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KMID : 0604520170430030195
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Journal of the Society of Cosmetic Scientists of Korea
2017 Volume.43 No. 3 p.195 ~ p.200
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Synthesis of Methylated and Acetylated Derivatives of Meso-dihydroguaretic Acid and Study of Their Inhibitory Activities on LPS Derived Nitric Oxide (NO) Production
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Choi Kyung-Oh
Rho Ho-Sik
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Abstract
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This study was conducted to examine the inhibitory effects of meso-dihydroguaretic acid (MDGA, 1) and its synthetic derivatives (compound 2 and 3) against NO production. MDGA is a lignan component isolated from the bark of Machilus thunbergii Sieb. et Zucc. We synthesized dimethylated MDGA (2), diacetylated MDGA (3) and compared NO inhibition of two derivatives with that of MDGA (1). MDGA (1) and compound 3 showed suppressive effects against the generation of NO in LPS-activated macrophages. RT-PCR analysis suggested that MDGA (1) and compound 3 inhibited NO production through the suppression of iNOS mRNA expression. From these results, diacetylated MDGA (3) can be used as a pro-drug for MDGA.
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KEYWORD
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meso-dihydroguaretic acid , methylated derivatives , acetylated derivative , nitric oxide , LPS
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