Volume 47; Issue 34

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Tetrahedron
Volume 47; Issue 34

Tetrahedron

Volume 47; Issue 34

1

Graphical abstracts

Journal:

Year:

1991

Language:

english

File:

PDF, 544 KB

english, 1991

2

The synthesis and properties of organized polyaza cavity-shaped molecules

Randolph P. Thummel

Journal:

Year:

1991

Language:

english

File:

PDF, 2.27 MB

english, 1991

3

NMR study of the effect of nitrogen-borane coordination on the conformational equilibrium of six membered ring heterocycles.

Angelina Flores-Parra, Norberto Farfán, Alberto I. Hernández-Bautista, Lilia Fernández-Sánchez, Rosalinda Contreras

Journal:

Year:

1991

Language:

english

File:

PDF, 761 KB

english, 1991

4

Boron analogues of phosphonoacetates: Synthesis, characterization and antitumor properties of sodium diethylphosphite-carboxyborane and related compounds

Anup Sood, Cynthia K. Sood, Iris H. Hall, B.F. Spielvogel

Journal:

Year:

1991

Language:

english

File:

PDF, 970 KB

english, 1991

5

Structure and conformation of ophiobolin K and 6- epiophiobolin K from Aspergillus ustus as a nematocidal agent.

Sheo B. Singh, Jack L. Smith, Glory S. Sabnis, Anne W. Dombrowski, James M. Schaeffer, Michael A. Goetz, Gerald F. Bills

Journal:

Year:

1991

Language:

english

File:

PDF, 579 KB

english, 1991

6

Formation, properties, and reactions of the 1,2:3,4:5,6-tris(bicyclo[2.2.2]octeno)tropylium ion

Koichi Komatsu, Hidekazu Akamatsu, Shuji Aonuma, Yasuhisa Jinbu, Naoko Maekawa, Ken'ichi Takeuchi

Journal:

Year:

1991

Language:

english

File:

PDF, 1.22 MB

english, 1991

7

New route to (−)-frontalin and (−)-malyngolide via epoxyketone rearrangement

Morio Asaoka, Satoshi Hayashibe, Syuzo Sonoda, Hisashi Takei

Journal:

Year:

1991

Language:

english

File:

PDF, 514 KB

english, 1991

8

Organoaluminum-catalyzed rearrangement of epoxides a facile route to the synthesis of optically active β-siloxy aldehydes

Keiji Maruoka, Takashi Ooi, Shigeru Nagahara, Hisashi Yamamoto

Journal:

Year:

1991

Language:

english

File:

PDF, 1.09 MB

english, 1991

9

Synthesis of both the enantiomers of methyl epijasmonate

Takeshi Kitahara, Tsunehiro Nishi, Kenji Mori

Journal:

Year:

1991

Language:

english

File:

PDF, 676 KB

english, 1991

10

New antitumor bicyclic hexapeptides, RA-VI and -VIII from rubia cordifolia ; Conformation-activity relationship II

Hideji Itokawa, Hiroshi Morita, Koichi Takeya, Nobuo Tomioka, Akiko Itai, Yoichi Iitaka

Journal:

Year:

1991

Language:

english

File:

PDF, 1.05 MB

english, 1991

11

Synthesis of (2R,3S)-3-[(benzyloxycarbonyl)oxy]-2-fluorotetradecanoic acid

Masao Shiozaki, Yoshiyuki Kobayashi, Masami Arai

Journal:

Year:

1991

Language:

english

File:

PDF, 552 KB

english, 1991

12

Synthese und stereochemie von neuen 2-substituierten 4-thiazolidinylessigsäuren

Jurgen Martens, Jürgen Kintscher, Wolfgang Arnold

Journal:

Year:

1991

File:

PDF, 575 KB

1991

13

Synthetic approaches to pentacyclic triterpenes of the arborane family

Simeon Arséniyadis, Ricardo Rodriguez, Eduardo Cabrera, Adrian Thompson, Guy Ourisson

Journal:

Year:

1991

Language:

english

File:

PDF, 925 KB

english, 1991

14

2α-Methylhopanoids: First recognition in the bacterium Methylobacterium organophilum and obtention via sulphur induced isomerization of 2β-methylhopanoids.: An account for their presence in sediments.

