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1-Chloro-1-phenyl-2-carboethoxy-2-cyanoethene 유도체에 대한 thioglycolic acid 치환제의 합성
이영행,이채호,이갑상,이만구 圓光大學校 1984 論文集 Vol.18 No.2
The substitution products of thioglycolic acid to the derivatives of 1-chloro-1-phenyl-2-carboethoxy-e-cyano ethene synthesized 1-Chloro-1-phenyl-2-carboethoxy-2-cyanoethene [Ⅴ], 1-chloro-10(4-chlorophenyl)-2-carboethoxy-2-cyanoethene[Ⅳ] and 1-chloro-1-(4-methoxyphenyl)-2-carboethoxy-2-cyanoethene[Ⅶ] undergo substitution reactions with thioglycolic acid to form s-[(1-phenyl-2-carboethoxy-2-cyano) ethenyl]-thioglycolic acid s-[(1-(4-chlorophenyl)-2-carboethoxy-e-cyano] ethenyl]-thioglycolic acid and s-[1-(4-methoxyphenyl)-2-carboethoxy-2-cyano] ethenyl]-thioglycolic acid, respectively. The structure of products were identified by elemental analysis, potentiometric titration, infrared and nmr spectra.
새로운 의약품의 합성에 관한 연구 : 6-Thiocyanopenicillanic Acid 유도체의 합성
李英行,李寀浩,崔元植 원광대학교기초자연과학연구소 1992 基礎科學硏究誌 Vol.11 No.3
6-Aminopenicillanic acid의 diazo화 반응과 sodium thiocyanate와 반응으로 새로운 β-lactam 화합물인 6-thiocyanopenicillanic acid(1a)를 합성하고 p-nitrobenzyl bromide, chloromelthylpivalate 및 1-chlorodiethylcarbonate들과의 반응에 의해 각각에 해당하는 ester(1b~d)를 합성하였다. A new β-lactam compound, 6-thiocyanopenicillanic acid(1a) was prepared by the reaction of diawnium salt of 6-aminopenicillanic acid with sodium thiocyanate. Reaction of 6-thiocyanopenicillanic acid(la) with p-nitrobenzyl bromide, chloromethylpivalate and l-chlorodiethylcarbonate, respectively, afforded the corresponding esters(1b~d).
李寀浩,李英行 圓光大學校 1982 論文集 Vol.16 No.2
Trimethoprim은 그람음성균과 변형균에 대하여 광범위한 항균력을 가진다. Trimethoprim은 흔히 3,4,5-trimethoxybenzaldelyde를 출발물질로 사용하여 합성되며 그 합성자체가 복잡하고 어려운 점이 많다. 이러한 어려운 점을 피하기 위하여 3,4,5-trimethoxybenzoic acid를 출발물질로 사용하였으며 그의 acid chloride와 ethyl cyanoacetate나 diethyl malonate를 축합시켜서 Trimethoprim의 중간체인 diethyl 3,4,5-trimethoxybenzolymalonate와 diethyl 3,4,5-trimethoxybenzylmalonate를 합성하였다. Trimethoprim has a moderately broad antibacterial spectrum which includes many of the gram-negative species. This compound has always been synthesized starting from 3,4,5-trimethoxy benzaldebyde, but the synthesis of the starting material itself were very complicated and tedious. To avoid these difficulties, we used 3,4,5-trimethoxybenzoic acid as starting material and attempted to condense ethyl cyanoacetate and diethyl malonate with 3,4,5-trimethoxybenzoyl chloride. As a result, the intermediates for the synthesis of trimethoprim, diethyl 3,4,5-trimethoxybenzoylmalonate and diethyl 3,4,5-trimethoxybenzylmalonate were synthesized.
