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1 3 C N M R Spectra of Trimethylene Oxide and Sulphide Jukka Jokisaari and Juha Kuonanoja Department of Physics, University of Oulu, 90100 Oulu 10, Finland and Anna-Maija Häkkinen Department of Medical Physics, University of Helsinki, 00170 Helsinki 17, Finland Z. Naturforsch. 33a, 7—10 (1978); received October 25, 1977 The 13C NMR spectra of trimethylene oxide and trimethylene sulphide have been recorded and analysed as second-order spectra. The values of all the C—H coupling constants with their signs are reported. The signs of the C—H coupling

Stoffwechselprodukte von Mikroorganismen, XXIX [1] 13C-NMR-Spektren hochsubstituierter Naturstoffe vom Phthalid-Typ Investigations on Metabolites of Microorganisms, XXIX [1] 13C NMR Spectra of Highly Substituted Natural Products of the Phthalide Type Hans Achenbach* und Andreas Mühlenfeld Institut für Pharmazie und Lebensmittelchemie, Lehrstuhl für Pharmazeutische Chemie, Universität Erlangen, D-8520 Erlangen Dieter Hunkler Institut für Organische Chemie und Biochemie, Universität Freiburg. D-7800 Freiburg Z. Naturforsch. 40b, 426 -428 (1985

1712 Notizen The 13C NMR Spectra of Organotransition Metal Complexes, I (Cyclododecatriene)- and (Bicycloheptene)nickel Complexes E . G . HOFFMANN, P . W . JOLLY, A . KÜSTERS, R . MYNOTT, a n d G . WILKE Max-Planck-Institut für Kohlenforschung, Mühlheim/Ruhr (Z. Naturforsch. 31b, 1712-1713 [1976]; received August 27, 1976) 1 3 C NMR, Nickel-olefin Complexes The 1 3 C NMR spectra of a number of nickel complexes of 1,5,9-cyclododecatriene and bicyclo-[2,2,l]-heptene have been studied and it has been shown that detailed struc- tural information can be

Molecular Determinants for Drug Receptor Interactions, 9 1H and 13C NMR Spectra of the Narcotic Antagonist N-Allyl-N-normetazocine by Two-Dimensional Chemical Shift Correlation Spectroscopy Bruno Perly and Patricia Le Bail-Richer CEN Saclay, DPC/SCM, F-91191 Gif-sur-Yvette, France Giuseppe C. Pappalardo* and Antonio Grassi Dipartimento di Scienze Chimiche, II Cattedra di Chimica G enerale, Facoltä di Farmacia, Universitä di Catania, Viale A. Doria 6, 1-95125 Catania, Italy Z. Naturforsch. 42b, 1021 — 1026 (1987); received December 18, 1986 Drug Receptor

13C-NMR-Spektroskopie an polycyclischen Aromaten, III1 Die 13C-NMR-Spektren von Amino- und Dimethylaminonaphthalinen 13C NMR Spectroscopy of Poly cyclic Arom atics, I I I 1 The 13C NMR Spectra of Amino- and D im ethylam inonaphthalenes L u d g e r E r n s t Gesellschaft für Molekularbiologische Forschung mbH, Braunschweig-Stöckheim (Z. Naturforsch. 30b, 794-799 [1975]; eingegangen am 1. April 1975) 13C NMR, Aminonaphthalenes, xH-coupled 13C NMR Spectra, Selective 13C{1H} Double Resonance The 13C NMR spectra of twelve amino-, dimethylamino-, diamino-, and bis

Bd. 37 (1983) H. 5 13C-NMR Spectra of Kraft Lignins 237 Holzforschung 37 (1983) 237-244 13C-NMR Spectra of Kraft Lignins1 By Knut P. Kringstad and Roland Mörck Swedish Forest Products Research Laboratory, Box 5604, S-11486 Stockholm, Sweden Keywords I3C-NMR spectroscopy Lignin Kraft pulping Chemical shifts Lignin model compounds Picea abies Schlüsselwörter (Sachgebiete) 13C-NMR Spektroskopie Lignin Sulfatkochung Chemische Verschiebungen Ligninmodellsubstanzen Fichtenholz !3CNMR Spectra of Kraft Lignins Summary Spruce (Picea abies) chips were pulped according to a

Nuclear Magnetic Resonance Studies on Aromatic Compounds, IV 13C NMR Spectra of Some Disulpho-substituted 1- and 2-Naphthols K a u k o R ä is ä n e n * and L a u r i H. J. L a j u n e n D epartm ent o f Physics*, D epartm ent o f Chemistry, U niversity o f Oulu, SF-90100 Oulu 10, Finland (Z. Naturforsch. 32 b, 818-820 [1977]; received March 22, 1977) 13C NMR, 1-Naphthols, 2-Naphthols The 13C NM R spectra of l-hydroxynaphthalene-3,6-disulphonic, 1-hydroxynaphthalene- 3,8-disulphonic, 2-hydroxynaphthalene-3,6-disulphonic, and 2-hydroxynaphthalene-6

654 NOTIZEN 13C NMR Spectra of Alkyl Substituted Pyrylium Salts A. T. B a l a b a n Institu tu l de Fizicä Atom icä, Cäsuta P ostalä Nr. 52C6, Bucuresti, Roumania V. W r a y Gesellschaft für Molekularbiologische Forschung mbH, Braunschweig (Z. Naturforsch. 30b, 654-655 [1975]; received March 13, 1975) 13C NMR, Alkylpyrylium Salts The 13C chem ical shifts of several alkyl - substituted pyrylium salts are presented. Charge densities in the isoelectronic series benzene, pyridine, pyridinium cation and pyrylium cation, calculated from INDO M. O. theory

- ethylene, is discussed on the basis of the 1 H and 13C NMR spectra. I m Laufe unserer Untersuchungen über die n- Komplexbildung „elektronenreicher" Olefine mit Übergangsmetallverbindungen1 '2 ergab sich das Problem, den Einfluß von Methoxy-Substituenten auf die Ladungsdichte und die Ladungsverteilung in einer C =C-Doppelbindung abzuschätzen. Wir haben daher die XH- und 1 3C-NMR-Spektren der methoxy-substituierten Äthylene aufgenommen und verglichen (Tab. I). In der Reihe Äthylen-Tetra- methoxyäthylen sind als Zwischenglieder das mono- substituierte und die 3

Vol. 45 (1991) No. 5 !H and I3C NMR Spectra of the Abietadienoic Resin Acids 341 Holzforschung 45(1991)341-346 The 1H and 13C NMR Spectra of the Abietadienoic Resin Acids By L.L. Landucci and D.F. Zinkel1) USDAForest Service, Forest Products Laboratory, One Gifford Pinchot Drive, Madison, WI 53705, U.S.A. Keywords Methyl palustrate Methyl levopimarate Methyl abietate Methyl neoabietate Rosin Diterpene 2DNMR DEPT NOE difference CH-correlation Summary The 13C and NMR Spectra of the methyl esters of the common diterpene abietadienoic resin acids were interpreted