Volume 45; Issue 12

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Tetrahedron
Volume 45; Issue 12

Tetrahedron

Volume 45; Issue 12

1

17O NMR spectroscopy: Assessment of steric perturbation of structure in organic compounds

David W. Boykin, Alfons L. Baumstark

Journal:

Year:

1989

Language:

english

File:

PDF, 2.55 MB

english, 1989

2

Novel unsaturated purine nucleosides

Vasu Nair, Lyons Arthur G

Journal:

Year:

1989

Language:

english

File:

PDF, 529 KB

english, 1989

3

An AM1 Study of an α-Nucleophile: Geometries and Interconversion Modes of Oximate Anion Stereomers

S. Hoz, Buncel E

Journal:

Year:

1989

Language:

english

File:

PDF, 562 KB

english, 1989

4

Biogenesis-like transformation of salidroside to rengyol and its related cyclohexyletanoids of forsythia suspensa

Katsuya Endo, Kazuhiko Seya, Hiroshi Hikino

Journal:

Year:

1989

Language:

english

File:

PDF, 668 KB

english, 1989

5

Functionalized chloroenamines in aminocyclopropane synthesis III. synthesis and assignment of configuration of two isomeric morpholinobicyclo[3.1.0]hexane derivatives

Elmar Vilsmaier, Rainer Adam, Claus Tetzlaff, Regina Cronauer

Journal:

Year:

1989

Language:

english

File:

PDF, 776 KB

english, 1989

6

An approach to bufadienolides from deoxycholic acid. Reactions of a steroidal αβ-unsaturated aldehyde with some O-silylated ketene acetals

Hans-Wolfgang Hoppe, Blanda Stammen, Ulrich Werner, Hermannn Stein, Peter Welzel

Journal:

Year:

1989

Language:

english

File:

PDF, 1.05 MB

english, 1989

7

Introduction d'une fonction azotée en 14β du noyau stéroide. Application à la préparation d'une molécule cardioactive, le 14β-amino-5β-prégnane-3β,20β-diol, à partir de la progestérone et de l'acide désoxycholique

S.B. Adéoti, B. Charpentier, A. Montagnac, A. Chiaroni, C. Riche, M. Païs

Journal:

Year:

1989

File:

PDF, 1.20 MB

1989

8

A short and efficient degradation of the bile acid side chain. Some novel reactions of sulphines and α-ketoesters

Derek H.R. Barton, Jocelyne Wozniak, Samir Z. Zard

Journal:

Year:

1989

Language:

english

File:

PDF, 900 KB

english, 1989

9

Cyclization of 1,5-hexadien-3-ols. Obtention of chloro-octalines, octalones and hexahydro-azulenones from allyl-pulegols

Mostafa El Idrissi, Maurice Santelli

Journal:

Year:

1989

Language:

english

File:

PDF, 485 KB

english, 1989

10

Microbial transformations. 14. Regioselective hydroxylation of(1R)-caryolanol by aspergillus niger. A reexamination of the 13C NMR spectrum of caryolanol

V. Lamare, A. Archelas, R. Faure, M. Cesario, C. Pascard, R. Furstoss

Journal:

Year:

1989

Language:

english

File:

PDF, 492 KB

english, 1989

11

Biogenetic-type transformation of 3-keto-4,5-epoxy-eudesmanes: synthesis of cyperanes, eremophilanes and spirovetivanes

P. Ceccherelli, M. Curini, M.C. Marcotullio, O. Rosati

Journal:

Year:

1989

Language:

english

File:

PDF, 523 KB

english, 1989

12

Addition of aminoketene dithioacetals to α,β-unsaturated ketones. Synthesis and reactions of cyclohex-2-en-1,4-dione monodithioacetals

Philip C. Bulman Page, Shaun A Harkin, Allan P. Marchington, Monique B. van Niel

Journal:

Year:

1989

Language:

english

File:

PDF, 1.39 MB

english, 1989

13

A Total Synthesis of (±)-Zoapatanol and Demethyl-ORF13811

Philip J. Kocieński, Christopher J. Love, Whitby Richard J, Gerard Costello, David A. Roberts

Journal:

Year:

1989

Language:

english

File:

PDF, 1.16 MB

english, 1989

14

The synthesis of allylic phosphate derivatives of trans zeatin

Belal Shadid, Henk C. van der Plas, C.R. Vonk, E. Davelaar, S.A. Ribot

Journal:

Year:

1989

Language:

english

File:

PDF, 621 KB

english, 1989

15

New glycosphingolipids from marine organisms

S. Hirsch, Y. Kashman

Journal:

Year:

1989

Language:

english

File:

PDF, 648 KB

english, 1989

16

Preparation of piperidines from δ-chloroimines

Paul Sulmon, Norbert De Kimpe, Niceas Schamp

Journal:

