Search Results - "GIESA, Sabine"
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Influence of biotransformation of luteolin, luteolin 7-O-glucoside, 3',4'-dihydroxyflavone and apigenin by cultured rat hepatocytes on antioxidative capacity and inhibition of EGF receptor tyrosine kinase activity
Published in Planta medica (01-06-2006)“…Flavonoids are known as biologically active compounds. Although this has been shown by several in vivo studies, it is still elusive whether their metabolites…”
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2
Tetrafunctional Photoaffinity Labels Based on Nakanishi'sm-Nitroalkoxy-Substituted Phenyltrifluoromethyldiazirine
Published in Angewandte Chemie International Edition (03-07-2002)Get full text
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3
Synthesis of a complex disaccharide precursor of phosphonate analogues of the antibiotic moenomycin A12
Published in Tetrahedron (14-10-2002)Get full text
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4
Moenomycin analogues with modified lipid side chains from indium-mediated Barbier-type reactions
Published in Tetrahedron (07-05-2001)“…From moenomycin A both the chromophore part and the lipid side chain were degraded by ozonolysis to give an analogue with a glycolaldehyde unit in 2-position…”
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5
Preparation and characterisation of C119
Published in Chemical physics letters (28-03-1997)“…Thermolysis of C120O at 550–600°C yielded a soluble product fraction containing C60, C119 and higher-mass species. Using a two-step HPLC procedure two species,…”
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6
Synthesis of Methyl (R)-2-O-Propargylglycerate, a Precursor to Analogues of the 2-O-Alkylglycerate Part of the Moenomycins
Published in European journal of organic chemistry (01-07-2003)“…Conditions allowing optically active methyl glycerate to be converted, without racemization, into the 2‐O‐propargyl derivative, via the 2‐O‐allyl derivative,…”
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7
Negative-ion low-temperature fast-atom bombardment mass spectrometry of monomeric and dimeric [60]fullerene compounds
Published in Rapid communications in mass spectrometry (15-05-1999)“…Negative‐ion low‐temperature fast‐atom bombardment mass spectrometry (LT‐FAB‐MS) is applied to monomeric and dimeric [60]fullerene compounds. LT‐FAB mass…”
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Studies on the interaction of the antibiotic moenomycin A with the enzyme Penicillin-binding protein 1b
Published in Bioorganic & medicinal chemistry (03-07-2003)“…The interaction of a moenomycin derivative with the enzyme penicillin binding protein 1b (PBP 1b) has been studied by means of STD NMR. The results obtained…”
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Studies on the Synthesis of Trisaccharide Analogues of the Antibiotic Moenomycin A
Published in Helvetica chimica acta (01-07-2004)“…A new approach for the synthesis of moenomycin trisaccharide analogues is reported in which three monosaccharide building blocks are used and allows the…”
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10
Moenomycin analogues with long-chain amine lipid parts from reductive aminations
Published in Tetrahedron (07-05-2001)“…From a moenomycin A glycolic aldehyde degradation product lacking the chromophore unit and most of the lipid part, a number of amines were prepared by…”
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11
Synthesis of Fluorescent Derivatives of the Antibiotic Moenomycin A
Published in European journal of organic chemistry (01-04-2002)“…Moenomycin has been highly selectively converted into amino derivative 3b. The primary amino group of this compound can be used to attach various fluorescent…”
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12
Synthesis of a building block for phosphonate analogues of moenomycin A12 from d-tartaric acid
Published in Tetrahedron (12-11-2001)Get full text
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13
A cross metathesis-based synthesis of analogues of the 2- O-alkyl glycerate part of the moenomycins
Published in Tetrahedron (26-11-2001)“…Conditions are reported which allow to convert optically active methyl glycerate to the 2- O-allyl derivative without racemization. Cross metathesis reactions…”
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14
Synthesis of analogues of the 2- O-alkyl glycerate part of the moenomycins
Published in Tetrahedron (14-01-2002)“…The title compounds have been prepared by hydroxymethylation of chiral enolates The title compounds have been prepared by hydroxymethylation of chiral enolates…”
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15
Synthesis of a complex disaccharide precursor of phosphonate analogues of the antibiotic moenomycin A 12
Published in Tetrahedron (2002)“…An approach for the synthesis of moenomycin A 12 C-glycoside partial structures is reported. An approach for the synthesis of moenomycin A 12 C-glycoside…”
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16
On Penicillin-Binding Protein 1b Affinity-Labeling Reagents
Published in Helvetica chimica acta (01-12-2003)“…The synthesis of some 3‐aryl‐3‐(trifluoromethyl)3H‐diazirine and benzophenone‐based photoaffinity labels is reported. The photolabile group is bound to a…”
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Studies on the Synthesis of Di- and Trisaccharide Analogues of Moenomycin A. Modifications in Unit E and in the Lipid Part
Published in Helvetica chimica acta (01-07-2004)“…Routes allowing the synthesis of moenomycin analogues with one modified sugar component and with new lipid parts were developed (see 10c, 12c, 16b, and 20b in…”
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18
Synthesis of a building block for phosphonate analogues of moenomycin A 12 from d-tartaric acid
Published in Tetrahedron (2001)“…An approach for the synthesis of moenomycin A 12 C-glycoside partial structures is reported based on allyltin chemistry. An approach for the synthesis of…”
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19
Tetrafunctional Photoaffinity Labels Based on Nakanishi's m-Nitroalkoxy-Substituted Phenyltrifluoromethyldiazirine
Published in Angewandte Chemie International Edition (03-07-2002)“…Two generally applicable reagents for photoaffinity probes have been developed. They contain an m‐nitrophenyl ether function with a trifluoromethyldiazirine…”
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20
A Method for the Introduction of Reporter Groups into Moenomycin A, Based on Thiouronium Salt Chemistry
Published in European journal of organic chemistry (01-04-2002)“…p‐Alkoxy‐substituted cinnamylthiouronium salts 7, 13, 21a, and 21b reacted selectively with the 2‐acylamino‐1,3‐cyclopentanedione unit A of moenomycin A (1) to…”
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