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심현관,문성훈 釜山水産大學校 1985 釜山水産大學 硏究報告 Vol.25 No.2
염 및 변성제가 카탈라아제의 열응고에 미치는 효과를 실험한 결과 다음과 같은 결과를 얻었다. 1. 염의 첨가는 카탈라아제의 열응고를 촉진시킨다. 2. 염의 종류별 효과는 단백질의 이액순열을 따른다. 3. 구아니딘염산은 염과 유사한 효과를 보인다. 4. SDS 및 urea는 열응고를 억제시킨다. 5. 단백질의 열응고 과정은 소수성결합과 밀접한 연관이 있을 것으로 추정된다. Thermal coagulation of catalase was investigated with regard to the effects of salts and denaturants. The formation of thermal coagulum of catalase was enhanced by the addition of salts, and the effect of salts followed the lyotropic series. Guanidine hydrochloride enhanced the coagulum formation in a manner similar to that of salts. Sodium dodecyl sulfate and urea suppressed the thermal coagulation. The mechanism of thermal coagulation can be surmised from the standpoint of hydrophobic interaction between nonpolar amino acid residues.
문성훈,심현관 釜山水産大學校 1984 釜山水産大學 硏究報告 Vol.24 No.2
In order to obtain 6-(ethoxymethyleneamino) purine, which is a useful intermediate for the synthesis of 6-substituted aminopurine, the reaction of adenine with diethoxymethyl acetate was attempted. The product was analyzed by thin layer chromatography and it was found that the product was apt to be converted to side products slowly. Separation of the product was carried out by silica gel column chromatography. By the reason of substitution with methanol which is used as chromatographic solvent, 6-(methoxymethyleneamino) purine was obtained. The product was identified by FT-NMR, UV, and IR Spectroscopic studies, and then it was found that the product was composed of syn-and anti-isomers as a mixture.
Synthesis of meso-Tetraphenyl-21,23-dioxaporphyrin
Kim, Yeong-Il,Shim, Hyun-Kwan,Oh, Yung-Hee 釜慶大學校 1996 釜慶大學校 論文集 Vol.1 No.2
Porphyrin의 중심의 질소원자 중에서 두 개를 산소원자로 치환시킨 tetraphenly-21, 23-dioxaporphyrin을 합성하였다. AlCl₃ 촉매하에서 benzene을 Friedel-Graft furoylation 시켜 2-benzoylfuran을 얻었고, 계속하여 SnCl₄ 촉매하에서 benzoylation에 시켜 2, 5-dibenzoylfuran을 얻었다. 이것을 NaBH₄로 환원시키면 dioxaporphyrin의 합성에서 가장 중요한 중간체인 2, 5-bis(phenylhydroxymethyl)furan이 얻어진다. 산촉매하에서 pyrrole과 축합시키고, 계속하여 산화시켰더니 tetraphenyl-21, 23-dioxaporphyrin이 얻어졌다.