Volume 35; Issue 2

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Tetrahedron Letters
Volume 35; Issue 2

Tetrahedron Letters

Volume 35; Issue 2

1

Graphical abstracts

Journal:

Tetrahedron Letters

Year:

1994

Language:

english

File:

PDF, 747 KB

english, 1994

2

Synthesis of secorapamycin esters and amides

Jerauld S. Skotnicki, Robert M. Kearney, Andri L. Smith

Journal:

Tetrahedron Letters

Year:

1994

Language:

english

File:

PDF, 258 KB

english, 1994

3

Ring expanded rapamycin derivatives

Jerauld S. Skotnicki, Robert M. Kearney

Journal:

Tetrahedron Letters

Year:

1994

Language:

english

File:

PDF, 167 KB

english, 1994

4

Cerium(III) chloride remarkably increases the rates of formation and yields of ketones in the reaction of lithium carboxylates with organolithiums

Yoonmo Ahn, Theodore Cohen

Journal:

Tetrahedron Letters

Year:

1994

Language:

english

File:

PDF, 479 KB

english, 1994

5

A novel synthesis of 2-substituted pyrido[1,2-a]-1,3,5-triazin-4-ones by the reaction of N-fluoropyridinium salts with cyanate ion and carbonitriles: Evidence in support of a carbene intermediate

Alexander S. Kiselyov, Lucjan Strekowski

Journal:

Tetrahedron Letters

Year:

1994

Language:

english

File:

PDF, 288 KB

english, 1994

6

Asymmetric induction in Pd catalyzed enyne cycloisomerizations

Barry M. Trost, Boris A. Czeskis

Journal:

Tetrahedron Letters

Year:

1994

Language:

english

File:

PDF, 363 KB

english, 1994

7

Remarkable enhancement of binding affinity of Heterocycle-modified DNA to DNA and RNA. Synthesis, characterization and biophysical evaluation of N2-imidazolylpropylguanine and N2-imidazolylpropyl-2-aminoadenine modified oligonucleotides

Kanda S. Ramasamy, Maryann Zounes, Carolyn Gonzalez, Susan M. Freier, Elena A. Lesnik, Lendell L. Cummins, Richard H. Griffey, Brett P. Monia, P. Dan Cook

Journal:

Tetrahedron Letters

Year:

1994

Language:

english

File:

PDF, 407 KB

english, 1994

8

A mild method for the conversion of activated aryl methyl groups to carboxaldehydes via the uncatalyzed periodate cleavage of enamines

Michael G. Vetelino, Jotham W. Coe

Journal:

Tetrahedron Letters

Year:

1994

Language:

english

File:

PDF, 226 KB

english, 1994

9

Unusual regiochemistry in the hydroboration of 3,3-dibenzylcycloalkenes

Xiaolian Shi, Bernard Miller

Journal:

Tetrahedron Letters

Year:

1994

Language:

english

File:

PDF, 224 KB

english, 1994

10

The enantioselective addition of dialkylphosphites to aldehydes: Catalysis by a lanthanum binaphthoxide complex

Nigam P. Rath, Christopher D. Spilling

Journal:

Tetrahedron Letters

Year:

1994

Language:

english

File:

PDF, 354 KB

english, 1994

11

Stereoselectivities of thermal and Lewis acid catalyzed Diels-Alder reactions of 1,2,2-trimethylpropyl acrylate with cyclopentadiene

Beatriz de Pascual-Teresa, K.N. Houk

Journal:

Tetrahedron Letters

Year:

1994

Language:

english

File:

PDF, 170 KB

english, 1994

12

Highly effective catalysts for the conjugate addition of silyl ketene acetals to enones (Mukaiyama-Michael reaction)

Valérie Berl, Günter Helmchen, Stephanie Preston

Journal:

Tetrahedron Letters

Year:

1994

Language:

english

File:

PDF, 330 KB

english, 1994

13

A versatile method for the synthesis of (S)- or (R)-cycloalkylglycines, (S)- or (R)-N-Heterocyclic and α,β-unsaturated N-heterocyclic α-amino acids

Régine Pauly, N.André Sasaki, Pierre Potier

Journal:

Tetrahedron Letters

Year:

1994

Language:

english

File:

