1. Reactions of purine derivatives with phosphorus pentaoxide and triethylamine and their antitumor effects

   • H. H. Moharram
   • A. M. Osman

   Original Articles Pages: 1 - 4

2. Synthesis of substituted arylazothioxanthones as potential schistosomicidal agents

   • M. M. El-Kerdawy
   • A. A. El-Emam
   • E. Abushanab

   Original Articles Pages: 5 - 7

3. Some nucleophilic substitutions in 2,4-and 2,4,8-trichloro-pyrido [3,2-d] pyrimidines

   • Said M. Boyomi
   • Abdel-Kader M. Ismaiel
   • Mohmed M. El-Kerdawy

   Original Articles Pages: 8 - 11

4. New synthesis of chromonopyrroloimidazolinones and arylidene thioxoimidazolinones

   • Mahfouz A. Abdel Aziz
   • Bahia Y. Baiad
   • A. M. Shalaby

   Original Articles Pages: 12 - 16

5. Reactivity of 7-dithiocarboxy-imidazo[2,1-b]thiazoliumbetaine with aliphatic alkylating agents

   • Jung Wha Song
   • Myung Eun Suh
   • Sang Woo Park

   Original Articles Pages: 17 - 21

6. Pharmacological evaluation of the glycosidated phenylpropanoids containing fraction fromOrobanche crenata

   • O. A. El-Shabrawy
   • F. R. Melek
   • A. S. Radwan

   Original Articles Pages: 22 - 25

7. Nitrite scavenging effect by flavonoids and its structure-effect relationship

   • Jae Sue Choi
   • Si Hyang Park
   • Jin-Ho Choi

   Original Articles Pages: 26 - 33

8. Effect of papaverine on acetylcholinesterase in rat brain

   • Eun Hee Park
   • Chung Eun

   Original Articles Pages: 34 - 38

9. Chemical study on the stem ofCudrania tricuspidata

   • Han Suk Young
   • Jong Hee Park
   • Jae Sue Choi

   Original Articles Pages: 39 - 41

10. Saponins from the roots ofPulsatilla koreana

    • Sam Sik Kang

    Original Articles Pages: 42 - 47

11. Panaxyne epoxide, a new cytotoxic polyyne fromPanax ginseng root against L1210 cells

    • Shin Il Kim
    • Kyu Sang Kang
    • You Hui Lee

    Original Articles Pages: 48 - 51

12. The crystal structure of cinmetacin (C₂₁ H₁₉ NO₄), a non-steroidal antiinflammatory agent

    • Yang Bae Kim
    • Il Yeong Park
    • Yang Hwan Park

    Original Articles Pages: 52 - 57

13. Chiral recognition in gas chromatographic resolution of amino acid enantiomers

    • Man Ki Park
    • Jeong Sun Yang
    • Mi Young Lee

    Original Articles Pages: 58 - 61