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Cholinesterase Inhibitory Constituents from Capsosiphon fulvescens
Zhe Fang,Su Yang Jeong,최재수,민병선,민보경,우미희 한국생약학회 2012 Natural Product Sciences Vol.18 No.4
Nine compounds (1 - 9), a-linolenic acid (1), cis-5,8,11,14,17-elcosapentaenoic acid (2), phytol (3), loliolide (4), uridine (5), thymidine (6), deoxyadenosine (7), adenine (8), and adenosine (9), were isolated from the n-hexane, methylene chloride, ethyl acetate and n-butanol fractions of Capsosiphon fulvescens. The structures of these compounds were elucidated on the basis of spectroscopic evidence. Compounds 1 - 9 exhibited acetylcholinesterase (AChE) inhibitory activities with IC50 values ranging from 114.91 to 252.40 mM, whereas 2 -4 showed butyrylcholinesterase (BChE) inhibitory activities with IC50 values ranging from 251.18 to 499.16 mM.
Quantitative and Pattern Recognition Analyses for the Quality Evaluation of Magnoliae Flos by HPLC
Zhe Fang,Chang Min Shen,Dong Cheul Moon,손건호,손종근,우미희 대한화학회 2010 Bulletin of the Korean Chemical Society Vol.31 No.11
In this study, quantitative and pattern recognition analysis for the quality evaluation of Magnoliae Flos using HPLC/UV was developed. For quantitative analysis, eleven major bioactive lignan compounds were determined. The separation conditions employed for HPLC/UV were optimized using ODS C18 column (250 × 4.6 mm, 5 μm) with isocratic elution of acetonitrile and water with 1% acetic acid as the mobile phase at a flow rate of 1.0 mL/min and a detection wavelength of 278 nm. These methods were fully validated with respect to the linearity, accuracy, precision, recovery,and robustness. The HPLC/UV method was applied successfully to the quantification of eleven major compounds in the extract of Magnoliae Flos. The HPLC analytical method for pattern recognition analysis was validated by repeated analysis of twenty one reference samples corresponding to seven different species of Magnoliae Flos and nine samples purchased from market. The results indicate that the established HPLC/UV method is suitable for the quantitative analysis and quality control of multi-components in Magnoliae Flos.
Quantitative Analyses for the Quality Evaluation of Salviae Miltiorrhizae Radix by HPLC
Zhe Fang,Dong Cheul Moon,손건호,손종근,민병선,우미희 한국생약학회 2010 Natural Product Sciences Vol.16 No.4
In this study, quantitative analysis for the quality evaluation of Salviae Miltiorrhizae Radix using HPLC/UV was developed. For quantitative analysis, six major bioactive compounds were determined. The separation conditions employed for HPLC/UV were optimized using ODS C18 column (250 ? 4.6 mm, 5 mm) with gradient condition of A (1% formic acid in H2O) and B (acetonitrile : methanol : formic acid = 100 : 75 : 1) as the mobile phase at a flow rate of 1.0 mL/min and a detection wavelength of 280 nm. These methods were fully validated with respect to the linearity, accuracy, precision and recovery. The HPLC/UV method was applied successfully to the quantification of six major compounds in the Salviae Miltiorrhizae Radix. The results indicate that the established HPLC/UV method is suitable for the quantitative analysis.
Quantitative and Pattern Recognition Analyses for the Quality Evaluation of Magnoliae Flos by HPLC
Fang, Zhe,Shen, Chang Min,Moon, Dong-Cheul,Son, Kun-Ho,Son, Jong-Keun,Woo, Mi-Hee Korean Chemical Society 2010 Bulletin of the Korean Chemical Society Vol.31 No.11
In this study, quantitative and pattern recognition analysis for the quality evaluation of Magnoliae Flos using HPLC/UV was developed. For quantitative analysis, eleven major bioactive lignan compounds were determined. The separation conditions employed for HPLC/UV were optimized using ODS $C_{18}$ column ($250{\times}4.6\;mm$, $5\;{\mu}m$) with isocratic elution of acetonitrile and water with 1% acetic acid as the mobile phase at a flow rate of 1.0 mL/min and a detection wavelength of 278 nm. These methods were fully validated with respect to the linearity, accuracy, precision, recovery, and robustness. The HPLC/UV method was applied successfully to the quantification of eleven major compounds in the extract of Magnoliae Flos. The HPLC analytical method for pattern recognition analysis was validated by repeated analysis of twenty one reference samples corresponding to seven different species of Magnoliae Flos and nine samples purchased from market. The results indicate that the established HPLC/UV method is suitable for the quantitative analysis and quality control of multi-components in Magnoliae Flos.