PDF, 341 KB

english, 1994

14

Enantioselective synthesis of (2S,3S)- and (2R,3R)-pyrrolidine-2,3-dicarboxylic acids: Conformationally constrained (S)- and (R)-aspartic acid analogues

N.André Sasaki, Régine Pauly, Catherine Fontaine, Angèle Chiaroni, Claude Riche, Pierre Potier

Journal:

Tetrahedron Letters

Year:

1994

Language:

english

File:

PDF, 362 KB

english, 1994

15

Unstabilized 1-phosphaallenes : synthesis and characterization

Jean-Claude Guillemin, Tajdine Janati, Jean-Marc Denis, Pierre Guenot, Philippe Savignac

Journal:

Tetrahedron Letters

Year:

1994

Language:

english

File:

PDF, 334 KB

english, 1994

16

Iminyl radicals by stannane mediated cleavage of oxime esters

Jean Boivin, Anne-Marie Schiano, Samir Z. Zard

Journal:

Tetrahedron Letters

Year:

1994

Language:

english

File:

PDF, 301 KB

english, 1994

17

Dichloromethane as a source of the CH22-synthon: A combination of an arene-catalysed lithiation and a barbier-type reaction

Albert Guijarro, Miguel Yus

Journal:

Tetrahedron Letters

Year:

1994

Language:

english

File:

PDF, 403 KB

english, 1994

18

Molecular chiral recognition in supercritical solvents

Elemér Fogassy, Mária Ács, Timea Szili, Béla Simándi, János Sawinsky

Journal:

Tetrahedron Letters

Year:

1994

Language:

english

File:

PDF, 297 KB

english, 1994

19

Regio and stereochemistry in 2+2 intramolecular photocycloaddition of substituted olefins to cyclopentenones

D. Becker, N. Klimovich

Journal:

Tetrahedron Letters

Year:

1994

Language:

english

File:

PDF, 290 KB

english, 1994

20

Destabilized vinyl cations. An MO study of the influence of electron-withdrawing substituents

Yitzhak Apeloig, Rivka Biton, Han Zuilhof, Gerrit Lodder

Journal:

Tetrahedron Letters

Year:

1994

Language:

english

File:

PDF, 301 KB

english, 1994

21

4,5-Bis(methylene)-1,3-dithiole-2-ones from brominated 4,5-dimethyl-1,3-dithiole-2-ones: Precursors for tetramethylene-tetrathiafulvalenes

R.M. Renner, G.R. Burns

Journal:

Tetrahedron Letters

Year:

1994

Language:

english

File:

PDF, 402 KB

english, 1994

22

A novel and efficient synthesis of a tetra-substituted imidazole

Jerome F. Hayes, Michael B. Mitchell, Garry Procter

Journal:

Tetrahedron Letters

Year:

1994

Language:

english

File:

PDF, 212 KB

english, 1994

23

A short, flexible approach to vitamin D3 analogues with modified side chains

J. Pérez-Sestelo, J.L. Mascareñas, L. Castedo, A. Mouriño

Journal:

Tetrahedron Letters

Year:

1994

Language:

english

File:

PDF, 281 KB

english, 1994

24

Regioselective enzymatic epoxidation of (E)-(E)-piperylpiperidine

A Bhaskar Rao, M.Venkateswara Rao, Anil Kumar, G L David Krupadanam, G Srimannarayana

Journal:

Tetrahedron Letters

Year:

1994

Language:

english

File:

PDF, 152 KB

english, 1994

25

Competitive intramolecular aminolysis: Relative rates of 5- and 6-membered lactam ring closure

Kevin H. Patterson, Gary J. Depree, Johannes A. Zender, Peter J. Morris

Journal:

Tetrahedron Letters

Year:

1994

Language:

english

File:

PDF, 408 KB

english, 1994

26

Ligand effects on diastereoselective addition of organocerium reagents to aldehydes and cyclic ketones

Nicholas Greeves, Lisa Lyford, J.Elizabeth Pease

Journal:

Tetrahedron Letters

Year:

1994

Language:

english

File:

PDF, 389 KB

english, 1994

27

A new synthesis of Rhein

Peter T. Gallagher, Terry A. Hicks, Andrew P. Lightfoot, W.Martin Owton

Journal:

Tetrahedron Letters

Year:

1994

Language:

english

File:

