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1Author    D. Dill, H. Eckau, H. BudzikiewiczRequires cookie*
 Title    Neuartige Cerebroside aus Cystobacter fuscus (Myxobacterales) [1] Novel Cerebrosides from Cystobacter fuscus (Myxobacterales) [1]  
 Abstract    From the cell material of Cystobacter fuscus (Myxobacterales) the cerebroside l-0-/3-D-galacto-pyranosyl-N-(2R-hydroxy-15-methylpalmitoyl)-17-methylsphinga-4E,8E-dienin (main compo­ nent) and three related compounds could be isolated, the structure elucidation of which is being reported here. 
  Reference    Z. Naturforsch. 40b, 1738—1746 (1985); eingegangen am 6. Mai 1985 
  Published    1985 
  Keywords    Cystobacter, Myxobacterales, Cerebrosides, Structure Elucidation 
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 TEI-XML for    default:Reihe_B/40/ZNB-1985-40b-1738.pdf 
 Identifier    ZNB-1985-40b-1738 
 Volume    40 
2Author    G. Falsone, F. Cateni, F. Katusian, H. Wagner, O. SeligmannRequires cookie*
 Title    Constituents of Euphorbiaceae, 10. Conun. [1] New Cerebrosides from Euphorbia characias L  
 Abstract    G . P ellizer and F. A sa r o D epartm ent o f Chemical Sciences, U niversity o f Trieste, V ia L. Giorgieri 1 Four new cerebrosides C -l-C -4 were isolated from the latex o f Euphorbia characias L. On the basis o f spectral evidences and chem ical reactions they were characterized as (2 S , 3 S , 4 R , 5 R , 6Z)-l-0-(/?-D -glu cop yran osyl)-2N -[(2'R)-2'-h yd roxy-(15'Z)-tetracose-noyl]-6(Z)-octadecene-l,3,4,5-tetraol-2-am ino (C -l), (2 S , 3 S , 4 R , 5 R, 6 Z)-l-0 -(/? -D -g lu co -p y ra n o sy l)-2 N -[(2 'R)-2 'h y d ro x y -(1 7 'Z)-h ex a c o sen o y l]-6 (Z)-o c ta d e c en e-l,3 ,4 ,5 -te tr a o l-2-am ino(C -2),(2S, 3S , 4 R , 5 R, 6Z)-l-0-(/3-D -glucopyranosyl)-2N -[(2'R)-2'-hydroxy-(19'Z)-octacosenoyl]-6-(Z)-octadecene-l,3,4,5-tetraol-2-am ino (C -3) and (2S , 3 S, 4 R , 5 R, 6 Z)-l-0 -(/?-D -glu cop yran o sy l)-2 N -[(2 'R)-2 '-h y d ro x y -o cta co sa n o y l]-6 -(Z)-o cta d ecen e-l, 3,4,5-tetraol-2-amino (C-4). Reversed phase colum n flash chromatography was effective for the isolation of the cere­ brosides. FA B -M S spectrometry, X H N M R , 13C N M R analysis and chemical reactions were useful in providing information for the structure elucidation. 
  Reference    Z. Naturforsch. 48b, 1121 (1993); received March 2 1 9 9 3 
  Published    1993 
  Keywords    Euphorbiaceae, C erebrosides, Structure Elucidation 
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 TEI-XML for    default:Reihe_B/48/ZNB-1993-48b-1121.pdf 
 Identifier    ZNB-1993-48b-1121 
 Volume    48 
3Author    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 
4Author    O. Tto, O. Lfb, Onowara Begum2, Hans GeigerbRequires cookie*
 Title    Fluorescence Properties of Hydroxy-and Methoxyflavones and the Effect of Shift Reagents  
 Abstract    The fluorescence spectra o f 42 hydroxy-and m ethoxyflavones in m ethanol solution have been investigated. The follow ing findings are considered to be useful in structure elucidation and identification o f flavonoids: (a) The maxima of the absorption and fluorescence bands give, in m ost cases, a unique combination; (b) flavones exhibit exceptionally large Stok es' shifts (6,800 to 
  Reference    Z. Naturforsch. 39b, 231 (1984); received Septem ber 23 1983 
  Published    1984 
  Keywords    Flavonoids, F luorescence, Structure Elucidation, Shift Reagents 
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 TEI-XML for    default:Reihe_B/39/ZNB-1984-39b-0231.pdf 
 Identifier    ZNB-1984-39b-0231 
 Volume    39 
5Author    Atta-Ur -Rahman, S. Farhi, G. A. Miana, Mehrun Nisa, H.E J, Wolfgang VoelterRequires cookie*
 Title    The Isolation and Structure of Papilamine, a New Alkaloid from Buxus papilosa  
 Abstract    A new alkaloid, papilamine, has been isolated from the leaves of Buxus papilosa to which the structure 1 has been assigned on the basis of chemi-cal and spectroscopic studies. 
