods, especially 2D -N M R techniques, and confirmed by synthesis. Chryseomonin constitutes a novel type of catecholate siderophore. 
  Reference    Z. Naturforsch. 51c, 281 (1996); received January 22/February 9 1996 
  Published    1996 
  Keywords    Catecholate Siderophore, Chryseom onas luteola, Chrysobactin, Chryseomonin, Structure Elucidation 
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 TEI-XML for    default:Reihe_C/51/ZNC-1996-51c-0281.pdf 
 Identifier    ZNC-1996-51c-0281 
 Volume    51 
9Author    Thomas Fendert3, VictorW. Rayb, RobW M Van Soestc, Peter Proksch3Requires cookie*
 Title    Bromoisoxazoline Alkaloids from the Caribbean Sponge Aplysina insularis  
 Abstract    An investigation of a specimen of the Caribbean sponge A plysina insularis resulted in the isolation of fourteen bromoisoxazoline alkaloids (1 -1 4), of which 14-oxo-aerophobin-2 (1)* is a novel derivative. Structure elucidation of the compounds have been established from spectral studies and data for 1 are reported. Constituents 2 to 6 and 11 to 14 have not been identified sofar in A plysina insularis species. The presence of the known compounds 7 to 9 in A plysina insularis indicates that their use for chem otaxonom ical purposes is questionable. 
  Reference    Z. Naturforsch. 54c, 246 (1999); received D ecem ber 23 1998/January 22 1999 
  Published    1999 
  Keywords    Sponges, A plysina insularis, Bromoisoxazoline Alkaloids, Chemotaxonomy, Structure Elucidation 
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 TEI-XML for    default:Reihe_C/54/ZNC-1999-54c-0246.pdf 
 Identifier    ZNC-1999-54c-0246 
 Volume    54 
10Author    SiegmUnd Lang, H.Anna Beyer, P. Eter, Sistig, F. Ritz, W. Ag, N. ErRequires cookie*
 Title    A New Red Dipyrromethene Pigment from Candida boidinii  
 Abstract    The yeast Candida boidinii ATCC 32195 produces a cell-bound red pigment during growth on 1% ethanol in the presence o f 0.05% monofluoracetate. Its isolation and purification are described. The structure was elucidated by chemical degradation and physical m ethods, m ainly mass and nuclear magnetic resonance spectroscopy. 
  Reference    Z. Naturforsch. 38c, 7 (1983); received September 15/O ctober 28 1982 
  Published    1983 
  Keywords    Candida boidinii, Growth on Ethanol, Presence M onofluoracetate, Red Dipyrrom ethene Pigment, Structure Elucidation 
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 TEI-XML for    default:Reihe_C/38/ZNC-1983-38c-0007.pdf 
 Identifier    ZNC-1983-38c-0007 
 Volume    38