Volume 49; Issue 38

Main
Tetrahedron
Volume 49; Issue 38

Tetrahedron

Volume 49; Issue 38

1

Biosynthesis of brevianamides A and B: in search of the biosynthetic diels-alder construction

Juan F. Sanz-Cervera, Tomasz Glinka, Robert M. Williams

Journal:

Year:

1993

Language:

english

File:

PDF, 1.05 MB

english, 1993

2

Lithium carbenoids induced ring enlargement of silacyclobutane into 2-halo-1-silacyclopentane and its use in organic synthesis

Kozo Matsumoto, Yoshitaka Aoki, Koichiro Oshima, Kiitiro Utimoto, Noorsaadah Abd. Rahman

Journal:

Year:

1993

Language:

english

File:

PDF, 1.18 MB

english, 1993

3

A convenient route to β-aryl-substituted cyclic enamines as key synthetic intermediates of sceletium and amaryllidaceae alkaloids

Yoshihiro Matsumura, Jun Terauchi, Takashi Yamamoto, Takashi Konno, Tatsuya Shono

Journal:

Year:

1993

Language:

english

File:

PDF, 611 KB

english, 1993

4

Nucleosides and nucleotides. 120. Stereoselective radical deoxygenation of tert-alcohols in the sugar moiety of nucleosides: synthesis of 2′,3′-dideoxy-2′-C-methyl- -2′-C-ethynyl-β-d-threo-pentofuranosyl pyrimidines and adenine as potential antiviral and antitumor agents

Akio Kakefuda, Yuichi Yoshimura, Takuma Sasaki, Akira Matsuda

Journal:

Year:

1993

Language:

english

File:

PDF, 1.17 MB

english, 1993

5

l-Menthyl (R)-2-phenyl-4-oxo-1,3-dioxine-2-carboxylate: diastereofacial selectivity for conjugate addition and its explanation

Masayuki Sato, Masayuki Murakami, Chikara Kaneko, Toshio Furuya

Journal:

Year:

1993

Language:

english

File:

PDF, 793 KB

english, 1993

6

A carbohydrate approach to polyol fragments of amphotericin and the trienomycin- and mycotrienin antibiotics

Alois Fürstner, Judith Baumgartner

Journal:

Year:

1993

Language:

english

File:

PDF, 1.66 MB

english, 1993

7

First direct NMR spectroscopic observation of a cram-chelate involving a chiral α-alkoxy aldehyde

Manfred T. Reetz, Burkhard Raguse, Thomas Seitz

Journal:

Year:

1993

Language:

english

File:

PDF, 518 KB

english, 1993

8

Synthesis and electrochemical investigation of β-alkyloxy substituted meso-tetraphenylporphyrins

Hermann K. Hombrecher, Viviana M. Gherdan, Stefan Ohm, José A.S. Cavaleiro, Maria da Graça, P.M.S. Neves, Maria de Fátima Condesso

Journal:

Year:

1993

Language:

english

File:

PDF, 645 KB

english, 1993

9

Synthesis and structure determination of the first 1′-C-cyano-β-D-nucleosides

Valérie Uteza, Guo-Rong Chen, Jérémie Le Quan Tuoi, Gérard Descotes, Bernard Fenet, Annie Grouiller

Journal:

Year:

1993

Language:

english

File:

PDF, 683 KB

english, 1993

10

Inhibition of Ecdysone Biosynthesis : preparation of acetylenic intermediates

Mauvais Antony, Hetru Charles, Roussel Jean Pierre, Luu Bang1*

Journal:

Year:

1993

Language:

english

File:

PDF, 577 KB

english, 1993

11

Synthesis of cyclic α-hydrazino acid derivatives via N-acylhydrazonium ions

Floris P.J.T. Rutjes, N. Miranda Teerhuis, Henk Hiemstra, W. Nico Speckamp

Journal:

Year:

1993

Language:

english

File:

PDF, 2.09 MB

english, 1993

12

Cylindricines A and B, novel alkaloids from the ascidian clavelina cylindrica

Adrian J. Blackman, Caiping Li, David C.R. Hockless, Brian W. Skelton, Allan H. White

Journal:

Year:

1993

Language:

english

File:

PDF, 676 KB

english, 1993

13

Three new potent cytotoxic macrolides closely related to sphinxolide from the new caledonian sponge neosiphonia superstes

M.Valeria D'Auria, Luigi Gomez Paloma, Luigi Minale, Angela Zampella, Jean-Francois Verbist, Christos Roussakis, Cécile Debitus

Journal:

Year:

1993

Language:

english

File:

PDF, 546 KB

english, 1993

14

X = Y - ZH systems as potential 1,3-dipoles. Part 40. Chiral azomethine ylides from homochiral cyclic α-amino esters. Unusual regiospecific deprotonation of iminium ions.

Ronald Grigg, Zoran Rankovic, Mark Thornton-Pett, Anoma Somasunderam

Journal:

Year:

1993

Language:

english

File:

PDF, 901 KB

english, 1993

15

Reaction of phosphonium ylides with 4-triphenylmethyl-1,2-benzoquinone

Fayez H. Osman, Naglaa M. Abd El-Rahman, Fatma A. El-Samahy

Journal:

Year:

1993

Language:

english

File:

PDF, 918 KB

english, 1993

16

Graphical Abstract

Journal:

Year:

1993

File:

PDF, 378 KB

1993

17

Makaluvamine G, a cytotoxic pigment from an an Indonesian Sponge Histodermella sp.

John R. Carney, Paul J. Scheuer, Michelle Kelly-Borges

Journal:

Year:

1993

Language:

english

File:

PDF, 296 KB

english, 1993

18

Stereospecific pictet-spengler reaction: synthesis of cis (+)-(1S, 12bR)-1-aminoindoloquinolizidine from a pure α-(S)-aminoaldehyde derivative

Patricia Melnyk, Pierre Ducrot, Claude Thal

Journal:

Year:

1993

Language:

english

File:

PDF, 467 KB

english, 1993

19

Electrostatic effects in 1,3-dipolar cycloaddition reactions to chiral allyl ethers: a rationale for the experimentally observed diastereoselectivities

Rita Annunziata, Maurizio Benaglia, Mauro Cinquini, Laura Raimondi

Journal:

Year:

1993

Language:

english

File:

PDF, 607 KB

english, 1993

20

Synthesis of 4-C-hydroxymethyl hexopyranosyl nucleosides as potential inhibitors of HIV

Magnus Björsne, Björn Classon, ngemar Kvarnström, Bertil Samuelsson

Journal:

Year:

1993

Language:

english

File:

PDF, 640 KB

english, 1993

21

Stereoselective reactions of lithium enolates derived from N-BOC protected pyroglutamic esters

Jesús Ezquerra, Concepción Pedregal, Almudena Rubio, Belén Yruretagoyena, Ana Escribano, Francisco Sánchez-Ferrando

Journal:

Year:

1993

Language:

english

File:

PDF, 1017 KB

english, 1993