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새로운 1,2-Diazepino[3,4-b]quinoxaline과 Pyridazino[3,4-b]quinoxaline
김호식,정극,Kim, Ho Sik,Jeong, Geuk 대한화학회 1999 대한화학회지 Vol.43 No.3
Quinoxaline 4-oxide 10을 2-chloroacrylonitrile과 반응시켜 1,3-쌍극성 고리화 첨가반응으로 2,3-dihydro-1H-1,2-diazepino[3,4-b]quinoxaline류 11a, b를 합성하였고, 이들을 2,3,4,6-tetrahydro-1H-1,2-diazepino-[3,4-b]quinoxaline 12로 변환시켰다. 그리고 ??嵐?11a를 아세트산/물 용매에서 SeO2와 반응시켜서 고리변환에 의해 1,4-dihydro-4-oxopyridazino[3,4-b]quinoxaline 13을 합성하였다. The 1,3-dipolar cycloaddition reaction of the quinoxaline 4-oxide 10 with 2-chloroacrylonitrile gave the 2,3-dihydro-lH-1,2-diazepino[3,4-blquinoxalines lla, b, respectively, which were converted into the 2,3,4,6-tetrahydro-lH-l,2-diazepino[3,4-b]quinoxaline 12. The reaction of compound lla with selenium dioxide in acetic acid/water resulted in ring transformation to give the 1,4-dihydro-4-oxopyridazino[3,4-blquinoxaline 13.
새로운 1,2-다이아제피노 [3,4-b]퀴녹살린류와 피리다지노 [3,4-b]퀴녹살린류의 합성
김호식(Ho Sik Kim),이성욱(Seong Uk Lee),정극(Geuk Jeong),이만길(Man Kil Lee),Yoshihisa Kurasawa 대한약학회 2000 약학회지 Vol.44 No.4
The 1,3-dipolar cycloaddition reaction of the quinoxaline 4-oxides 2 with 2-chloroacrylonitrile gave the 2,3-dihydro-1H-1,2-diazepino[3,4-b]quinoxalines 3, which were converted into the 2,3,4,6-tetrahydro-1H-1,2-diazepino[3,4-b]quinoxalines 5-7. The reaction of compounds 3 with selenium dioxide in acetic acid/water resulted in ring transformation to give the 1,4-dihydro-4-oxopyridazino[3,4-b]quinoxalines 8.
2-Hydroxy-7(or 8)-nitrophenazine-5,10-dioxide의 合成과 抗菌性
金浩植,鄭謚朱,金東一,鄭克,韓盛旭,倉澤嘉久 대구효성가톨릭대학교 자연과학연구소 1996 基礎科學硏究論集 Vol.10 No.-
2-Hydroxy-7(or 8)-nitrophenazine-5,10-dioxide(14) was synthesized by the reaction of hydroquinone with 5(or 6)-nitrobenzofuroxan(13) which had been obtained from 4-nitroaniline. And 2-hydroxyphenazine-5,10-dioxide(16) was prepared by the reaction of hydroquinone with benzofuroxan(15). The antibacterial activities of these phenazine dioxides were investigated in terms of minimum in-hibitory concentration by the common twofold dilution technique. It was observed that the antibacterial activity of phenazine dioxide bearing electron releasing substituent was stronger that of bearing electron withdrawing substituent.