• Issue

    Helvetica Chimica Acta: Volume 94, Issue 12

    2111-2372
    December 2011
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Contents

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Contents: HCA 12/2011

  • First Published: 08 December 2011

Research Articles

Photo-Cross-Linking of Polymethacrylates with Stilbene Chromophores in the Side Chains

Angelika Jahnke,  Bernhard Beile,  Herbert Meier, 
  • Pages: 2111-2124
  • First Published: 08 December 2011
Photo-Cross-Linking of Polymethacrylates with Stilbene Chromophores in the Side Chains

Stereo-Inversion in the (4R)-γ-Decanolactone Synthesis by Saccharomyces cerevisiae: (2E,4S)-4-Hydroxydec-2-enoic Acid Acts as a Key Intermediate

Gunnar Köhler,  Paul Evans,  Leif-Alexander Garbe, 
  • Pages: 2125-2140
  • First Published: 08 December 2011
Stereo-Inversion in the (4R)-γ-Decanolactone Synthesis by Saccharomyces cerevisiae: (2E,4S)-4-Hydroxydec-2-enoic Acid Acts as a Key Intermediate

Diastereoselective Alkyl Grignard 1,4-Additions to para-Substituted (2R)-N-Cinnamoylbornane-10,2-sultam Derivatives: Influence of N-Atom Pyramidalization

Anna M. Piątek,  Agnieszka Sadowska,  Christian Chapuis,  Janusz Jurczak, 
  • Pages: 2141-2167
  • First Published: 08 December 2011
Diastereoselective Alkyl Grignard 1,4-Additions to para-Substituted (2R)-N-Cinnamoylbornane-10,2-sultam Derivatives: Influence of N-Atom Pyramidalization

Kinetics and Mechanism of Certain Acetylation Reactions with Acetamide/Oxychloride in Acetonitrile under VilsmeierHaack Conditions

Marri Venkateswarlu,  Mukka Satish Kumar,  Soma Ramgopal,  Kamatala Chinna Rajanna,  Utkoor Umesh Kumar,  Kusampally Uppalaiah,  Pondichery Kuppuswamy Saiprakash, 
  • Pages: 2168-2187
  • First Published: 08 December 2011
Kinetics and Mechanism of Certain Acetylation Reactions with Acetamide/Oxychloride in Acetonitrile under Vilsmeier<span class='icomoon'></span>Haack Conditions

An Efficient Synthesis of Optically Active trans-(3R,4R)-3-Acetoxy-4-aryl-1-(chrysen-6-yl)azetidin-2-ones Using (+)-Car-3-ene as a Chiral Auxiliary

Aarif L. Shaikh,  Orlando Esparza,  Bimal K. Banik, 
  • Pages: 2188-2193
  • First Published: 08 December 2011
An Efficient Synthesis of Optically Active trans-(3R,4R)-3-Acetoxy-4-aryl-1-(chrysen-6-yl)azetidin-2-ones Using (+)-Car-3-ene as a Chiral Auxiliary

‘Click Synthesis’ of 1H-1,2,3-Triazolyl-Based Oxiconazole (=(1Z)-1-(2,4-Dichlorophenyl)-2-(1H-imidazol-1-yl)ethanone O-[(2,4-Dichlorophenyl)methyl]oxime) Analogs

Mohammad Navid Soltani Rad,  Zeinab Asrari,  Somayeh Behrouz,  Gholam Hossein Hakimelahi,  Ali Khalafi-Nezhad, 
  • Pages: 2194-2206
  • First Published: 08 December 2011
‘Click Synthesis’ of 1H-1,2,3-Triazolyl-Based Oxiconazole (=(1Z)-1-(2,4-Dichlorophenyl)-2-(1H-imidazol-1-yl)ethanone O-[(2,4-Dichlorophenyl)methyl]oxime) Analogs

Three New E-Secoursane Triterpenoid Saponins from the Leaves of Ilex dunniana

Yue Zhang,  Lu-Jun Li,  Peng Zhang,  Hui-Fang Pi,  Han-Li Ruan,  Ji-Zhou Wu, 
  • Pages: 2207-2214
  • First Published: 08 December 2011
Three New E-Secoursane Triterpenoid Saponins from the Leaves of Ilex dunniana

Total Synthesis of (−)-Cleistenolide

Dokuburra Chanti Babu,  Kankati Ashalatha,  Chitturi Bhujanga Rao,  Jon Paul Selvam Jondoss,  Yenamandra Venkateswarlu, 
  • Pages: 2215-2220
  • First Published: 08 December 2011
Total Synthesis of (−)-Cleistenolide

Synthesis of Ring A-Modified Baicalein Derivatives

Jun-Fei Wang,  Ning Ding,  Wei Zhang,  Peng Wang,  Ying-Xia Li, 
  • Pages: 2221-2230
  • First Published: 08 December 2011
Synthesis of Ring A-Modified Baicalein Derivatives

