Yoshinosuke Usuki, Yoshinosuke
Material Sciences, Faculty of Science, Osaka City University - Japan

Published : 2 Documents
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Isolation of an Anti-Cancer Asperuloside from Hedyotis corymbosa L. Artanti, Nina; Hanafi, Muhammad; Andriyani, Rina; Saraswaty, Vienna; Udin, Linar Zalinar; Lotulung, Puspa D; Fujita, Ken Ichi; Usuki, Yoshinosuke
Journal of Tropical Life Science Vol 5, No 2 (2015)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (71.575 KB) | DOI: 10.11594/jtls.05.02.06

Abstract

Hedyotis corymbosa, with local name rumput mutiara, is an anti-inflammatory, anti-cancer and hepatoprotective traditional medicine.  The ethanol extract of H. corymbosa L. shows inhibitory activity to human YMB-1 breast cancer cell line with an IC50 of 6.51 mg/ml.  The methylene chloride fraction shows a potential cytotoxic activity with an IC50 of 2.75 mg/ml.  To obtain a lead compound, the extract was further purified by column chromatography. A pure compound is obtained which shows inhibitory activities against YMB-1, HL60 and KB human cell lines with IC50 values of 0.7; 11.0 and 104.2 mg/ml, respectively.  Based on the 1D and 2D FT-NMR data, the isolated compound is an asperuloside.
Sintesis Analog 3-0-Benzylstentorin sebagai Prekursor untuk Kerangka Dasar Blepharismin ERNAWATI, TENI; USUKI, YOSHINOSUKE; IIO, HIDEO
JURNAL ILMU KEFARMASIAN INDONESIA Vol 10 No 1 (2012): JIFI
Publisher : Fakultas Farmasi Universitas Indonesia

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Abstract

Metode sintesis prekursor untuk kerangka dasar dan struktural analog blepharismin telah dijelaskan. Senyawa tersebut diidentifikasi sebagai obat yang potensial untuk pengobatan terapi antivirus dan photodynamic. Analog benzil stentorin sebagai kerangka dasar blepharismin secara efektif disintesis melalui reaksi antara salah satu gugus hidroksil senyawa biantrakuinon dengan p-metoksi benzyl klorida dengan adanya kalium karbonat sebagai basa. Dimerisasi senyawa turunan bromo antrakuinon menghasilkan produk dimmer sebesar 55% sedangkan untuk pembentukan senyawa analog 3-0-benzylstentorin diperoleh rendemen hasil 70%.