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박정일(Jeong Hill Park),신준수(Joon Su Shin),김박광(Bak Kwang Kim),신영아(Young Ah Shin),문동철(Dong Cheul Moon) 한국응용약물학회 1996 Biomolecules & Therapeutics(구 응용약물학회지) Vol.4 No.3
We have synthesized the cinnamyl derivative of minoxidil, N-2-cinnamylamino-4-amino-6-piperidinopyrimidine 3-oxide(MINAMYL). Physicochemical properties and structural analysis on this compound were examined. And also, we have screened its antialopecic effect.
박정일(Jeong Hill Park),신영근(Young Geun Shin),신언경(Un Kyung Shin),백선경(Sun Kyung Baek),이승기(Seung Ki Lee),정명희(Myung Hee Chung),박영인(Young In Park) 대한약학회 1997 약학회지 Vol.41 No.4
To isolate biologically active compounds which exhibit tyrosinase inhibition activity and ultimately express skin whitening effect, 14 oriental herbal drugs were screened in terms of tyrosinase inhibition. For this purpose, in vitro enzyme assay system for tyrosinase, so called Pomerantz method with some modifications has been established. Crude methanolic extracts from 14 herbal drugs were made and examined for their inhibitory activity against tyrosinase. Those extracts fromCnidii Rhizoma, Arecae Semen, Caryophylli Flos, and Ephedrae Herba showed strong inhibitory activities on mushroom tyrosinase. Therefore, crude methanolic extracts from those 4 herbal drugs were further fractionated using ether, butanol and water. respectively. The ether and n-butanol extracts from Arecae Semen and the n-butanol and water extracts from Caryophylli Flos, respectively, showed relatively strong tyrosinase inhibitory activity compared to arbutin.
박만기(Man Ki Park),박정일(Jeong Hill Park),이미영(Mi Young Lee),박인정(In Jeong Park),김수웅(Su Ung Kim),이승룡(Seung Yong Lee),정훈(Hoon Jeong),이준우(Junn Woo Lee),한만덕(Man Deuck Han) 한국응용약물학회 1994 Biomolecules & Therapeutics(구 응용약물학회지) Vol.2 No.3
G009, isolated from the mycelia of Ganoderma lucidum, has been reported as a potent liver-protecting compound. To characterize this compound, its physicochemical properties were studied. The average molecular weight of the most abundant constituent of G009 was 9.4 kD. The contents of carbohydrate and protein in G009 were 70% and 12.4%, respectively. The main carbohydrate constituents were glucose, xylose, mannose and galactose. Seventeen kinds of amino acid were detected. The contents of carbon, hydrogen, and nitrogen were 40, 5.7, and 1.8%, respectively. Ca, Mg, Zn were also determined.
지모(Anemarrhena asphodeloides Bunge)의 근경으로부터 Anemarsaponin B의 분리 및 함량분석
이주미,이승호,박정일,강신정,장승엽,이경순,손건호,Lee, Joo-Mi,Lee, Seung-Ho,Park, Jeong-Hill,Kang, Shin-Jung,Chang, Seung-Yeup,Lee, Kyong-Soon,Son, Kun-Ho 한국생약학회 1999 생약학회지 Vol.30 No.2
A method for isolation and qantitative determination of anemarsaponin B from the rhizomes of Anemarrhena asphodeloides has been developed. Isolation of anemarsaponin B was achieved by silica gel and RP-18 column chromatography. The HPLC method for quantitative determination of anemarsaponin B provided a method for standardization of the crude drug. It suggested that the content of anemarsaponin B in Anemarrhena asphodeloides is about 0.12-1.48%.
고속액체크로마토그래피에 의한 알로에 제제 중의 알로에신의 정량
김경호,김현주,박정일,신영근,Kim, Kyeong-Ho,Kim, Hyun-Ju,Park, Jeong-Hill,Shin, Young-Geun 대한약학회 1996 약학회지 Vol.40 No.2
The contents of aloesin in aloe preparations were determined by HPLC. Aloesin was extracted 3 times with ethanol for 30 minutes. The ethanol extract was concentrated and suspend ed in saturated NaCl aqueous solution and successively partitioned with dichloromethane, n-butanol. Prepared samples were analyzed by HPLC on a reverse column(Inertsil ODS-2). In assay, internal standard was a puerarin and regression of calibration curve was 0.998. Recoveries of aloesin added to aloe preparation were 98~123(%).
단삼(Salvia miltiorrhiza Bunge)으로 부터 Tanshinone IIA의 분리 및 함량분석
박미정,이승호,박정일,강신정,장승엽,이경순,손건호,Park, Mi-Jung,Lee, Seung-Ho,Park, Jeong-Hill,Kang, Shin-Jung,Chang, Seung-Yeup,Lee, Kyong-Soon,Son, Kun-Ho 한국생약학회 1999 생약학회지 Vol.30 No.2
The rhizomes of Salvia miltiorrhiza Bunge(Labiatae) has been used in Chinese traditional medicine for the treatment of coronary heart diseases and myocardial infarction. As a part of a research for standardization of crude oriental drugs, we have determined the content of tanshinone IIA in Salvia miltiorrhiza purchased from various regions of Korea. The HPLC method by which quantitative analysis was conducted, showed reproducible results and chromatographic isolation of tanshinone IIA was accomplished successively.
우슬로부터 20-Hydroxyecdysone의 분리 및 함량분석
황지현,이승호,박정일,강신정,장승엽,이경순,손건호,Hwang, Ji-Hyun,Lee, Seung-Ho,Park, Jeong-Hill,Kang, Shin-Jung,Chang, Seung-Yeup,Lee, Kyong-Soon,Son, Kun-Ho 한국생약학회 1999 생약학회지 Vol.30 No.3
Separation and quantitative determination of 20-hydroxyecdysone from Achyranthis Radix has been conducted by using HPLC method. 20-hydroxyecdysone in a methanol extract from the raw drug was separated on a reverse phase column using a $CH_3CN-H_2O\;(18:82)$ solvent system and the average content is $0.0931{\pm}0.0048%$. For the preparation of authentic standard, we isolated 20-hydroxyecdysone from the roots of Achyranthes fauriei by $SiO_2$ and RP-18 column chromatography.