Isoprenoids and Flavonoids with Antimicrobial Activity from Ficus conraui Warburg (Moraceae)

Rodrigue T. Kengap,  Gilbert D. W. F. Kapche,  Jean-Paul Dzoyem,  Ingrid K. Simo,  Pantaleon Ambassa,  Louis P. Sandjo,  Berhanu M. Abegaz,  Bonaventure T. Ngadjui, 
  • Pages: 2231-2238
  • First Published: 08 December 2011
Isoprenoids and Flavonoids with Antimicrobial Activity from Ficus conraui Warburg (Moraceae)

Huangqiyenins G – J, Four New 9,10-Secocycloartane (=9,19-Cyclo-9,10-secolanostane) Triterpenoidal Saponins from Astragalus membranaceus Bunge Leaves

Hai-Xue Kuang,  Qiu-Hong Wang,  Bing-You Yang,  Zhi-Bin Wang,  Yoshihito Okada,  Tohru Okuyama, 
  • Pages: 2239-2247
  • First Published: 08 December 2011
Huangqiyenins G – J, Four New 9,10-Secocycloartane (=9,19-Cyclo-9,10-secolanostane) Triterpenoidal Saponins from Astragalus membranaceus Bunge Leaves

Synthesis, Characterization, X-Ray Structural Analysis, and Iodination Ability of Benzyl(triphenyl)phosphonium Dichloroiodate

Hossein Imanieh,  Shahriar Ghammamy,  Mir Mohammad Alavi Nikje,  Farhang Hosseini,  Zahra Shokri Aghbolagh,  Hoong-Kun Fun,  Hamid Reza Khavasi,  Reza Kia, 
  • Pages: 2248-2255
  • First Published: 08 December 2011
Synthesis, Characterization, X-Ray Structural Analysis, and Iodination Ability of Benzyl(triphenyl)phosphonium Dichloroiodate

Synthesis and Mechanistic Study of Steroidal Oxime Ethers

Kamlesh Sharma,  Shivani B. Mishra,  Ajay K. Mishra, 
  • Pages: 2256-2263
  • First Published: 08 December 2011
Synthesis and Mechanistic Study of Steroidal Oxime Ethers

Oleanane-Type Triterpenoids from Glochidion assamicum

Xiao-Qing Liu,  Hong-Li Huang,  Ming-Jun Yao,  Guang-Tian Han,  Ning Liu,  Ji-Cheng Yuan,  Cheng-Shan Yuan, 
  • Pages: 2264-2271
  • First Published: 08 December 2011
Oleanane-Type Triterpenoids from Glochidion assamicum

Polyhydroxypregnane Glycosides from the Roots of Cynanchum otophyllum

Lie-Feng Ma,  Wei-Guang Shan,  Zha-Jun Zhan, 
  • Pages: 2272-2282
  • First Published: 08 December 2011
Polyhydroxypregnane Glycosides from the Roots of Cynanchum otophyllum

Baeckeins A and B, Two Novel 6-Methylflavonoids from the Roots of Baeckea frutescens

Bei-Xi Jia,  Jie Yang,  Xiao-Qing Chen,  Yuan Cao,  Mao-Xiang Lai,  Qiang Wang, 
  • Pages: 2283-2288
  • First Published: 08 December 2011
Baeckeins A and B, Two Novel 6-Methylflavonoids from the Roots of Baeckea frutescens

Diversity-Oriented Synthesis of Novel 2′-Aminospiro[11H-indeno[1,2-b]quinoxaline-11,4′-[4H]pyran] Derivatives via a One-Pot Four-Component Reaction

Alireza Hasaninejad,  Nooshin Golzar,  Mohsen Shekouhy,  Abdolkarim Zare, 
  • Pages: 2289-2294
  • First Published: 08 December 2011
Diversity-Oriented Synthesis of Novel 2′-Aminospiro[11H-indeno[1,2-b]quinoxaline-11,4′-[4H]pyran] Derivatives via a One-Pot Four-Component Reaction

New and Bioactive Sesquiterpenes from Schisandra sphenanthera

Khongorzul Mendbayar,  I-Wen Lo,  Chia-Ching Liaw,  Yu-Chi Lin,  Ahmed E. Fazary,  Yuh-Chi Kuo,  Hsiu-Ju Wang,  Been Huang Chiang,  Shorong-Shii Liou,  Ya-Ching Shen, 
  • Pages: 2295-2302
  • First Published: 08 December 2011
New and Bioactive Sesquiterpenes from Schisandra sphenanthera

Author Index

Author Index

  • Pages: 2303-2323
  • First Published: 08 December 2011

Subject Index

Subject Index

  • Pages: 2324-2372
  • First Published: 08 December 2011