PDF, 300 KB

english, 1994

28

Preparation of γ- and δ-lactams by ring closure of β,γ-unsaturated amides using trifluoromethanesulfonic acid

Charles M. Marson, Asad Fallah

Journal:

Tetrahedron Letters

Year:

1994

Language:

english

File:

PDF, 279 KB

english, 1994

29

The nature of electronic interactions governing the control of Π-facial selectivity in the capture of 5-substituted(X)-2-adamantyl radicals: Electrostatic versus hyperconjugative effects

William Adcock, Christopher I. Clark, Neil A. Trout

Journal:

Tetrahedron Letters

Year:

1994

Language:

english

File:

PDF, 321 KB

english, 1994

30

A new reaction of the azoxy group with alkyl thiolates: Reduction to amino via a sulfenamido intermediate

Maria Teresa Dario, Stefano Montanari, Cristina Paradisi, Gianfranco Scorrano

Journal:

Tetrahedron Letters

Year:

1994

Language:

english

File:

PDF, 178 KB

english, 1994

31

Oligodeoxynucleotides containing O2-alkylthymine: Synthesis and characterization

Yao-Zhong Xu, Peter F. Swann

Journal:

Tetrahedron Letters

Year:

1994

Language:

english

File:

PDF, 404 KB

english, 1994

32

Biosynthesis of tetronasin: Part 1 introduction and investigation of the diketide and triketide intermediates bound to the polyketide synthase

Helen C. Hailes, Catherine M. Jackson, Peter F. Leadlay, Steven V. Ley, James Staunton

Journal:

Tetrahedron Letters

Year:

1994

Language:

english

File:

PDF, 393 KB

english, 1994

33

Biosynthesis of tetronasin: Part 2 identification of the tetraketide intermediate attached to the polyketide synthase

Helen C. Hailes, Sandeep Handa, Peter F. Leadlay, Ian C. Lennon, Steven V. Ley, James Staunton

Journal:

Tetrahedron Letters

Year:

1994

Language:

english

File:

PDF, 402 KB

english, 1994

34

Biosynthesis of tetronasin: Part 3 preparation of deuterium labelled tri- and tetraketides as putative biosynthetic precursors of tetronasin

Helen C. Hailes, Sandeep Handa, Peter F. Leadlay, Ian C. Lennon, Steven V. Ley, James Staunton

Journal:

Tetrahedron Letters

Year:

1994

Language:

english

File:

PDF, 296 KB

english, 1994

35

Two new routes to the C19C26 tetrahydrofuran fragment of the acyl tetronic acid ionophore tetronasin (ICI M139603)

Geert-Jan Boons, Dearg S. Brown, J.Andrew Clase, Ian C. Lennon, Steven V. Ley

Journal:

Tetrahedron Letters

Year:

1994

Language:

english

File:

PDF, 302 KB

english, 1994

36

Novel polyene cyclisation routes to the acyl tetronic acid ionophore tetronasin (ICI M139603)

Geert-Jan Boons, Ian C. Lennon, Steven V. Ley, Elaine S.E. Owen, James Staunton, David J. Wadsworth

Journal:

Tetrahedron Letters

Year:

1994

Language:

english

File:

PDF, 341 KB

english, 1994

37

Avermectin biosynthesis. Intact incorporation of a diketide chain-assembly intermediate into the polyketide macrocyclic ring

Christopher J. Dutton, Antony M. Hooper, Peter F. Leadlay, James Staunton

Journal:

Tetrahedron Letters

Year:

1994

Language:

english

File:

PDF, 373 KB

english, 1994

38

Preparation of optically active cyclohexanediols and (+)-α- hydroxycycloheptanone by an enzyme catalysed stereoinversion/oxidation process

Andrew J. Carnell, Gilles Iacazio, Stanley M. Roberts, Andrew J. Willetts

Journal:

Tetrahedron Letters

Year:

1994

Language:

english

File:

PDF, 240 KB

english, 1994

39

Unprecedented formation of spirobicyclo[3.1.0]hexanes through tandem acetylene-addition - Michael cyclization

Arnold I.A. Broess, Marinus B. Groen, Hans Hamersma

Journal:

Tetrahedron Letters

Year:

1994

Language:

english

File:

PDF, 288 KB

english, 1994