Volume 88; Issue 5

Main
Helvetica Chimica Acta
Volume 88; Issue 5

Helvetica Chimica Acta

Volume 88; Issue 5

1

Hyrtiosins A–E, Five New Scalarane Sesterterpenes from the South China Sea Sponge Hyrtios erecta

Zhi-Guo Yu, Kai-Shun Bi, Yue-Wei Guo

Journal:

Helvetica Chimica Acta

Year:

2005

Language:

english

File:

PDF, 178 KB

english, 2005

2

Asymmetric 1,3-Dipolar Cycloadditions of 2-Diazocyclohexane-1,3-diones and Alkyl Diazopyruvates

Paul Müller, Sabrina Chappellet

Journal:

Helvetica Chimica Acta

Year:

2005

Language:

english

File:

PDF, 234 KB

english, 2005

3

Facile and Sensitive Spectrophotometric Determination of Propoxur in Formulations and Environmental Samples

Kailasa Suresh Kumar, Kanchi Suvardhan, Dasari Rekha, B. Jayaraj, Pattium Chiranjeevi

Journal:

Helvetica Chimica Acta

Year:

2005

Language:

english

File:

PDF, 163 KB

english, 2005

4

Sarcophytonolides A–D, Four New Cembranolides from the Hainan Soft Coral Sarcophyton sp.

Rui Jia, Yue-Wei Guo, Ernesto Mollo, Guido Cimino

Journal:

Helvetica Chimica Acta

Year:

2005

Language:

english

File:

PDF, 177 KB

english, 2005

5

Cuparene-Derived Sesquiterpenes from the Chinese Red Alga Laurencia okamurai Yamada

Shui-Chun Mao, Yue-Wei Guo

Journal:

Helvetica Chimica Acta

Year:

2005

Language:

english

File:

PDF, 152 KB

english, 2005

6

Use of Dibutyl[14C]formamide as a Formylating Reagent in the Vilsmeier–Haack Reaction and Synthesis of a 14C-Labeled Novel Phosphodiesterase-4 (PDE-4) Inhibitor

Jonathan Z. Ho, Charles S. Elmore, Michael A. Wallace, Dan Yao, Matthew P. Braun, Dennis C. Dean, David G. Melillo, Cheng-yi Chen

Journal:

Helvetica Chimica Acta

Year:

2005

Language:

english

File:

PDF, 204 KB

english, 2005

7

Novel, Complex Flavonoids from Mallotus philippensis (Kamala Tree)

Miyuki Furusawa, Yoshimi Ido, Toshiyuki Tanaka, Tetsuro Ito, Ken-ichi Nakaya, Iliya Ibrahim, Masayoshi Ohyama, Munekazu Iinuma, Yoshiaki Shirataka, Yoshikazu Takahashi

Journal:

Helvetica Chimica Acta

Year:

2005

Language:

english

File:

PDF, 225 KB

english, 2005

8

New Iridoid Triesters from Valeriana jatamansi

Lili Yu, Rong Huang, Changri Han, Yuping Lv, Yong Zhao, Yegao Chen

Journal:

Helvetica Chimica Acta

Year:

2005

Language:

english

File:

PDF, 151 KB

english, 2005

9

Chromium-Mediated Dearomatization: Application to the Synthesis of Racemic 15-Acetoxytubipofuran and Asymmetric Synthesis of Both Enantiomers

E. Peter Kündig, Mundruppady S. Laxmisha, Rita Cannas, Sylvie Tchertchian, Liu Ronggang

Journal:

Helvetica Chimica Acta

Year:

2005

Language:

english

File:

PDF, 301 KB

english, 2005

10

Diterpenoid Alkaloids from Aconitum tanguticum

Yu-Bo Wang, Rong Huang, Hong-Bin Zhang, Liang Li

Journal:

Helvetica Chimica Acta

Year:

2005

Language:

english

File:

PDF, 173 KB

english, 2005

11

Reductive Elimination of Phenylsulfonyl Groups in the 3-Position of Benzo[a]heptalene-2,4-diols

Mohy eldin Abdel Fattah, Samir El Rayes, El Sayed Ahmed Soliman, Anthony Linden, Khaled Abou-Hadeed, Hans-Jürgen Hansen

Journal:

Helvetica Chimica Acta

Year:

2005

Language:

english

File:

PDF, 367 KB

english, 2005

12

Lupane Pentacyclic Triterpenes Isolated from Stems and Branches of Maytenus imbricata (Celastraceae)

Silvia Ribeiro de Souza e Silva, Gracia Divina de Fátima Silva, Luca Cláudio de Almeida Barbosa, Lucienir Pains Duarte, Sidney Augusto Vieira Filho

Journal:

Helvetica Chimica Acta

Year:

2005

Language:

english

File:

PDF, 198 KB

english, 2005

13

A Macrobicyclic Calix[6]arene Phosphocine: Conformational Studies Involving High-Resolution NMR Analysis and Molecular Modeling

Jean-Bernard Regnouf-de-Vains, Alain Cartier, Bernard Fenet, Stéphane Pellet-Rostaing

