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Articles by Abbas Shafiee
Total Records ( 3 ) for Abbas Shafiee
  Mohammad Ali Faramarzi , Mojtaba Tabatabaei Yazdi , Mohsen Amini and Abbas Shafiee
  The whole cells of Acremonium strictum transformed prednisolone at its side chain to produce two steroid compounds. 21,21-Dimethoxy-11β-hydroxypregn-1,4-dien-3,20-dione was the main metabolite which its production has not been previously reported using microbiological means. This metabolite together with a hydroxylated derivative, 11β-hydroxyandrost-1,4-dien-3,17-dione, were purified with preparative TLC followed by their identification through 1H, 13C NMR and other spectroscopic data. Best fermentation condition was found to be 5 day incubation at 25 °C and pH value of 6 according to TLC profiles. Optimum concentration of the substrate, which gave maximum bioconversion efficiency, was 1 mg mL-1 in one batch. Biotransformation was completely inhibited in a concentration above 5 mg mL-1.
  Mahmoud Biglar , Mohammad Reza Shams Ardekani , Mahnaz Khanavi , Abbas Shafiee , Abdolhossein Rustaiyan , Fahimeh Salimpour and Fatemeh Farjadmand
  The oils obtained by hydrodistillation and steam distillation of the aerial part of Stachys pubescence Ten. was analyzed by GC and GC/MS. Water distilled essential oil of the aerial part of S. pubescence, was rich in fatty acids like hexadecanoic acid and linoleic acid and also benzaldehyde and spathulenol whereas the steam distilled oil of the plant contained hexadecanoic acid, spathulenol and eugenol. Both of oils were rich in fatty acids (36.6 and 27.9%, respectively). Moreover, the content of oxygenated mono and sesquiterpenss were defined higher in steam distilled oil than hydrodistiled oil (24.5, 17.2 and 6.1, 15.5%, respectively). In conclusion it seems that oxygenated terpenoids were trended to steam distillation method more than hydrodistilation, respectively.
  Asghar DAVOOD , Eskandar ALIPOUR and Abbas SHAFIEE
  4(5)-Chloro-imidazole-5(4)-carboxaldehyde derivatives are important precursors for the preparation of biologically active compounds. We developed a simple, novel, and efficient method for the synthesis of these compounds. The chemistry described is amenable to large-scale use and is flexible enough to allow the preparation of analogs.
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