Helvetica Chimica Acta Table of Contents: 2012, vol. 95, No. 8

Contents: HCA 8/2012

i
Full: PDF (224 K)
Preparation and Characterization of New C2- and C1-Symmetric Nitrogen, Oxygen, Phosphorous, and Sulfur Derivatives and Analogs of TADDOL. Part I : Compounds Containing One or Two Sulfur-Containing Substituents and Use in Cu-Catalyzed Enantioselective Conjugate Additions to Cyclic Enones
Arkadius Pichota, Volker Gramlich, Albert K. Beck and Dieter Seebach
1239-1272

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Preparation and Characterization of New C2- and C1-Symmetric Nitrogen, Oxygen, Phosphorous, and Sulfur Derivatives and Analogs of TADDOL. Part II : TADDAMIN-Derived and Phosphorous-Containing Compounds
Arkadius Pichota, Volker Gramlich, Hans-Ulrich Bichsel, Thomas Styner, Thomas Knöpfel, Ralf Wünsch, Tobias Hintermann, W. Bernd Schweizer, Albert K. Beck and Dieter Seebach
1273-1302

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Preparation and Characterization of New C2- and C1-Symmetric Nitrogen, Oxygen, Phosphorous, and Sulfur Derivatives and Analogs of TADDOL. Part III : Some New Chiral Brønsted Acids for Organocatalysis and pKa Values in MeO-(CH2)2-OH/H2O – A Survey
Dieter Seebach, Albert K. Beck, Hans-Ulrich Bichsel, Arkadius Pichota, Christof Sparr, Ralf Wünsch and W. Bernd Schweizer
1303-1324

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Synthesis of Aib-Pro Oligopeptides by Repeated Azirine Coupling with the Aib-Pro Synthon
Svetlana A. Stoykova, Anthony Linden and Heinz Heimgartner
1325-1351

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Modified Riemschneider Reaction of 3-Thiocyanatoquinolinediones
Ondřej Rudolf, Vladimír Mrkvička, Antonín Lyčka, Michal Rouchal and Antonín Klásek
1352-1372

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Synthesis, Characterization, and Biological Evaluation as Antibacterial Agents of Water-Soluble Calix[4]arenes and Phenol Derivatives Incorporating Carboxylate Groups
Maxime Mourer, Stéphane Fontanay, Raphaël E. Duval and Jean-Bernard Regnouf-de-Vains
1373-1386

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Further Withaphysalin Derivatives from Acnistus arborescens
Ana Isabel V. Maia, Raimundo Braz-Filho, Edilberto R. Silveira, Carlos Alberto de Simone and Otília Deusdênia L. Pessoa
1387-1394

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A New 30-Noroleanane Saponin from Wedelia chinensis
Xing Li, Yu-Fang Wang, Qing-Wen Shi and Françoise Sauriol
1395-1400

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Diketopiperazine Alkaloids Produced by the Endophytic Fungus Aspergillus fumigatus from the Stem of Erythrophloeum fordiiOliv.
Yu-Xi Liu, Shuang-Gang Ma, Xiao-Jing Wang, Nan Zhao, Jing Qu, Shi-Shan Yu, Jun-Gui Dai, Ying-Hong Wang and Yi-Kang Si
1401-1408

Full: PDF (198 K)
The Reactions of α-Ylidene (Vinylidene, Benzylidene, Styrylmethylidene) Bis[carbonyls] with Copper Mono/Bis[carbonylcarbenoids]
Gökçe Merey, Mustafa Kaya and Olcay Anaç
1409-1424

Full: PDF (394 K)
Ultrasound-Assisted Synthesis of 3-(Arylamino)-1-ferrocenylpropan-1-ones
Anka Pejović, Dragana Stevanović, Ivan Damljanović, Mirjana Vukićević, Sladjana B. Novaković, Goran A. Bogdanović, Tatjana Mihajilov-Krstev, Niko Radulović and Rastko D. Vukićević
1425-1441

Full: PDF (290 K)
Polyprenylated Xanthones and Benzophenones from the Bark of Garcinia oblongifolia
Wei-Guang Shan, Tian-Song Lin, Hai-Ning Yu, Yan Chen and Zha-Jun Zhan
1442-1448

Full: PDF (190 K)
Alkaloids from the Stems of Glycosmis pentaphylla
Guang-Zhong Yang, Yi Wu and Yu Chen
1449-1454

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A New Megastigmane Palmitate and a New Oleanane Triterpenoid from Aster yomenaMakino
Qinglong Jin, Hong-Guang Jin, A Ryun Kim and Eun-Rhan Woo
1455-1460

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Improved Synthesis of Indirubin Derivatives by Sequential Build-Up of the Indoxyl Unit: First Preparation of Fluorescent Indirubins
Herbert M. Riepl and Corinna Urmann
1461-1477

Full: PDF (273 K)