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요추부 경추간공 경막외 차단 중 관찰된 박동성 경막하 조영상 -증례 보고-
문신영,차영덕,임대진,양기환,이두익 대한마취통증의학회 2011 Anesthesia and pain medicine Vol.6 No.1
Transforaminal lumbar epidural block is a common procedure for the patients with back pain and radiating pain. But during the procedure, complications such as subdural or intrathecal block can occur. Because the procedure is conducted with contrast media and fluoroscopy, anesthesiologists must have deep understanding of the normal radiologic findings of epidural, subdural and intrathecal contrast images. During attempted transforaminal lumbar epidural block with fluoroscopy, we observed an unusual shaped pulsatile contrast image accidentally. Based on our experience, we report the subdural contrast image during transforaminal lumbar epidural block in radiologic aspects. (Anesth Pain Med 2011; 6: 24∼27)
申榮文,崔世千 단국대학교 대학원 1985 學術論叢 Vol.9 No.-
To synthesize azetidine derivatives in cyclization reaction was conducted by treatment of dihalo componnds, (dichloropropane or dibromocompounds) with t-butylamine. Even though the cyclization was difficult, it was found bromine compound reacts much readily than chlorocompound, probably due to the difference of the polarizability between these compounds during the nucleaphilic substitution reaction. The yield was further improved by using three times as much as the equivalent mode ratio of t-butylamine.
작은 헤테로고리 화합물의 산화이전 및 분해반응에 관한 연구 : Azetidine 유도체를 중심으로 Azetidine N-oxide
申塋文 단국대학교 대학원 1986 學術論叢 Vol.10 No.-
Oxidation of N-t-butylazetidine derivatives was performed at -30℃ in chloroform followed by its increase up to room temperature. It was found that azetidine N-oxides formed are not stable at room temperature and the decomposition of the compounds always provides t-butyl nitroso compound which is easily characterized by its blue color regardless of alkyl substituents at the neighboring ring carbon of nitrogen. The hydrogen-transfer reaction which is more favorable for alkyl substitution at ring carbon of aziriding N-oxides was failed probably due the lack of coplanar formation between N-oxide bond and the other bond formed between a neighboring ring carbon of nitrogen and alkyl substituted carbon of azetidines. The rate of oxidation of the unsubstituted azetidine was absorbed to the faster than that substituted azetidine probably due to the fact that of nuclearphilic attack of unshared election pair of nitrogen is much hindered by the bulky alkyl group.