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ISOLIERUNG UND STRUKTURAUFKLAERUNG DES ALCALOIDS FUCHSISENECIONIN AUS SENECIO FUCHSII. = ISOLEMENT ET MISE EN EVIDENCE DE LA STRUCTURE DES ALCALOIDES FUCHSISENECIONINE DE S.FRODER E; WIEDENFELD H.1977; PHYTOCHEMISTRY; G.B.; DA. 1977; VOL. 16; NO 9; PP. 1462-1463; BIBL. 5 REF.Article

Zur Struktur des PyramidonR-Thioharnstoff-Komplexes in Lösung = Structure en solution du complexe aminophénazone-thiourée = On the solution structure of a complexe aminophenazone-thioureaWIEDENFELD, H.Archiv der Pharmazie (Weinheim). 1987, Vol 320, Num 3, pp 193-198, issn 0365-6233Article

DIE ABSOLUTE KONFIGURATION DES PYRROLIZIDINALKALOIDS 0-7-ANGELYLHELIOTRIDIN = CONFIGURATION ABSOLUE DE L'ALCALOIDE PYRROLIZIDINE 0-7-ANGELYLHELIOTRIDINEWIEDENFELD H; ROEDER E.1981; ARCH. PHARM. (WEINHEIM); ISSN 0365-6233; DEU; DA. 1981; VOL. 314; NO 9; PP. 737-740; ABS. ENG; BIBL. 8 REF.Article

13C-NMR DATEN DER STEREOISOMEREN ALKALOIDE AUS SYMPHYTUM OFFICINALE L = SPECTROMETRIE RMN AU 13C DES STEREOISOMERES DES ALCALOIDES DE S.O.L.RODER E; WIEDENFELD H; STENGL P et al.1982; ARCH. PHARM. (WEINHEIM); ISSN 0365-6233; DEU; DA. 1982; VOL. 315; NO 1; PP. 87-89; BIBL. 8 REF.Article

DAS PYRROLIZIDINALKALOID O7-ANGELYHELIOTRIDIN AUS SENECIO OVIRENSIS = L'ALCALOIDE PYRROLIZIDINIQUE O7-ANGELYHELIOTRIDINE DE S.O.ROEDER E; WIEDENFELD H; STENGL P et al.1980; PLANTA MED.; ISSN 0032-0943; DEU; DA. 1980; SUPPL.; PP. 182-184; ABS. ENG; BIBL. 7 REF.Article

ZUR SYNTHESE DER 5-HYDROXY-2,4-DIMETHYL-1-HEXEN-1,5-DICARBONSAEURE (NEMORENSINSAEURE) = SYNTHESE DE L'ACIDE HYDROXY-5 DIMETHYL-2,4 HEXENE-1 DICARBOXYLIQUE-1,5 (ACIDE NEMORENSINIQUE)ROEDER E; WIEDENFELD H; FRISSE M et al.1980; ARCH. PHARM. (WEINHEIM); ISSN 0365-6233; DEU; DA. 1980; VOL. 313; NO 9; PP. 803-806; ABS. ENG; BIBL. 5 REF.Article

ZUR FRAGE DER LOESUNGSVERMITTLUNG VON AMINOPHENAZON DURCH THIOHARNSTOFF = SUR LA SOLUBILISATION DE L'AMINOPHENAZONE PAR LA THIOUREEWIEDENFELD H; KIRFEL A; KOOP G et al.1982; ARCH. PHARM. (WEINHEIM); ISSN 0365-6233; DEU; DA. 1982; VOL. 315; NO 7; PP. 633-641; BIBL. 9 REF.Article

SYNTHESE VON RACEM. 5-HYDROXY-3,4-DIMETHYL-1-HEXEN-2,5-DICARBONSAEURE (SENECIVERNINSAEURE) = SYNTHESE D'ACIDE HYDROXY-5 DIMETHYL-3,4 HEXENE-1 DICARBOXYLIQUE-2,5 RACEMIQUE (ACIDE SENECIVERNIQUE)PASTEWKA U; WIEDENFELD H; ROEDER E et al.1980; ARCH. PHARM. (WEINHEIM); ISSN 0365-6233; DEU; DA. 1980; VOL. 313; NO 9; PP. 785-790; ABS. ENG; BIBL. 8 REF.Article

SYNTHESE VON RACEMISCHER TRANS-6-HYDROXY-5-METHYL-2-HEPTEN-3,6-DICARBONSAEURE (INTEGERRINECINSAEURE) = SYNTHESE DE L'ACIDE RACEMIQUE TRANS-HYDROXY-6 METHYL-5 HEPTENE-2 DICARBOXYLIQUE-3,6 (ACIDE INTEGERRINECIQUE)PASTEWKA U; WIEDENFELD H; ROEDER E et al.1980; ARCH. PHARM. (WEINHEIM); DEU; DA. 1980; VOL. 313; NO 10; PP. 846-850; ABS. ENG; BIBL. 11 REF.Article

PYRROLIZIDINALKALOIDE AUS SENECIO VERNALIS = ALCALOIDE DERIVE DE LA PYRROLIZIDINE CHEZ S.V.RODER E; WIEDENFELD H; PASTEWKA U et al.1979; PLANTA MED.; DEU; DA. 1979; VOL. 37; NO 2; PP. 131-136; ABS. ENG; BIBL. 5 REF.Article

DIE PYRROLIZIDINALKALOIDE SENECIONIN UND RETRORSIN AUS SENECIO INAEQUIDENS = ALCALOIDES PYRROLIZIDINIQUES SENECIONINE ET RETRORSINE DE S. I.ROEDER E; WIEDENFELD H; STENGL P et al.1981; PLANTA MED.; ISSN 0032-0943; DEU; DA. 1981; VOL. 41; NO 4; PP. 412-413; BIBL. 5 REF.Article

