Works matching IS 0018019X AND DT 2001 AND VI 84 AND IP 4

Results: 22

Crystal Structure of a Cyclotetraicosaphenylene.

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 4, p. 778, doi. 10.1002/1522-2675(20010418)84:4<778::AID-HLCA778>3.0.CO;2-6

By:

Müller, Peter;
Usón, Isabel;
Hensel, Volker;
Schlüter, A. Dieter;
Sheldrick, George M.

Publication type:

Article

Facile, Asymmetric Addition of Acetylene to Aldehydes: In Situ Generation of Reactive Zinc Acetylide.

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 4, p. 964, doi. 10.1002/1522-2675(20010418)84:4<964::AID-HLCA964>3.0.CO;2-I

By:

Sasaki, Hiroshi;
Boyall, Dean;
Carreira, Erick M.

Publication type:

Article

Total Synthesis of (−)-Bauhinin.

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 4, p. 890, doi. 10.1002/1522-2675(20010418)84:4<890::AID-HLCA890>3.0.CO;2-Q

By:

Josien-Lefebvre, Delphine;
Desmares, Guillaume;
Drian, Claude Le

Publication type:

Article

New Insights into the Degradation of Qinghaosu (Artemisinin) Mediated by Non-Heme-Iron Chelates, and Their Relevance to the Antimalarial Mechanism.

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 4, p. 928, doi. 10.1002/1522-2675(20010418)84:4<928::AID-HLCA928>3.0.CO;2-I

By:

Wu, Yikang;
Yue, Zheng-Yu;
Liu, He-Hua

Publication type:

Article

Oligosaccharide Analogues of Polysaccharides, Part 21 , Towards New Cellulose I Mimics: Synthesis of Dialkynyl C-glucosides of peri-Substituted Anthraquinone.

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 4, p. 939, doi. 10.1002/1522-2675(20010418)84:4<939::AID-HLCA939>3.0.CO;2-A

By:

Murty, Kadiyala V. S. N.;
Vasella, Andrea

Publication type:

Article

Acetalization and Transacetalization Reactions Catalyzed by Ruthenium, Rhodium, and Iridium Complexes with {2-{{Bis[3-(trifluoromethyl)phenyl]phosphino}methyl}-2-methylpropane- 1,3-diyl}bis[bis[3-(trifluoromethyl)phenyl]phosphine] (MeC[CH2P( m-CF3C6H4)2]3)

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 4, p. 898, doi. 10.1002/1522-2675(20010418)84:4<898::AID-HLCA898>3.0.CO;2-V

By:

Sülü, Mustafa;
Venanzi, Luigi M.

Publication type:

Article

Geometry and Conformation of Thietanium Ions from Diffraction Data and Ab Initio Calculations.

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 4, p. 860, doi. 10.1002/1522-2675(20010418)84:4<860::AID-HLCA860>3.0.CO;2-1

By:

Destro, Riccardo;
Ortoleva, Emanuele;
Modena, Giorgio;
Pasquato, Lucia;
Lucchini, Vittorio

Publication type:

Article

Stereoselectivity in the Oligomerization of Racemic Tryptophan N-Carboxyanhydride (NCA-Trp) as Determined by Isotope Labeling and Mass Spectrometry.

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 4, p. 842, doi. 10.1002/1522-2675(20010418)84:4<842::AID-HLCA842>3.0.CO;2-1

By:

Blocher, Markus;
Hitz, Thomas;
Luisi, Pier Luigi

Publication type:

Article

Cyano-Bridged Aqua( N, N-Dimethylacetamide)(cyanoiron)lanthanides from Samarium, Gadolinium, or Holmium Nitrate and Potassium Hexacyanoferrate: Crystal Structures and Magnetochemistry.

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 4, p. 817, doi. 10.1002/1522-2675(20010418)84:4<817::AID-HLCA817>3.0.CO;2-U

By:

Yan, Bing;
Chen, Zhida

Publication type:

Article

Photoswitchable Tetraethynylethene-Dihydroazulene Chromophores.

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 4, p. 743, doi. 10.1002/1522-2675(20010418)84:4<743::AID-HLCA743>3.0.CO;2-1

By:

Gobbi, Luca;
Seiler, Paul;
Diederich, François;
Gramlich, Volker;
Boudon, Corinne;
Gisselbrecht, Jean-Paul;
Gross, Maurice

Publication type:

Article

Hoogianal, a β-Irone Precursor from Iris hoogiana Dykes (Iridaceae).

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 4, p. 933, doi. 10.1002/1522-2675(20010418)84:4<933::AID-HLCA933>3.0.CO;2-Y

By:

Marner, Franz-Josef;
Hanisch, Bernadette

Publication type:

Article

N-Isobutylamides and Butyrolactone from the Fruits of Zanthoxylum integrifoliolum.