  Reference    Z. Naturforsch. 40b, 567—568 (1985); received June 28 1984 
  Published    1985 
  Keywords    Steroidal Alkaloids, Buxus papilosa, Structure Elucidation, Febrifuge, Rheumatism 
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 TEI-XML for    default:Reihe_B/40/ZNB-1985-40b-0567_n.pdf 
 Identifier    ZNB-1985-40b-0567_n 
 Volume    40 
6Author    J. Stein, H. BudzikiewiczRequires cookie*
 Title    l-0-(13-Methyl-l-Z-tetradecenyl)-2-0-(13-methyItetradecanoyl)- glycero-3  
 Abstract    phospho-ethanolamin, ein Plasmalogen aus Myxococcus stipitatus [1] l-0-(13-M ethyl-l-Z-tetradecenyl)-2-0-(13-m ethyltetradecanoyl)-glycero-3-phospho-ethanolam ine, a Plasmalogen from M yxococcus stipitatus [1] The structure of l-0-(13-m ethyl-l-Z -tetradecenyl)-2-0-(13-m ethyltetradecanoyl)-glycero-3-phospho-ethanolamine isolated from Myxococcus stipitatus has been elucidated. 'H and 13C NMR as well as mass spectral data have been accum ulated which allow a ready identification and structure elucidation of compounds of this type. 
  Reference    Z. Naturforsch. 42b, 1017—1020 (1987); eingegangen am 25. März 1987 
  Published    1987 
  Keywords    Myxobacteria, Myxococcus stipitatus, Phospholipids, Plasmalogen, Structure Elucidation 
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 TEI-XML for    default:Reihe_B/42/ZNB-1987-42b-1017.pdf 
 Identifier    ZNB-1987-42b-1017 
 Volume    42 
7Author    G. M. Ohn, K. Taraz, H. Budzikiewicz, FrauM. Prof, BäudlerRequires cookie*
 Title    New Pyoverdin-Type Siderophores from Pseudomonas fluorescens [1]  
 Abstract    The structures o f two new pyoverdins (G M -I and G M -II) isolated from the culture medium of Pseudomonas fluorescens have been elucidated by spectroscopic methods and degradation studies. The pyoverdins consist o f a chrom ophore which could be identified as (1 S)-5-amino-2,3-dihydro-8,9-dihydroxy-1 H -pyrim ido[l,2-a]quinoline-l-carboxylic acid substituted at the amino group with a 3-carboxypropanoyl or a succinamoyl residue and at the carboxy group with the N-terminus o f D -A l a -D -L y s —G l y -G ly -D -t h r e o -(O H) A s p -D -G lu -D -S e r — L -A l a -D -A l a -D -A l a -L -A l a -L -N 5-(O H)O rn . According to the "short-hand" nomenclature proposed in [2]*** the two com pounds should be characterized as pyoverdin-Q-akG Gd'qsAaaAO '*-SUCA and pyoverdin-Q-akGG d'qsAaaAO '*-SUC. 
  Reference    Z. Naturforsch. 45b, 1437—1450 (1990); received April 26 1990 
  Published    1990 
  Keywords    Pseudomonas fluorescens, Pyoverdins, Siderophores, Structure Elucidation 
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 TEI-XML for    default:Reihe_B/45/ZNB-1990-45b-1437.pdf 
 Identifier    ZNB-1990-45b-1437 
 Volume    45 
8Author    Viqar Uddin, Ahmad, ZulfiqarA. Li3, Muhammad Shaiq, A. Li3, Fazila Iqbal3, Muhammad Zahid3, RasoolBakhsh Tareenb, H.E JRequires cookie*
 Title    Two New Aromatic Constituents from Stocksia brahuica  
 Abstract    The methanolic extract of Stocksia brahuica yielded two new aromatic constituents: diphe­ nylacetic acid and brahene (2',4'-dihydroxy-7-methoxy-4,5-methylenedioxyisoflavene). Their structures were characterized with the help of modern spectroscopic techniques including 2D-NMR. 