TUSSILAGIN-EIN NEUES PYRROLIZIDINALKALOID AUS TUSSILAGO FARFARA = TUSSILAGINE; UN NOUVEL ALCALOIDE PYRROLIZIDINIQUE DE T.F.RODER E; WIEDENFELD H; JOST EJ et al.1981; PLANTA MED.; ISSN 0032-0943; DEU; DA. 1981; VOL. 43; NO 1; PP. 99-102; ABS. ENG; BIBL. 8 REF.Article

Shikonin derivatives from Lithospermum canescensPIETROSIUK, A; WIEDENFELD, H.Pharmaceutical biology. 2005, Vol 43, Num 2, pp 189-191, issn 1388-0209, 3 p.Article

DIE ABSOLUTE KONFIGURATION DES PYRROLIZIDIN-ALKALOIDS TUSSILAGIN = CONFIGURATION ABSOLUE DE L'ALCALOIDE PYRROLIZIDINIQUE TUSSILAGINEWIEDENFELD H; RODER E; KIRFEL A et al.1983; ARCHIV DER PHARMAZIE (WEINHEIM); ISSN 0365-6233; DEU; DA. 1983; VOL. 316; NO 4; PP. 367-371; ABS. ENG; BIBL. 9 REF.Article

(1AR,6BR,10R,11R)-9,15-DIOXO-10-HYDROXY-10,11,13-TRIMETHYL-1A,2,3,6B-T ETRAHYDRO-5H-PYRROLIZINO-(1A,6B,6A-B,C)-1,8-DIOXA-15-CIS-TRIDECENE, C18H25NO5KIRFEL A; WILL G; WIEDENFELD H et al.1980; CRYST. STRUCT. COMMUNIC.; ITA; DA. 1980; VOL. 9; NO 2; PP. 353-361; BIBL. 5 REF.Article

(2S,4R,5R)-2-CARBOXYMETHYL-5-CARBOXY-2,4,5-TRIMETHYL-2,3,4,5-TETRAHYDR OFURANE, C10H16O5KIRFEL A; WILL G; WIEDENFELD H et al.1980; CRYST. STRUCT. COMMUNIC.; ITA; DA. 1980; VOL. 9; NO 2; PP. 363-369; BIBL. 6 REF.Article

Harnstoffkomplexe mit Dicarbonsäuren. I : Die Struktur von Bernsteinsäure-Harnstoff = Urea compound with dicarboxylic acid. I: Communication: the structure of succinic acid-ureaWIEDENFELD, H; KNOCH, F.Acta crystallographica. Section C, Crystal structure communications. 1990, Vol 46, Num 6, pp 1038-1040, issn 0108-2701Article

Zur Kristallstruktur des Theophyllin-Harnstoff-Komplexes = Structure cristalline du complexe théophylline-urée = The crystal structure of the theophylline-Urea complexWIEDENFELD, H; KNOCH, F.Archiv der Pharmazie (Weinheim). 1986, Vol 319, Num 7, pp 654-659, issn 0365-6233Article

ZUR GASCHROMATOGRAPHISCHEN BESTIMMUNG DER PYRROLIZIDENALKALOIDE AUS EINIGEN SENECIOARTEN = SUR LE DOSAGE PAR CHROMATOGRAPHIE EN PHASE GAZEUSE DES ALCALOIDES DERIVES DE LA PYRRAZOLINE DE QUELQUES ESPECES DE S.WIEDENFELD H; PASTEWKA U; STENGL P et al.1981; PLANTA MED.; ISSN 0032-0943; DEU; DA. 1981; VOL. 41; NO 2; PP. 124-128; ABS. ENG; BIBL. 13 REF.Article

Plants containing pyrrolizidine alkaloids: toxicity and problemsWIEDENFELD, H.Food additives & contaminants. Part A. Chemistry, analysis, control, exposure & risk assessment (Print). 2011, Vol 28, Num 3, pp 282-292, issn 1944-0049, 11 p.Article

Die Struktur des Diphenhydramin-Thioharnstoff-Komplexes = Structure du complexe diphénhydramine-thiourée = Structure of diphenhydramine-thioureaWIEDENFELD, H; KNOCH, F.Acta crystallographica. Section C, Crystal structure communications. 1987, Vol 43, Num 7, pp 1359-1362, issn 0108-2701Article

Pyrrolizidine alkaloids from Critonia morifoliaWIEDENFELD, H; ANDRADE CETTO, A.Phytochemistry. 1998, Vol 49, Num 5, pp 1463-1465, issn 0031-9422Conference Paper

DIE ABSOLUTE KONFIGURATION DES PYRROLIZIDINALKALOIDS PLATYPHYLLIN = CONFIGURATION ABSOLUE DE L'ALCALOIDE PYRROLIZIDINE PLATYPHYLLINEWIEDENFELD H; ROEDER E; KIRFEL A et al.1982; ARCH. PHARM. (WEINHEIM); ISSN 0365-6233; DEU; DA. 1982; VOL. 315; NO 2; PP. 165-169; ABS. ENG; BIBL. 12 REF.Article

Pyrrolizidine alkaloids from Ageratum conyzoidesWIEDENFELD, H; RÖDER, E.Planta medica. 1991, Vol 57, Num 6, pp 578-579, issn 0032-0943Article

Crystal structure of ioline dihydrochloride, (CH3)NH2(C7H10(NH)O)Cl2KNOCH, F; WIEDENFELD, H; ROEDER, E et al.Zeitschrift für Kristallographie. 1993, Vol 205, Num 2, pp 346-347, issn 0044-2968Article

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