Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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A Study on the Reactions of Diamines with 2,5-Dimethoxytetrahydrofuran and 1,3-Acetonedicarboxylic Acid

1,3-Acetonedicarboxylic acid와 2,5-dimethoxytetrahydrofuran에 의한 diamine들의 반응에 관한 연구

  • Published : 2006.04.01
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Abstract

In order to synthesize novel anticonvulsants, we researched that the reactions of diamines with 2,5-dimethoxytetrahydrofuran and 1,3-acetonedicarboxylic acid. The reaction of ethylenediamine with 2,5-dimethoxytetrahydrofuran and 1,3-acetonedicarboxylic acid afforded 8-(2-pyrrol-1-yl-ethyl)-8-aza-bicyclo[3,2,1]octan-3-one (yield; 5.0%) and 1,2-di-(8-aza-bicyclo[3,2,1]octan3-onyl)ethane (yield; 17.0%). In case of 1,3-diaminopropane, 8-(3-pyrrol-1-yl-propyl)-8-aza-bicyclo[3,2,1]octan-3-one(yield; 6.0%) and 1,3-di-(8-aza-bicyclo[3,2,1]octan-3-onyl)propane (yield; 21.0%) were obtained. In case of 1,8-diaminooctane, 8-(8-pyrrol-1-yl-octyl)-8-aza-bicyclo-[3,2,1]octan-3-one (yield; 2.6 %) and 1,8-di-(8-aza-bicyclo[3,2,1]octan-3-onyl)octane (yield; 24.9%) were obtained. In diaminobenzene reactions, synthetic yields of 8-aza-bicyclo-[3,2,1]octan-3-one derivatives were higher than those of pyrrole derivatives because re actions were done under room temperature. The longer the carbon chain of diaminoalkane is, the more reactive N atom is due to more electron donating effect, and the less steric hindrance around the carbon gave the higher chemical yields. The reaction of p-phenylenediamine as a diaminobenzene with 2,5-dimethoxyte-trahydrofuran and 1,3-acetonedicarboxylic acid produced p-dipyrrolylbenzene (yield; 4.0%), 8-(4-pyrrol-1-yl-phenyl)-8-aza-bicyclo[3,2,1]octan-3-one (yield; 12.0%), and 1,4-di-(8-aza-bicyclo[3,2,1]octan-3-onyl)benzene (yield; 59.0%). In case of m-phenylenediamine, 8-(3-pyrrol-1-yl-phenyl)-8-aza-bicyclo[3,2,1]octan-3-one(yield; 2.0%) and 1,3-di-(8-aza-bicyclo[3,2,1]octan-3-onyl)benzene (yield ; 28.0%) were obtained. But, synthesis of 1,2-di-(8-aza-bicyclo[3,2,l]octan-3-onyl)benzene by treatment of o-phenylenediamine was not successful, presumably due to the steric hindrance of 8-aza-bicyclo-[3,2,1]octan-3-one rings.

본 연구를 통해 항 경련 활성을 보이는 8-aza-bicyclo[3,2,1]octan-3-one 구조를 모체로 하여 생리활성 및 구조적 특이성을 가진 8-aza-bicyclo[3,2,1]octan-3-one 화합물을 합성하고자 하였다. 본 논문에서는 ethylenediamine 1을 2,5-dimethoxyte-trahydrofuran과 1,3-acetonedicarboxylic acid을 반응시켜 8-(2-pyrrol-1-yl-ethyl)-8-aza-bicyclo[3,2,1]octan-3-one 2(yield ; 5.0%)와 1,2-di-8-aza-bicyclo[3,2,1]octan-3-onyl)ethane 3(yield ; 17.0%)을 합성하였다. 1,3diaminopropane 4의 경우에는, 8-(3-pyrrol-1-yl-propyl)-8-aza-bicyclo[3,2,1]octan-3-one 5(yield ; 6.0%)와 1,3-di-8-aza-bicyclo[3,2,1]octan-3-onyl)propane 6 (yield; 21.0%)을, 그리고 1,8-diaminooctane 7의 경우에는 8-(-8-pyrrol-1-yl-octyl)-8-aza-bicyclo[3,2,1]octan-3-one 8(yield; 2.6%)과 1,8-di-8-aza-bicyclo[3,2,1]octan-3-onyl)octane 9(yield; 24.9%)를 합성할 수 있었다. Diaminoalkanes(1,.4, 7)의 반응에서 보면 실온에서 반응을 진행시켰기에 pyrrole 유도체보다는 8-aza-bicyclo[3,2,1]octan-3-one 유도체의 합성이 보다 유리한 결과를 나타냈다. 그리고 탄소 chain이 길수록 N 원자에 전자를 잘 밀어주어 활성이 더 좋았으며 탄소 steric effect도 작기 때문에 생성물의 yield가 더 높았다. Diaminobenzene(10, 14) 역시 diaminoalkane의 반응과 같이 p-phenylenediamine 10을 2,5-dimethoxytetrahydrofuran, 그리고 1,3-acetonedicarboxylic acid과 반응시켜 p-dipyrrolylbenzene 11(yield; 4.0%), 8-(4-pyrrol-1-yl-phenyl)-8-aza-bicyclo[3,2,1]octan-3-one 12(yield; 12.0%), 1,4-di-(8-aza-bicyclo[3,2,1]octan-3-onyl)-benzene 13(yield; 59.0%)을 합성하였고, m-phynylenediamine 14의 경우에도 8-(3-pyrrol-l-yl-phenyl)-8-aza-bicyclo[3,2,1]octan-3-one 15(yield; 2.0%)와 1,3-di-(8-aza-bicyclo[3,2,1]octan-3-onyl)-benzene 16(yield; 28.0%)을 합성할 수 있었다. 그러나 o-phynylenediamine 17의 경우에는 8-aza-bicyclo[3,2,1]octan-3-one ring들의 steric hindrance의 영향에 의해 1,3-di-8-aza-bicyclo[3,2,1]octan-3-onyl)benzene은 합성되지 않았다.

Keywords

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