Year:

1989

Language:

english

File:

PDF, 873 KB

english, 1989

17

3,4-Bismethylenecyclopentanone ethylene ketal: A useful diene for[6.5]ring systems: Application to a formal synthesis of gibberellic acid

Achille Barco, Simonetta Benetti, Alberto Casolari, Stefano Manfredini, Gian Piero Pollini, Eleonora Polo, Vinicio Zanirato

Journal:

Year:

1989

Language:

english

File:

PDF, 639 KB

english, 1989

18

The effect of metal ion complex formation on acidic depurination of 2′-deoxyadenosine and 2′-deoxyguanosine

Jorma Arpalahti, Rainer Käppi, Jari Hovinen, Harri Lönnberg, Jyoti Chattopadhyaya

Journal:

Year:

1989

Language:

english

File:

PDF, 590 KB

english, 1989

19

Influence of ph on the decomposition of N-chlorodiethanolamine

J.M. Antelo*, F. Arce, D. Casal, P. Rodriguez, A. Varela

Journal:

Year:

1989

Language:

english

File:

PDF, 654 KB

english, 1989

20

Carbon transfer reactions with heterocycles - V. A facile synthesis of nifedipine and analogues

Harjit Singh, Kamaljit Singh

Journal:

Year:

1989

Language:

english

File:

PDF, 481 KB

english, 1989

21

Stereoregulation of the C(12b)H-C(2)H relationship in the preparation of 2-substituted 1,2,3,4,6,7,12,12b-octahydro-indolo[2,3-a]quinolizines

Mauri Lounasmaa★, Reija Jokela

Journal:

Year:

1989

Language:

english

File:

PDF, 871 KB

english, 1989

22

Graphical abstracts

Journal:

Year:

1989

File:

PDF, 47 KB

1989

23

Another look at the photodechlorination of bromodan

Walter V. Turner, Siegmar Gäb

Journal:

Year:

1989

Language:

english

File:

PDF, 409 KB

english, 1989

24

Optically active five-membered oxygen-containing rings. A synthesis of (+)-eldanolide

Robert Bloch, Matar Seck

Journal:

Year:

1989

Language:

english

File:

PDF, 562 KB

english, 1989

25

Photochemical behaviour of 3.4-epoxyprecocene-I and related epoxychromans

G. Ariamala, K.K. Balasubramanian

Journal:

Year:

1989

Language:

english

File:

PDF, 344 KB

english, 1989

26

Studies on enamides Part-21:A novel photochemical synthesis of 9H-indolo [3,2,1-de] phenanthridin-9-one, a benzcanthine analogue

Somnath Ghosh, Diptendu Bhusan Datta, Indira Datta, Tapas Kumar Das

Journal:

Year:

1989

Language:

english

File:

PDF, 705 KB

english, 1989

27

Diethoxymethylphosphonites and phosphinates. Intermediates for thesynthesis of α,β- and X aminoalkylphosphonous acids

J.G. Dingwalla, J. Ehrenfreund, R.G. Hall

Journal:

Year:

1989

Language:

english

File:

PDF, 1.27 MB

english, 1989

28

X=Y-ZH compounds as potential 1,3-Dipoles. Part 231,2 mechanisms of the reactions of ninhydrin and phenalene trion with ∝-amino acids. X-ray crystal structure of protonated ruhemann's purple, a stable azomethine ylide

Ronald Grigg, John F. Malone, Theeravat Mongkolaussavaratana, Sunit Thianpatanagul

Journal:

Year:

1989

Language:

english

File:

PDF, 853 KB

english, 1989

29

Unprecedented alkaloid skeleton from the mediterranean sponge reniera sarai: X-ray structure of an acetate derivative of sarain-a

G. Cimino, C.A. Mattia, L. Mazzarella, R. Puliti, G. Scognamiglio, A. Spinella, E. Trivellone

Journal:

Year:

1989

Language:

english

File:

PDF, 697 KB

english, 1989

30

Clathridine and its zinc complex, novel metabolites from the marine sponge clathrina clathrus

Patrizia Ciminiello, Ernesto Fattorusso, Silvana Magno, Alfonso Mangoni

Journal:

Year:

1989

Language:

english

File:

PDF, 467 KB

english, 1989

31

Transformation of isogermacrone with lead tetraacetate. Formation of a new cyclononane skeleton

Valentin Enev, Elena Tsankova, Bozhana Mikhova

Journal:

Year:

1989

Language:

english

File:

PDF, 546 KB

english, 1989

32

Synthesis of the four dl-pairs of 2-amino-3-phenylnorbornane-2-carboxylic acids

A. Avenoza, C. Cativiela, J.A. Mayoral, M.A. Roy

Journal:

Year:

1989

Language:

english

File:

PDF, 645 KB

english, 1989