• Ethyl Chloroformate as Derivatizing Reagent for Gas Chromatographic Determination of α-Keto acids and Amino acids from Pharmaceutical Preparation 

  KULSOOM UBEDULLAH ABBASI; MUHAMMAD YAR KHUHAWAR; MUHAMMAD IQBAL BHAMGER; KHALIDA PARVEEN MAHAR; ABDUL HAMEED CHANNAR (Karachi: The Chemical Society Of Pakistan, 2011-10-30)

  α-keto acids pyruvic acid (PYR), 2-ketobutyric acid (KBA), 3-methyl-2-oxobutyric acid (MKBA), 3- methyl-2-oxovalaric acid M3KVA), 4- methyl-2-oxovalaric acid (M4KVA), 2- ketohexanoic acid (KHA) and phenylpyruvic acid (PPYR) ...
• Antiproliferative Activity and Chemical Constituents of Hypericum oblongifolium 

  MUMTAZ ALI; MOHAMMAD ARFAN; KHAIR ZAMAN; HABIB AHMAD; NAZIA AKBAR; ITRAT ANIS; MUHAMMAD RAZA SHAH (HEJ Research Institute of Chemistry, University of Karachi, Karachi, 2011-10-29)

  The antiproliferative activity of hexane (F1), ethyl acetate (F2), butanol (F3) and water (F4) extracts of H. oblongifolium were tested in vitro for their anti- proliferative (anticancer) activity on the cell lines: HT-29 ...
• Antimicrobial and Antioxidant Activities of Phenolic Compound Extracted from New Verbascum Species Growing in Turkey 

  FATMA ZERRIN SALTAN; MUNEVVER SÖKMEN; MEHTAP AKIN; HATICE TANER SARAÇOĞLU; RAMZAN SÜLEYMAN GÖKTÜRK; MANZOOR AHMAD; MUMTAZ ALİ; MUHAMMAD RAZA SHAH (HEJ Research Institute of Chemistry, University of Karachi, Karachi, 2011-10-28)

  The aim of this study was to evaluate the antimicrobial and antioxidant potential of the aerial parts of four new Verbascum L. (Scrophulariaceae) species namely, Verbascum bellum Hub.-Mor., Verbascum detersile Boiss. & ...
• Comparative Synthetic Study of 1,4-Dihydroxy Anthraquinone (Quinizarin) Dye Intermediate 

  KHALID PERVEZ BHATTI; MUHAMMAD ZUBER (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-10-27)

  1,4-Dihydroxy anthraquinone (quinizarin) has been synthesised with two different precursors’ p-chlorophenol and hydroquinone by condensation of phthalic anhydride. It has been noticed that p-chlorophenol gave higher yield ...
• The Synthesis of N,S-Substituted compounds from the reactions of 2-Nitrohalobuta-1,3-diene with Mercaptocoumarin 

  Fatma GÜLAY KIRBASLAR; FİLİZ AVCI; CEMİL İBİS (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-10-26)

  4-Bromo-1,3,4-trichloro-2-nitro-1-(7-coumarinthio-4-methyl)-1,3-butadiene (3), and 4-Bromo-3,4-dichloro-2-nitro-1,1-bis (7-coumarinthio-4-methyl)-1,3-butadiene (4) were synthesized from the reactions of 4-bromo-1,1,3,4-t ...
• Phytochemicals from Ipomoea carnea collected from Murree Hills 

  MUHAMMAD SALEEM; MUHAMMAD IMRAN TOUSEEF; NAHEED RIAZ; MARIA HAFEEZ; SHABIR AHMED; ABDUL JABBAR; MUHAMMAD FARRUKH NISAR; SAEED AHMAD; IRSHAD AHMAD (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-10-25)

  pomoea carnea has been identified as a medicinal shrub and produces a variety of secondary metabolites. Present study deals with the isolation and identification of a naturally occurring new compound, dodecyl-p-coumarate ...
• Chemical Composition and the Regional Effect of Vitex negundo Linn. var. cannabifolia (Sieb.et Zucc.) Hand.-Mazz. Essential oils and the Regional Effect on it 