  Reference    Z. Naturforsch. 54b, 940—942 (1999); received January 2 1999 
  Published    1999 
  Keywords    Diphenylacetic Acid, Brahene, Sapindaceae, Stocksia brahuica, Structure Elucidation 
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 TEI-XML for    default:Reihe_B/54/ZNB-1999-54b-0940.pdf 
 Identifier    ZNB-1999-54b-0940 
 Volume    54 
9Author    Joachim Heinickea, Attila Dala, Hans-Friedrich Kleinb, Olaf Hetcheb, Ulrich Flörkec, Hans-Jürgen HauptcRequires cookie*
 Title    Formation of r71-P-(2-Phosphinophenol)Ni(0)(PMe3)3 and Oxidation to cjs/fraws-Bis(2-phosphinophenolato)nickel(II) Complexes  
 Abstract    o-Phosphinophenols 1 (P ^ O H) react with equimolar amounts of Ni(PMe3)4 at low tempera­ tures to give yellow Ni(0) complexes such as [(HO~P)Ni(PMe3)3] 2a with only P coordination of the P ^ O H ligand. Oxidation of solutions of 1 and Ni(PMe3)4 by dioxygen leads to brown bis(o-phosphinophenolato-P^O)nickel chelate complexes 3a-d. Structure elucidation by NM R is consistent with a m-square planar geometry for 3a-c and a rrans-square planar solution struc­ ture of the terr-butylphenylphosphino derivative 3d. The geometric isomers were distinguished by different ranges of phosphorus coordination shifts and 3lP-l3C-2 and 3IP-13C-1 coupling 
  Reference    Z. Naturforsch. 54b, 1235—1243 (1999); received May 19 1999 
  Published    1999 
  Keywords    Phosphinophenolate, Nickel, Complexes, Structure Elucidation, Solid State Structures 
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 TEI-XML for    default:Reihe_B/54/ZNB-1999-54b-1235.pdf 
 Identifier    ZNB-1999-54b-1235 
 Volume    54 
10Author    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 
11Author    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 
12Author    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 
13Author    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 
14Author    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 
15Author    H.E JRequires cookie*
 Title    A tta-ur-Rahm an*, M ehrun Nisa, and Talat Zamir  
 Abstract    A new alkaloid, "papilicine", has been isolated from the leaves of Buxus papilosa to which structure (1) has been assigned on the basis of spectroscopic studies. Buxus species have been used in the indigenous system of medicine as febrifuge, for relief of rheumatism and for the treatm ent of a num ber of other ailments. Buxus papilosa C. K. Schn., Linn. 
  Reference    (Z. Naturforsch. 39b, 127—128 [1984]; received March 23 1983) 
  Published    1984 
  Keywords    Buxus papilosa, Alkaloids, Structure Elucidation, NMR Spectra, Mass Spectra 
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 TEI-XML for    default:Reihe_B/39/ZNB-1984-39b-0127_n.pdf 
 Identifier    ZNB-1984-39b-0127_n 
 Volume    39 
16Author    Atta-Ur -Rahman, Mehrun Nisa, Talat Zamir, H.E J, Wolfgang VoelterRequires cookie*
 Title    The Isolation and Structure of "Papilinine" a New Alkaloid from Buxus papilosa  
 Abstract    A new alkaloid "Papilinine" has been isolated from the leaves of Buxus papilosa to which structure 1 has been assigned. 
  Reference    Z. Naturforsch. 40b, 565—566 (1985); received June 28 1984 
  Published    1985 
  Keywords    Buxus papilosa, Steroidal Alkaloids, Structure Elucidation, NMR Spectra, Mass Spectra 
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 TEI-XML for    default:Reihe_B/40/ZNB-1985-40b-0565_n.pdf 
 Identifier    ZNB-1985-40b-0565_n 
 Volume    40 
17Author    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 
18Author    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 
19Author    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 
20Author    M. Uhammad, Shaiq Ali, Muhammad Saleem, Viqar Uddin, H.E JRequires cookie*
 Title    Zatatriol: A New Aromatic Constituent from Zataria multiflora Ahm ad  
 Abstract    A new isopropyl benzene derivative named as zatatriol (5) and two synthetically known compounds (2 and 7) having the same skeleton have been isolated from the hexane soluble part of a Lamiaceous plant Zataria multiflora. In addition to 2, 5 and 7, som e known constitu­ ents: p-cym ene (1), thymol (3), thymol methyl-ether (4) , /3-sitosterol, stigmasterol, oleanolic acid, betulinic acid, and hexadecanoic acid have also been isolated from the same source. Structures of the isolated constituents were elucidated with the aid of NM R spectroscopy. 
  Reference    Z. Naturforsch. 54b, 807 (1999); received July 22 1998 
  Published    1999 
  Keywords    Lamiaceae, Zataria multiflora, Isopropyl Benzene Constituents, Structure Elucidation, N M R Data 
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 TEI-XML for    default:Reihe_B/54/ZNB-1999-54b-0807.pdf 
 Identifier    ZNB-1999-54b-0807 
 Volume    54