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Wahyuono, Subagus
Faculty of Pharmacy Universitas Gadjah Mada Yogyakarta
Medicine & Pharmacology

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MOLECULAR MODELING OF VITEOSIN-A, A TRACHEOSPASMOLYTIC COMPOUND ISOLATED FROM N-HEXANE EXTRACT OF THE LEAVES OF Vitex Trifolia L. Alam, Gemini; Sudarmanto, B.S. Ari; Astuti, Puji; Wahyuono, Subagus
Indonesian Journal of Pharmacy Vol 13 No 4, 2002
Publisher : Faculty of Pharmacy Universitas Gadjah Mada, Yogyakarta, Skip Utara, 55281, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (179.572 KB) | DOI: 10.14499/indonesianjpharm0iss0pp180-184

Abstract

Viteosin-A, a tracheospasmolytic compound, was successfully isolated from n-hexane extract of the leaves of Vitex trifolia L. With the concentration of 0.05 and 0.15 mg/ml viteosin-A inhibited a guinea pig tracheal contraction due to histamine (10-7 – 10-3 M) in vitro by 27.1 and 47.9 %, respectively. Confirmation of C-5 and C-6 configuration is necessary to determine the active reaction site of viteosin-A and its receptor for future development. This research was focused on a molecular modeling of viteosin-A using computational method with HyperChem Pro 4.0 for Windows as software. Based on spectroscopic data and molecular modeling, viteosin-A has S configuration at C-5 and C-6, and therefore was confirmed as (5S,10S)-6S-acetoxy-8R-methyl-9-hidroxy-labda-13Z-en-16,15-olide.Keywords: viteosin-A, molecular modeling
Isolation of aphrodisiac active fraction from sanrego bark (Lunasia amara Blanco) ., Arnida; Donatus, Imono A.; Wahyuono, Subagus
Indonesian Journal of Pharmacy Vol 14 No 4, 2003
Publisher : Faculty of Pharmacy Universitas Gadjah Mada, Yogyakarta, Skip Utara, 55281, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (284.251 KB) | DOI: 10.14499/indonesianjpharm0iss0pp195-200

Abstract

Sanrego (Lunasia amara Blanco) bark is traditionally utilized as an aphrodisiac although scientifically has yet been proven. Therefore, this study is aimed to prove aphrodisiac activity, determine the compounds and the dose of the active fraction. Initially sanrego bark (600 g) was extracted in a Soxhlet apparatus with methanol (MeOH) to give MeOH extract (A, 80 g). The MeOH extract was fractionated by Ethylacetate (EtOAc) to give EtOAC soluble (B, relatively non-polar, 15.23 g) and EtOAc insoluble (C, relatively polar, 50.20 g). The aphrodisiac test was performed in male Wistar rats that were divided into 6 groups (5 rats each) [I, treated with Na-CMC 0.5%, 50 mg/kg BW; II, yohimbine, 5 mg/kg BW; III, distilled water , 2 ml/200 g BW; IV, extract A; V, fraction B; VI, fraction C], and the doses given to groups IV-VI were similar (10, 50, 100, and 200 mg/kg BW). The male’s behaviors to female rats ( introduction, climbing and coitus ) were recorded and analysed at p= 0.5. Determination of the active compounds were performed by thin layer chromatography (TLC) using various detection reagents. The result indicated that the highest aphrodisiac effect was demonstrated by fraction B, followed by extract A and fraction C . Fraction B demonstrated introduction (84.2%), climbing (84.9%) and coitus (85.2%). TLC profile suggested that fraction B contain alkaloids and terpenoids as the main components.Keywords: Sanrego bark, Lunasia amara, Aphrodisiac, Active fraction .
Co-Authors ., Arnida Alam, Gemini Astuti, Puji Donatus, Imono A. Sudarmanto, B.S. Ari