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N-Chlorodibenzenesulfonimide를 이용한 알코올의 산화반응에 관한 연구
이영행,채규윤,박규종 圓光大學校 基礎自然科學硏究所 2000 基礎科學硏究誌 Vol.18 No.1
Methanol 용액에서 dibenzenesulfonimide와 t-butylhypochlorite를 과량 반응시켜 N-chlorodibenzensulfonimide를 합성하였다. 합성된 N-chlorodibenzenesulfonimide를 dichloromethane 용매하에 실온에서 tetra-n-butylammonium bromide와 함께 사용함으로써 알코올의 효율적인 산화제임을 알 수 있었다. N-chlorodibenzensulfonimide was prepared by reaction of dibenzenesulfonimede with t-butylhypochlorite in methanol. The reagent combination of N-chlorodibenzensulfonimide/tetra-n-butylammonium bromide in dichloromethane is an efficient oxidant of alcohols under neutral. room temperature conditions.
3-[(4-카르복시-3-히드록시이소티아졸-5-일)티오메틸] 세파로스포린 유도체들의 합성 및 항균력
이영행(Young Haeng Lee),박규종(Kyu Jong Park),김하정(Ha Jung Kim),최원식(Won Sik Choi) 대한약학회 1998 약학회지 Vol.42 No.4
New cephalosporin antibiotics. 7-[(1H-tetrazolyl)acetamidol]-3-[(4-carboxy-3-hydroxyisothiazol-5-yl)thiomethyl-3-cephem-4-carboxylic acid trisodium salt 2,7-[(5-ethylthio-3-hydroxyisothiazol-4-yl)carbox-amidol-3-[(4-carboxy-3-hydroxyisothiazo1-5-yl)thiomethyl)-3-cephem-4-carboxylic acid 3,7-[(2-aminothiazol-4-yl)acetamido]-3-[(4-carboxy-3-hydroxyisothiazol-5-yl]thiomethyl]-3-cephem-4-caboxylic acid 4,7-[(Z)-2-(2-aminothiazol-4-yl)-2-(alkoxyimino)acetamido)-3-[(4-carboxy-3-hydroxyisothiazol-5-yl)thiomethyl)-3-cephem-4-carboxylic acid 5-9 were synthesized. Antibacterial activities of these new cephalosporin derivatives and the relationship between their structures and activities were examined. Among them, 7-((Z)-2-(2-aminothiazol-4-yl)-2-(carboxymethoxyimino)acetamido)-3-[(4-carboxy-3-hydroxyisothiazol-5-yl)thiomethyl)-3-cephem-4-carboxylic acid 8 and 7-[(Z)-2-(2-aminothiazol-4-yl)-2-(l-carboxy-1-methylethoxyimino)acetamido]-3-[(4-carboxy-3-hydroxyisothiazol-5-yl)thiomethyl)-3-cephem-4-carboxylic acid 9 exhibited good antibacterial activities compared with those of cefotaxime and ceftriaxone.