  YING TANG; GANG CHEN; JIE ZHANG; SHU-ZHEN MU (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-10-24)

  The chemical constituents of the essential oil of Vitex negundo Linn. var. cannabifolia (Sieb.et Zucc.) Hand.-Mazz. in Zhangjiazhai Mount, Yimeng Mountain Area, North China were analyzed by GC-MS. Fifty seven components ...
• The investigation of the Anti-hypercholesterolemic Activities of Thymbra Spicata Labiata Oil (Karabas Thyme Oil) and Atorvastatin 

  HILAL DEMIRALAY; MEHMET. AKDOGAN; METIN CIRIS (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-10-23)

  The leaves of TSL (Thymbra Spicata Labiatae), which include plant sterols and stanols, are used in the treatment of hypercholesterolemia, which is a highly prevalent health problem. This study aimed to determine the ...
• Synthesis and Characteristics of UV-Curable Polyurethane-Co-Acrylic Coatings for Stainless Steel 

  JOON. SUK CHOI; SHER BAHADUR KHAN; EUI SOUNG JANG; JONGCHUL SEO; HAKSOO HAN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-10-22)

  UV-curable polyurethane acrylate (PU) has been synthesized by reacting polyol (polycaprolactone triol) and diisocyanate (isophorone diisocyanate) and improved the adhesion properties of PU by coating with 50 weight percent ...
• Anti-bacterial and Anti-leishmanial Studies of 4, 6-diarylpyrimidin-2-amines 

  MUJAHID HUSSAIN BUKHARI; HAMID LATIF SIDDIQUI; CHAUDHARY MUHAMMAD ASHRAF; TANVIR HUSSAIN (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-10-21)

  Seven new chalcones along with nine already reported ones were synthesized from aryl aldehydes and substituted acetophenones by Claisen-Schmidt condensation. Each chalcone was treated with guanidine hydrochloride followed ...
• Microbial Transformation of Vanillin Isolated from Melia azedarach to Vanillyl Alcohol followed by Protease Inhibition and Antioxidant Activity 

  DURRE SHAHWAR; MUHAMMAD ASAM RAZA; TOQIR ALI; VIQAR UDDIN AHMAD (HEJ Research Institute of Chemistry, University of Karachi, Karachi., 2011-10-20)

  Vanillin (1) was isolated from ethanolic extract of Melia azedarach L. and incubated in the culture of Aspergillus niger GC-4, which resulted in vanillyl alcohol (2). The product was identified by mass, ¹H and ¹³C-NMR ...
• A Cystein Protease from Asteraceae (Centaurea Aegialophila) 

  NAZAN DEMİR; HAYRUNNISA NADAROĞLU; MUHARREM TOPAL; YAŞAR DEMİR (Karachi: The Chemical Society Of Pakistan, 2011-10-19)

  Proteases are enzymes that perform very important functions in organisms and are used for a variety of objectives in vitro. In recent years, proteases have been used for clinical, pharmaceutical (alimentary digestion, ...
• Secondary Metabolites from Caragana ambigua 

  MAJIDA; REHAN KHAN; ITRAT FATIMA; AMAN KARIM; ABDUL MALIK; RASOOL BAKHSH TAREEN (Karachi: The Chemical Society Of Pakistan, 2011-10-18)

  A new naturally occurring pregnane derivative named as ambiguanol (1) has been isolated from ethyl acetate soluble sub-fraction of the ethanolic extract of Caragana ambigua along with E-cinnamic acid (2), β-sitosterol ...
• Antiviral Activity Evaluation of Pyrazolo[4,3-e][1,2,4]triazines 

  MARIUSZ MOJZYCH (Karachi: The Chemical Society Of Pakistan, 2011-10-17)