Journal:

Helvetica Chimica Acta

Year:

2005

Language:

english

File:

PDF, 282 KB

english, 2005

14

Six New Triterpene Saponins with a 21,23-Lactone Skeleton from Gynostemma pentaphyllum

Feng Yin, Li-Hong Hu

Journal:

Helvetica Chimica Acta

Year:

2005

Language:

english

File:

PDF, 196 KB

english, 2005

15

Synthesis and Photochemical Evaluation of Iodinated Squarylium Cyanine Dyes

Paulo F. Santos, Lucinda V. Reis, Isabel Duarte, João P. Serrano, Paulo Almeida, Anabela S. Oliveira, Luís F. Vieira Ferreira

Journal:

Helvetica Chimica Acta

Year:

2005

Language:

english

File:

PDF, 283 KB

english, 2005

16

Evidence for Interchange Ligand-Exchange Processes on Solvated Beryllium Cations

Ralph Puchta, Nico van Eikema Hommes, Rudi van Eldik

Journal:

Helvetica Chimica Acta

Year:

2005

Language:

english

File:

PDF, 284 KB

english, 2005

17

Modulation of the Lifetime of Water Bound to Lanthanide Metal Ions in Complexes with Ligands Derived from 1,4,7,10-Tetraazacyclododecane Tetraacetate (DOTA)

Shanrong Zhang, Xiuyan Jiang, A. Dean Sherry

Journal:

Helvetica Chimica Acta

Year:

2005

Language:

english

File:

PDF, 261 KB

english, 2005

18

Tris(perfluoroalkyl)silyl Entities as Unexpectedly Potent Tags for the Noncovalent Immobilization of Catalysts by Fluorous–Fluorous Interactions: Application to the Synthesis of Several Perfluoro-Tagged Ligands

Vasyl Andrushko, Dominik Schwinn, Carl Christoph Tzschucke, Florian Michalek, Joachim Horn, Christian Mössner, Willi Bannwarth

Journal:

Helvetica Chimica Acta

Year:

2005

Language:

english

File:

PDF, 305 KB

english, 2005

19

Syntheses and Crystal Structures of Four New Ammoniates with Heptaarsenide (As) Anions

Tobias Hanauer, Michael Grothe, Markus Reil, Nikolaus Korber

Journal:

Helvetica Chimica Acta

Year:

2005

Language:

english

File:

PDF, 522 KB

english, 2005

20

Facile Syntheses of the Three Major Metabolites of Thioridazine

Ryan J. Morrow, Jeff S. Millership, Paul S. Collier

Journal:

Helvetica Chimica Acta

Year:

2005

Language:

english

File:

PDF, 172 KB

english, 2005

21

Three New Highly Oxygenated Diterpenoids from Excoecaria cochinchinensis Lour.

Jing-Hua Yang, Shi-De Luo, Jing-Feng Zhao, Yun-song Wang, Rong Huang, Hong-Bin Zhang, Liang Li

Journal:

Helvetica Chimica Acta

Year:

2005

Language:

english

File:

PDF, 195 KB

english, 2005

22

Selective Double Functionalization of meso-Tetraphenylporphyrin Complexes on the Same Pyrrole Unit by Tandem Electrophilic/Nucleophilic Aromatic Substitution

Stanisław Ostrowski, Anna M. Raczko

Journal:

Helvetica Chimica Acta

Year:

2005

Language:

english

File:

PDF, 191 KB

english, 2005

23

Secoatisane- and Isopimarane-Type Diterpenoids from the Chinese Mangrove Excoecaria agallocha L.

Ji-Dong Wang, Zhen-Yu Li, Yue-Wei Guo

Journal:

Helvetica Chimica Acta

Year:

2005

Language:

english

File:

PDF, 174 KB

english, 2005

24

Polymer-Supported Ionic-Liquid-Catalyzed Synthesis of 1,2,3,4-Tetrahydro- 2-oxopyrimidine-5-carboxylates via Biginelli Reaction

Zong-Ting Wang, Shu-Chao Wang, Li-Wen Xu

Journal:

Helvetica Chimica Acta

Year:

2005

Language:

english

File:

PDF, 151 KB

english, 2005

25

Two Novel Olean Triterpenoids from Celastrus hypoleucus

Kui-wu Wang, Hong-xiang Sun, Bin Wu, Yuan-jiang Pan

Journal:

Helvetica Chimica Acta

Year:

2005

Language:

english

File:

PDF, 173 KB

english, 2005

26

A Novel Intramolecular Photocyclization of N-(2-Bromoalkanoyl) Derivatives of 2-Acylanilines via 1,8-Hydrogen Abstraction

Takehiko Nishio, Hiroyuki Koyama, Daigo Sasaki, Masami Sakamoto

Journal:

Helvetica Chimica Acta

Year:

2005

Language:

english

File:

PDF, 241 KB

english, 2005

27

Contents: HCA 5/2005

Journal:

Helvetica Chimica Acta

Year:

2005

Language:

english

File:

PDF, 184 KB

english, 2005