P. Stampf, D. Herrmann, P. Bisseret, M. Rohmer

Journal:

Year:

1991

Language:

english

File:

PDF, 743 KB

english, 1991

15

Fungal metabolites XXVI: The structure of saponaceolides B, C and D, new C-30 terpenoids from Tricholoma saponaceum

Maria De Bernardi, Luigi Garlaschelli, Lucio Toma, Giovanni Vidari, Paola Vita-Finzi

Journal:

Year:

1991

Language:

english

File:

PDF, 635 KB

english, 1991

16

1β-Methylthienamycin: Some stereocontrolled approaches towards the key intermediate

Mukund K Gurjar, Manjunath N Bhanu, Vivek B Khare, Ashok Bhandari, Madhusudhan N Deshmukh, A V Rama Rao

Journal:

Year:

1991

Language:

english

File:

PDF, 696 KB

english, 1991

17

New oxygenated sterols from the weed Eichhornia crassipes solms

Marina Della Greca, Pietro Monaco, Lucio Previtera

Journal:

Year:

1991

Language:

english

File:

PDF, 333 KB

english, 1991

18

Influence of the heterocyclic side ring during the Boulton-Katritzky rearrangement of 1,2-alkylenedioxy-nitrobenzofuroxans

Ioannis M. Takakis, Phaedon M. Hadjimihalakis, Georgia G. Tsantali

Journal:

Year:

1991

Language:

english

File:

PDF, 798 KB

english, 1991

19

Studies towards the synthesis of obtusenyne. A Claisen rearrangement approach to unsaturated nine-membered lactones.

Neil R. Curtis, Andrew B. Holmes, Mark G. Looney

Journal:

Year:

1991

Language:

english

File:

PDF, 561 KB

english, 1991

20

Functionalizations of the alkyl substituents in octa-alkylporphyrins

M.Graça H. Vicente, Kevin M. Smith

Journal:

Year:

1991

Language:

english

File:

PDF, 782 KB

english, 1991

21

The synthesis of new binucleating polyaza macrocyclic and macrobicyclic ligands: dioxygen affinities of the cobalt complexes

Dian Chen, Arthur E. Martell

Journal:

Year:

1991

Language:

english

File:

PDF, 441 KB

english, 1991

22

Biomimetic transalkylation of olefins via sulfonium salts

Marc Julia, Brian Mcdonald, Marcos Caroli Rezende

Journal:

Year:

1991

Language:

english

File:

PDF, 687 KB

english, 1991

23

Diacetone glucose architecture as a chirality template I. Crucial effects of the intramolecular oxygens upon the LiAlH4 reduction of the propargyl alcohol of 3-C-ethynyl-1,2:5,6-di-O-isopropylidene-α-D-allofuranose derivatives

Katsumi Kakinuma, Toshihiro Matsuzawa, Tadashi Eguchi

Journal:

Year:

1991

Language:

english

File:

PDF, 663 KB

english, 1991

24

Samarium diiodide promoted spirolactonization of cycloalkanones

RenĆsuk, Zhong Hua, Mohamed Abdou, Christoph Kratky

Journal:

Year:

1991

Language:

english

File:

PDF, 619 KB

english, 1991

25

A new route to precursors of ecdysteroids using a regio- and stereoselective hydroboration

Frédéric Dolle, Charles Hetru, Bang Luu

Journal:

Year:

1991

Language:

english

File:

PDF, 516 KB

english, 1991

26

Synthesis of a tritiated 3-dehydroecdysteroid putative precursor of ecdysteroid biosynthesis in Locusta migratoria

Frédéric Dolle, Charles Hetru, Jean-Pierre Roussel, Bernard Rousseau, Franck3 Sobrio, Bang Luu, Jules A. Hoffmann

Journal:

Year:

1991

Language:

english

File:

PDF, 913 KB

english, 1991

27

Decarboxylative radical addition to vinylsulphones and vinylphosphonium bromide: Some further novel transformations of geminal (pyridine-2-thiyl) phenylsulphones.

Derek H.R. Barton, Jean Boivin, Elisabeth Crépon (née da Silva), Jadab Sarma, Hideo Togo, Samir Z. Zaid

Journal:

Year:

1991

Language:

english

File:

PDF, 1.15 MB

english, 1991

28

Synthesis of tetrameric branched RNA-DNA conjugate & branched-RNA analogue & their comparative conformational studies by 500 MHz NMR spectroscopy

András Földesi, Peter Agback, Corin Glemarec, Chattopadhyaya Jyoti

Journal:

Year:

1991

Language:

english

File:

PDF, 1.39 MB

english, 1991

29

Phthalimidosulphenyl chloride. Part 2. Synthesis of unusual thiirane derivatives.

Giuseppe Capozzi, Luciano Gori, Stefano Menichetti

Journal:

Year:

1991

Language:

english

File:

PDF, 743 KB

english, 1991

30

A total synthesis of (−)-ruspolinone

Keith Jones, King-Chung Woo

Journal:

Year:

1991

Language:

english

File:

PDF, 456 KB

english, 1991