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Partial Structure of Panax Saponin C
Byung Hoon Han(한병훈),Yong Nam Han(한용남) 한국생약학회 1972 생약학회지 Vol.3 No.4
전보에서 저자들은 인삼의 anti-inflammatory activity를 추적하여 Panax saponin A 및 C로 명명된 dammalene계 glycoside를 분리하였고 A에 대해서는 이미 그 화학구조를 밝혀 보고한바 있다. 본보에서는 Panax sapenin C(PS-C)의 부분 화학구조를 밝혀 보고코자 한다. PS-C는 산분해하면 panaxatriol 1 ㏖, glucose 2 ㏖ 및 rhamnose 1 ㏖을 생성하고, acetylation하면 dodeca-acetate를 형성한다. 따라서 protopanaxatriol의 20[s]-수산기는 glycoside결합에 참여하고있다. PS-C는 6㏖의 HIO₄를 소모하고 permethylate에 대한 methanolysis product를 GLC로 분석한 결과 2, 3, 4-trimethoxy-methyl-rhamnoside 1 ㏖과 2,3,4,6-tetramethoxy-α-methyl glucoside 2㏖이 생성되므로 PS-C 중에 존재하는 3 ㏖의 sugar는 oligoside 결합에 의하지 않고 monoside결합에 의하여 연결되어 있고 glucose는 β-glycoside 결합을 하고 있음을 의미한다.
한병훈(Byung Hoon Han),박명환(Myung Hwan Park),한용남(Yong Nam Han) 한국생약학회 1982 생약학회지 Vol.13 No.4
From the saponin fraction of Korean ginseng two UV-absorption compounds were isolated in a crystalline state and identified as Isomaltol-α-D-glucoside and Adenosine by the chemical and spectral analysis, respectively. Present studies are concerned with the isolation of Adenosine by chromatographic process and its content in the ginseng.
자작나무 잎의 Triterpenoid 성분연구 - Triterpenoid 의 분리 및 동정
한병훈(Byung Hoon Han),지형준(Hyung Joon Chi),한용남(Young Nam Han) 한국생약학회 1973 생약학회지 Vol.4 No.4
Five crystalline substances, which are positive to LIEBERMAN-BU¨RCHARD reaction, were isolated from the unsaponifiable fraction of the fresh leaves of Betula latifolia KOMAROV (Betulaceae)by silica gel column chromatographic purification. Compound A (C<sub>29</sub>H<sub>50</sub>O, mp 136°), B (C<sub>30</sub>H<sub>52</sub>O<sub>3</sub>, mp 165°), C (C<sub>30</sub>H<sub>52</sub>O<sub>4</sub>, mp 237°), D (C<sub>30</sub>H<sub>52</sub>O<sub>3</sub>, mp 196°) and E (C<sub>30</sub>H<sub>52</sub>O<sub>4</sub>, mp 121°) were isolated. Compound B was characterized as a new tetracyclic triterpenoid. Compounds A, C and D were identified as β-sitosterol, betulatriterpene C, and betulafolienetriol, respectively.
한병훈(Byung Hoon Han),지형준(Hyung Joo Chi),한용남(Yong Nam Han),유경수(Kyung Soo Ryu) 한국생약학회 1972 생약학회지 Vol.3 No.4
Anti-inflammatory activity of crude drugs was evaluated by the albumin stabilizing activity test, according to the screening method of Mizushima et al., upon the randomly selected samples of 63 genus, 106 families, 123 species of plant. Almost every plant belonging to the families Araliaceae, Umbelliferae and Liliaceae showed strong stabilizing activity on the heat denaturation of bovine serum albumin, suggesting the presence of anti-inflammatory components in the plants.
한병훈(Byung Hoon Han),한용남(Yong Nam Han),양현옥(Hyun Ok Yang),유시응(Si Yong Ryu),박명환(Myung Hwan Park) 한국생약학회 1982 생약학회지 Vol.13 No.4
The development of Radioimmunoassay(RIA) for high-density lipoprotein(HDL) in Japanese quail serum will contribute to the screening of drugs acting on cholestrol transport. We have developed a double antibody RIA method for J. quail HDL. The antibody was raised in the rabbit by immunization of HDL isolated by dextrane sulfate-Mn^(++) precipitation method. For the preparation of radio-iodinated antigen, the HDL was further purified by combination of electrophoretic procedure. Using the second antibody raised in goat by rabbit IgG, we have furnished the RIA method far HDL. It showed high specificity and sensitivity of working assay range, 1.7∼24.0㎍/tube.
한병훈(Byung Hoon Han),박정일(Jeong Hill Park),박명환(Myung Hwan Park),한용남(Yong Nam Han) 한국생약학회 1985 생약학회지 Vol.16 No.1
Three β-carboline alkaloids were isolated from ether soluble alkaloid fraction of Lycii Fructues, which were identified as N_9 formylharman the (I), 1-carbomethoxy-β-carboline (II) and perlolyrine (III). The content of these alkaloids was determined by GLC as (I) =1.5 × 10^(-5)%, (II) =1.3 × 10-4% and (III) =2.8 × 10^(-4)%. One unidentified alkaloid (C_(10)H_(13)NO₂, content 7.3 × 10^(-4)%) was isolated and the structure elucidation is under progress.
대추나무 껍질의 Alkaloid성분에 관한 연구 (Ⅳ)
한병훈(Byung Hoon Han),박명환(Myung Hwan Park),한용남(Yong Nam Han) 한국생약학회 1985 생약학회지 Vol.16 No.1
대추나무껍질의 에텔가용성 alkaloid 분획으로부터 frangufoline, frangulanine, frangufoline, franganine, Daechuin-s3, -s5, -s6, -s7, -s8-1, -s10, -26, mucronin-D, nummularin-B를 분리 하여 보고한바 있다(대한약학회 제33회 총회 및 학술대회 초록집 pp.93-94, 1984). 이 분획에 대한 연구를 계속하여 Daechuin-s15 (mp 121℃, 수득율 3.4×10^(-4)%), Daechuin -s24 (mp 248-251℃, 수득율 6.5×10^(-5)%)을 분리하여 이화학적 반응과 spectra분석을 통하여 구조를 밝흰 결과 아래와 같이 추정되는 새로운 구조의 화합물이므로 보고한다.
산조인의 Alkaloid 성분 연구 (Ⅵ) : Amphibin D 의 분리 및 동정
한병훈(Byung Hoon Han),박명환(Myung Hwan Park),한용남(Yong Nam Han) 한국생약학회 1985 생약학회지 Vol.16 No.1
산조인으로부터 frangufoine, Sanjoinin-B, -D, -G<sub>1</sub>, -G<sub>2</sub>, Sanjoinene, nuciferine, nornuciferine, caverine, N-methylasimilobine, norisocorydine, coclaurine, zizyphusine을 분리 보고한바 있다. Alkaloid 분획으로부터 cyclopeptide alkaloid(무정형, [α]_D-201.5˚, 수득율 6.3×10^(-5)%)를 분리하여 이화학적 성상과 기기분석을 통하여 구조를 결정한 결과 Amphibine D로 동정하였다.
한병훈(Byung Hoon Han),한용남(Yong Nam Han) 한국생약학회 1978 생약학회지 Vol.9 No.4
The repeated administration of the cherry bark extract and its some fractions suppressed profoundly the antibody production in mice which were immunized with bacterial α-amylase.