Fang, Zhe,Moon, Dong-Cheul,Son, Kun-Ho,Son, Jong-Keun,Min, Byung-Sun,Woo, Mi-Hee Korean Chemical Society 2011 Bulletin of the Korean Chemical Society Vol.32 No.1
In this study, quantitative and pattern recognition analysis for the quality evaluation of Cimicifugae Rhizoma using HPLC/UV was developed. For quantitative analysis, three major bioactive phenolic compounds were determined. The separation conditions employed for HPLC/UV were optimized using ODS $C_{18}$ column ($250{\times}4.6mm$, $5{\mu}M$) with isocratic elution of acetonitrile and water with 0.1% phosphoric acid as the mobile phase at a flow rate of 1.0 mL/min and a detection wavelength of 323 nm. These methods were fully validated with respect to the linearity, accuracy, precision, recovery, and robustness. The HPLC/UV method was applied successfully to the quantification of three major compounds in the extract of Cimicifugae Rhizoma. The HPLC analytical method for pattern recognition analysis was validated by repeated analysis of twelve reference samples corresponding to five different species of Cimicifugae Rhizoma and seventeen samples purchased from markets. The results indicate that the established HPLC/UV method is suitable for the quantitative analysis and quality control of multi-components in Cimicifugae Rhizoma.
Zhe Fang,Dong Cheul Moon,손건호,손종근,민병선,우미희 대한화학회 2011 Bulletin of the Korean Chemical Society Vol.32 No.1
In this study, quantitative and pattern recognition analysis for the quality evaluation of Cimicifugae Rhizoma using HPLC/UV was developed. For quantitative analysis, three major bioactive phenolic compounds were determined. The separation conditions employed for HPLC/UV were optimized using ODS C18 column (250 × 4.6 mm, 5 μM) with isocratic elution of acetonitrile and water with 0.1% phosphoric acid as the mobile phase at a flow rate of 1.0 mL/min and a detection wavelength of 323 nm. These methods were fully validated with respect to the linearity, accuracy, precision,recovery, and robustness. The HPLC/UV method was applied successfully to the quantification of three major compounds in the extract of Cimicifugae Rhizoma. The HPLC analytical method for pattern recognition analysis was validated by repeated analysis of twelve reference samples corresponding to five different species of Cimicifugae Rhizoma and seventeen samples purchased from markets. The results indicate that the established HPLC/UV method is suitable for the quantitative analysis and quality control of multi-components in Cimicifugae Rhizoma.
Anticholinesterase and Antioxidant Constituents from <i>Gloiopeltis furcata</i>
Fang, Zhe,Jeong, Su Yang,Jung, Hyun Ah,Choi, Jae Sue,Min, Byung Sun,Woo, Mi Hee The Pharmaceutical Society of Japan 2010 Chemical & pharmaceutical bulletin Vol.58 No.9
<P>Activity-directed isolation of the ethyl acetate, methylene chloride and <I>n</I>-hexane fractions of <I>Gloiopeltis furcata</I> resulted in the isolation of 18 compounds. Their structures were elucidated as 2-(3-hydroxy-5-oxotetrahydrofuran-3-yl)acetic acid (<B>1</B>), glutaric acid (<B>2</B>), succinic acid (<B>3</B>), nicotinic acid (<B>4</B>), (<I>E</I>)-4-hydroxyhex-2-enoic acid (<B>5</B>), cholesterol (<B>6</B>), 7-hydroxycholesterol (<B>7</B>), uridine (<B>8</B>), glycerol (<B>9</B>), 5-(hydroxymethyl)-2-methoxybenzene-1,3-diol (<B>10</B>), (5<I>E</I>,7<I>E</I>)-9-oxodeca-5,7-dienoic acid (<B>11</B>), (<I>Z</I>)-3-ethylidene-4-methylpyrrolidine-2,5-dione (<B>12</B>), dehydrovomifoliol (<B>13</B>), loliolide (<B>14</B>), cholesteryl stearate (<B>15</B>), palmitic acid (<B>16</B>), <I>cis</I>-5,8,11,14,17-eicosapentaenoic acid (<B>17</B>) and α-linolenic acid (<B>18</B>) on the basis of spectroscopic and chemical evidences. Their anticholinesterase and antioxidant activities were evaluated <I>via</I> inhibitory activities on acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) as well as scavenging activities on 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical and peroxynitrite (ONOO<SUP>−</SUP>). All isolated compounds (<B>1</B>—<B>18</B>) exhibited moderate AChE inhibitory activities with IC<SUB>50</SUB> values ranging from 1.14—12.50 μg/ml, whereas <B>1</B>, <B>7</B>, <B>9</B>, <B>17</B>, and <B>18</B> showed mild BChE inhibitory activities with IC<SUB>50</SUB> values ranging from 5.57—15.89 μg/ml. Although most of the compounds isolated were lacking the scavenging activity on DPPH radical and ONOO<SUP>−</SUP>, <B>5</B> and <B>10</B> showed good DPPH radical scavenging activity, and <B>5</B>, <B>10</B>, and <B>16</B> showed potent ONOO<SUP>−</SUP> scavenging activity.</P>