  The main purpose of this study is to screen synthesized pyrazolo[4,3- e][1,2,4]triazine derivatives for their antiviral activity against a panel of DNA and RNA viruses. Minimum cytotoxic and minimum virus-inhibitory ...
• Antifungal Activity of the Pyrolyzate of Glucose, Sucrose and Starch in Comparison to Paper Pyrolyzate 

  ZAHID HUSSAIN; KHALID MOHAMMED KHAN; SHAHNAZ PERVEEN; IFTIKHAR HUSSAIN BUKHARI (Karachi: The Chemical Society Of Pakistan, 2011-10-16)

  Glucose, sucrose, starch and cellulose were pyrolyzed at 300 º C. The antifungal activities of these pyrolyzates were investigated. All of these pyrolyzates were found to be remarkably active against Trychophyton longifusus. ...
• Improved Synthesis of Ferrocenyl aniline 

  ATAF ALI ALTAF; NASIR KHAN; AMIN BADSHAH; BHAJAN LAL; SHAFIQULLAH; SAEED ANWAR; MUHAMMAD SUBHAN (Karachi: The Chemical Society Of Pakistan, 2011-10-15)

  Comparative synthesis of ferrocenyl aniline from nitro phenyl ferrocene using different reducing agents, like Sn/HCl, Zn/HCl, Pd-charcoal/NH₂-NH₂ and Zn/formic acid, has been studied and found that Zn/formic acid system ...
• Studies of Antifungal Activity of Forsskalea tenacissima 

  MUHAMMAD QAISAR; VIQAR UDDIN AHMAD; MOHAMMAD NISAR; SYED NAEEMUDDIN GILANI; SAMREEN PERVEZ (Karachi: The Chemical Society Of Pakistan, 2011-10-14)

  Antifungal activity of different extracts from Forsskalea tenacissima prepared by solvent-solvent extraction and vacuum liquid chromatography (VLC) was determined. Extracts were found to be active against Candida albicans, ...
• Bioassay Directed Isolation Studies on Solanum surrattense 

  EJAZ AHMED; AHSAN SHARIF; HAQ NAWAZ; MUKHTAR-UL-HASSAN; MUHAMMAD AZAM RASOOL; KHADIJA NAFEESA; ROBINA BEGUM; MUHAMMAD ASHRAF; TARIQ MAHMUD (Karachi: The Chemical Society Of Pakistan, 2011-10-13)

  Bioassay directed isolation studies on solanum surrattense have resulted in the isolation of three steroidal alkaloids namely, acetyl-solasodine (1), khasianine (2) and solamargine (3) from the ethyl acetate soluble fraction. ...
• Phytochemical and Antimicrobial Studies of Grewia tenax 

  EJAZ AHMED; AHSAN SHARIF; SABBIR HUSSAIN; ABDUL MALIK; MUKHTAR-UL-HASSAN; MUNAWAR ALI MUNAWAR; SAEED AHMAD NAGRA; JAMIL ANWAR; MUHAMMAD ASHRAF; NIGHAT AFZA; MAKSHOOF ATHAR (Karachi: The Chemical Society Of Pakistan, 2011-10-12)

  For the first time eleven compounds have been isolated from the ethyl acetate soluble fraction of whole plant of Grewia tenax namely, β-sitosterol (1), β-sitosteryl acetate (2), β-amyrin (3), β-amyrin acetate (4), ...
• Microwave Assisted Synthesis of Triphenodioxazines: A Novel and Convenient Approach 

  MUHAMMAD NAJEEBULLAH; MUNAWAR ALI MUNAWAR; AMRAN WAHEED; AHSAN SHARIF; EJAZ AHMED (Karachi: The Chemical Society Of Pakistan, 2011-10-11)

  A novel and economical method for the synthesis of triphenodioxazines is described. The method involves the oxidative cyclisation of the intermediates 2,5-bis-(arylamino)-3,6- dichlorocyclohexa-2,5-diene-1,4-dione in 95-97% ...

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