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PENAPISAN VIRTUAL SENYAWA TURUNAN METIL SINAMAT PADA ENZIM SIKLOOKSIGENASE-2 (COX-2 Teni Ernawati
Jurnal Kimia Terapan Indonesia Vol 14, No 2 (2012)
Publisher : Research Center for Chemistry - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (514.69 KB) | DOI: 10.14203/jkti.v14i2.350

Abstract

Inflammation is the response of living tissue to vascular injury. Non-Steroid Anti-Inflammatory Drugs(NSAIDs)  could  control  pain  caused  by  inflammation.  Therapeutic  effects  of  NSAIDs  are  related  to  themechanism of the cyclooxygenase-1 (COX-1) enzyme and the cyclooxygenase-2 (COX-2) enzyme in inhibiting theproduction of prostaglandins. In this paper, we report the virtual screening of methyl cinnamate derivativecompounds against the COX-2. All methyl cinnamate derivative compounds were  molecular docking simulatedusing the Protein-Ligand ANT System (PLANTS) software with  ZINC03814717 as the reference compound. Fromthe results of virtual screening, it was obtained that  derivative compounds of methyl cinnamate were predicted asactive  COX-2  inhibitors  because  they  have  ChemPLP  score  better  than  that  of  the  reference  compoundsZINC03814717. The compound of acid 3- (4-benzoylphenyl) propionate was predicted as having the best score ofChemPLP.Keywords:  Non-Steroid Anti-Inflammatory (NSAID), virtual screening, enzyme cyclooxygenase-2 (COX-2), methyl cinnamate derivative
The Synthesis of Quinidine Salicylate Ester Compound Intan Nurjaya; Muhammad Hanafi; Puspa D.N Lotulung; Teni Ernawati; Sri Mursiti
Jurnal Kimia Terapan Indonesia Vol 20, No 2 (2018)
Publisher : Research Center for Chemistry - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (522.016 KB) | DOI: 10.14203/jkti.v20i2.403

Abstract

Quinidine a compound isolated from quinine plants, one of the species of quinine plants is (Chincona ledgereriana) From PT SIL Lembang. The purpose of this study was obtain quinidine salicylate ester through esterification reaction. In this study, the synthesis of quinidine ester compound by esterification reaction was conducted. Esterification reaction was conducted by using DCC activator and DMAP catalyst with one carboxylic acid namely salicylate acid producing new compound namely quinidine salicylate, Subsequent Quinidine salicylate was obtained in the form of oil with 97% yield. The compound obtained from the synthesis was then identified using Thin Layer Chromatography continue analyzed using with Spectrophotometer, LC-ESI-MS spectroscopy. Results show that the target compound has been successfully synthesized.
STANDARDISASI EKSTRAK PEGAGAN, CENTELLA ASIATICA SEBAGAI OBAT HERBAL TERSTANDAR HEPATOPROTEKTOR Puspa Dewi N Lotulung; Sri Handayani; Teni Ernawati; Tri Yuliani; Nina Artanti; Tjandrawati Mozef
Jurnal Kimia Terapan Indonesia Vol 17, No 2 (2015)
Publisher : Research Center for Chemistry - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jkti.v17i2.34

Abstract

Herbal medicinal products would be affected by the quality of raw materials. In turn, the quality of raw material will also be influenced by various factors such as soil conditions, cultivation, post-harvest processing, and the processing of raw materials into crude drug or extract. Therefore, in order to make good herbal medicines, it is necessary to make standardization of herbal extracts that produced herbal medicines that have the same quality and functions of effectiveness in each process. From preliminary studies that have been done, Centella asiatica is one of the potential plants as a source of hepatoprotective compounds. Test in vivo and in vitro against Centella asiatica extracts have shown very good results. Ethyl acetate extract with 17.5 mg/kg of doses body weight and butanol 228.8 mg/kgof doses body weight has been applied for in vivo test using mice induced by CCl4; theydemonstrated hepatoprotective effects. Ethyl acetate extracts were able to reduce levels of the enzyme alanine aminotransferase (ALT) and aspartate aminotransferase (AST) by 56 % and 44 % respectively while butanol extract can reduce the enzymes AST levels by 3%. Standardizationof Centella asiatica extract performed in this study was the characterization of the extract in the form of non-specific and specific parameters corresponding to the reference of PPOMN (Ministry of health Republic of Indonesia, 2000) such as levels of drying shrinkage, ash content, total plate count microbial contamination, levels of water-soluble compounds, levels of compounds that are soluble in ethanol, phytochemical test, total phenolic content, total flavonoid content and the determination of Pb and Cd weight.The results showed that non-specific parameters for the ethanol extract of Centella asiatica were requirements based on Herbal Pharmacopoeia in 2008 which includes parameters such as determination of shrinkage on drying ≤ 10%, ash content ≤ 16.6% and negative microbial contamination. Specific parameters for the ethanol extract of Centella asiatica have met the requirements of Herbal pharmacopeia in 2008.Keywords: Centellaasiatica, hepatoprotective, standardized herbal medicine, specificparameters, and non-specific parameters