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 4, p. 830, doi. 10.1002/1522-2675(20010418)84:4<830::AID-HLCA830>3.0.CO;2-D

By:

Tsai, Ian-Lih;
Lin, Wei-Yu;
Huang, Mei-Wen;
Chen, Tzu-Li;
Chen, Ih-Sheng

Publication type:

Article

A New Class of Heterobinuclear Complexes: Crystal Structure and Magnetism of Copper(II)-Nickel(II) Complexes Incorporating Two Different Macrocyclic Ligands.

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 4, p. 908, doi. 10.1002/1522-2675(20010418)84:4<908::AID-HLCA908>3.0.CO;2-Q

By:

Gao, En-Qing;
Tang, Jin-Kui;
Liao, Dai-Zheng;
Jiang, Zong-Hui;
Yan, Shi-Ping;
Wang, Geng-Lin

Publication type:

Article

Crystal Structure, Magnetic Exchange Interaction, and DFT Study of 2,2′-(1-Oxidopyridine-2,6-diyl)bis[4,5-dihydro-4,4,5,5-tetramethyl-3-oxido-1 H-imidazol-1-oxyl] Hydrate.

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 4, p. 834, doi. 10.1002/1522-2675(20010418)84:4<834::AID-HLCA834>3.0.CO;2-Y

By:

Zhang, Lei;
Liu, Zhi-Liang;
Weng, Lin-Hong;
Liao, Dai-Zheng;
Jiang, Zong-Hui;
Yan, Shi-Ping;
Shen, Pan-Wen;
Baumgarten, Martin

Publication type:

Article

Synthesis and Cytotoxic Activities of α-Methylidene- γ-butyrolactones Bearing a Quinolin-4(1 H)-one Moiety.

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 4, p. 874, doi. 10.1002/1522-2675(20010418)84:4<874::AID-HLCA874>3.0.CO;2-I

By:

Hsu, Shu-Lin;
Chen, Yeh-Long;
Tzeng, Cherng-Chyi;
Fang, Kuo-Chang;
Sheu, Jia-Yuh

Publication type:

Article

Investigations on the Reactivity of Fascaplysin, Part II, General Stability Considerations and Products Formed with Nucleophiles.

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 4, p. 867, doi. 10.1002/1522-2675(20010418)84:4<867::AID-HLCA867>3.0.CO;2-A

By:

Fretz, Heinz;
Ucci-Stoll, Katharina;
Hug, Paul;
Schoepfer, Joseph;
Lang, Marc

Publication type:

Article

ipso-Substitution Reaction in the Convergent Stepwise Synthesis of Calix[8]arene with Regioselectively Functionalized Upper Rim.

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 4, p. 849, doi. 10.1002/1522-2675(20010418)84:4<849::AID-HLCA849>3.0.CO;2-A

By:

Tsue, Hirohito;
Enyo, Kazutaka;
Hirao, Ken-ichi

Publication type:

Article

Synthetic Analogues of Naturally Occurring Spider Toxins: Synthesis of 2-(Hydroxyphenyl)propanamides of Spermidine and Spermine.

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 4, p. 797, doi. 10.1002/1522-2675(20010418)84:4<797::AID-HLCA797>3.0.CO;2-2

By:

Popaj, Kasim;
Guggisberg, Armin;
Hesse, Manfred

Publication type:

Article

A Novel 2 H-Azirin-3-amine as a Dipeptide (Aib-Hyp) Synthon.

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 4, p. 972, doi. 10.1002/1522-2675(20010418)84:4<972::AID-HLCA972>3.0.CO;2-M

By:

Breitenmoser, Roland A.;
Hirt, Thomas R.;
Luykx, Roeland T. N.;
Heimgartner, Heinz

Publication type:

Article

Selective Formation of β- D-Glucosides of Hindered Alcohols.

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 4, p. 880, doi. 10.1002/1522-2675(20010418)84:4<880::AID-HLCA880>3.0.CO;2-U

By:

Desmares, Guillaume;
Lefebvre, Delphine;
Renevret, Gilles;
Drian, Claude Le

Publication type:

Article

Identification of (6 R)-5,6,7,8-Tetrahydro- D-monapterin (=(6 R)-2-Amino-5,6,7,8-tetrahydro-6-[(1 R,2 R)-1,2,3 -trihydroxypropyl]pteridin-4(3 H)-one) as the Native Pteridine in Tetrahymena pyriformis.

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 4, p. 918, doi. 10.1002/1522-2675(20010418)84:4<918::AID-HLCA918>3.0.CO;2-M

By:

Sugimoto, Takashi;
Ikemoto, Kazuhisa;
Murata, Shizuaki;
Tazawa, Masahiro;
Nomura, Takahide;
Hagino, Yasumichi;
Ichinose, Hiroshi;
Nagatsu, Toshiharu

Publication type:

Article

Scope and Limitation of the Acid-Catalyzed Isomerization of Aib-Containing Thiopeptides.

Published in:

Helvetica Chimica Acta, 2001, v. 84, n. 4, p. 786, doi. 10.1002/1522-2675(20010418)84:4<786::AID-HLCA786>3.0.CO;2-A

By:

Breitenmoser, Roland A.;
Heimgartner, Heinz

Publication type:

Article