이영헌,조학행,이흥수,허정 조선대학교 외국문화연구소 1980 外國文化硏究 Vol.3 No.1
표준이론(Standard Theory)에 있어서 한 문장의 의미해석은 오직 심층구조에 의해서만 가능하였다. 그러나 어떤 문장에 있어서는 심층구조의 정보만으로는 그 문장이 지니고 있는 모든 의미를 나타내주지 못하는 경우가 있기 때문에 표층구조에서도 의미해석을 하여야 할 경우가 생긴다. 이와 같은 문법기술의 궁극적 목표인 의미해석에 밝은 전망을 주지 못하는 표준이론은 확대표준이론으로 발전되었다. 확대표준이론(Extended Standard Theory)에 의하면 한 문장의 의미해석은 심층구조와 표층구조를 모두 다 들여다 보아야 가능하다. 그러므로 의미해석의 정보를 심층구조에서 뿐만 아니라 표층구조에서도 택하여야 한다면, 어떤 정보는 심층구조에서 얻어야 하고, 또 어떤 정보는 표층구조에서 얻어야 할 것이냐 하는 문제가 생긴다. 다시 말하면 심층조와 표층구조가 제공하는 정보의 구별에 따르는 문제가 생기는 의미해석의 문제도 그만큼 복잡해진다. 뿐만 아니라 두 구조가 제공하는 정보에 의한 의미해석이 복잡해짐에 따라 의미가 동일한 두 문장과 한 문장이 두개 이상의 의미를 지녔을 경우의 의미해석은 더욱 어려운 문제가 된다.
Crystal Violet의 Dimerization에 關한 吸收分光學的 硏究
李弘,李英行 圓光大學校 1981 論文集 Vol.15 No.1
The dimerization constant of crystal violet in aqueous solution has been determined by the absorption spectroscopic method and also the empirical absorption curves of its monomeric and dimeric states were presented. These calculated spectra of pure species were used for the comparison of the experimental results with the theoretical expectation.
이계행,원영두 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.1
This study was designed to investigate the effects of long-term training on the lipid(triglyceride, cholesterol) and lipoprotein(HDL-cholesterol).The subjects consisted of 14junior female athletes(exercise career, three month 1 A group) and 14 athletes(exercise career fifteen month ; B group) and 14 junior school girls as control group(C group) who all were about thirteen years old, Both athlete groups(A,B group) were continuous to participate in six month training and their blood samples were collected at pre mid(after three month) and post(after six month). The control subjects donated their blood at pre and post(after six month). The collected blood were analyzed for the triglyceride, cholesterol, High density lipopro -tein cholesterol and HDL-C/TC ratio. The result through the statistical analysis of this data were summarized as follows The pre-levels of triglyceride and total cholesterol in Athlete group, especially Bgroup were lower than those in Non-athlete group(p<.01). level and HDL C/TC ratio were highest in B group among three group(p<.05). HDL-C level and HDL-C/TC ratio in both athlete group, especially A group were significantly decreased after three and six month(p<.01) while in control group all item were not changed. The result indicated that Triglyceride cholesterol in pre-adolescent girl can be significantly changed by three month training and the change of need more long term training.
N-Isoprophyliminotriphenylphosphorane과 Benzaldehyde 유도체와 반응
李英行,李晩求,金基炫 圓光大學校 基礎自然科學硏究所 1986 基礎科學硏究誌 Vol.5 No.2
The reactions of N- sopropyliminotriphenylphosphorane with benzaldehyde derivatives were investigated by GC. The reaction were completed within 8hours at an approximate reaction condition. The reactivity of benzaldehyde was in order, Ar=p-NO_2>p-Cl>p-Br>H>p-CH_3>p-CH_3O> and Ar=p-C_2H_5O, consistant with the Wittig mechanism. The reactivity of iminophosphorane increased with the change of reaction solvent from benzene to ethanol.
Diethyl 3,4,5, - Trimethoxybenzylmalonate의 새로운 합성법
李茶浩,李英行,李晩求,蔡奎允 圓光大學校 1984 論文集 Vol.18 No.2
3,4,5 - Trimethoxybenjoyl chloride 와 diethyl malonate를 축합시키고 이어서 염소화반응 및 수소화반응에 의하여 70%의 수득률로서 diethyl 3,4,5 - trimethoxybenzylmalonate를 얻었다. direct condensation of 3,4,5 - trimethoxybenzoyl chloried with diethyl malonate followed by chlorination and hydrogenation afforded diethyl 3,4,5 - trimethoxybenzylmalonate in 70% overall yield.