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Ethylenediamine-N,N'-di-${\alpha}$-Isobutyric Acid의 코발트(III) 착물
전무진,한창윤,박장우,최승락,박광하,Moo-Jin Jun,Chang-Yoon Han,Chang-Woo Park,Sung Rack Choi,Kwang-Ha Park 대한화학회 1986 대한화학회지 Vol.30 No.1
주게원자가 ONNO인 새로운 네자리 리간드인 ethylenediamine-N,N'-di-${\alpha}$-isobutyric acid(eddib)를 합성하고 이 리간드의 디클로로 코발트(III)착물을 공기산화법에 의하여 합성하였다. Eddib리간드가 코발트(III)이온에 배위될 때 S-cis이성체만이 선택적으로 만들어짐이 관찰되었는데 이것은 ring strain과 steric hinderance 때문이다. 그리고 eddib의 디클로로 코발트 (III)착물을 용액중에서 $[Co(eddib)L]^{n+}$ $(L = Cl{\cdot}(H_2O),\;CO_3^{2-},\;(H_2O)_2)$로 치환반응을 시켰을 때 이들의 흡수 스펙트럼의 흡수띠 위치가 분광학적계열과 일치함을 알 수 있었다. 합성된 착물의 구조는 원소분석, 적외선 흡광분석법, 핵자기 공명 및 전자흡수 스펙트럼으로 확인하였다. A newflexible $N_2O_2$-type tetradentate ligand. Ethylenediamine-N,N'-di-${\alpha}$-isobutyric acid(eddib), has been synthesized, and dichloro cobalt(III) complex of eddib has been prepared via the air-oxidation technique. Only S-cis isomer has been yielded during the preparation of complex. Ring strain and steric hinderance are cited as the cause for the preference for the S-cis geometric configuration. On series of cobalt(III) complexes of eddib, $[Co(eddib)L]^{n+}$ $(L = Cl{\cdot}(H_2O),\;CO_3^{2-},\;(H_2O)_2)$have been prepared in situ. In their electronic absorption spectra, the absorption maxima and their intensities of the above series of complexes are on the ordinary line of the spectrochemical and hyperchromic series. Elemental analysis, IR, NMR and electronic absorption spectra have been used to characterize the complex and geometries of the complex.
Cobalt(III) Complex of Ethylenediamine-N,N'-di-S-${\alpha}$-Propionic Acid
전무진,박윤봉,한창윤,최승락,Moo Jin Jun,Yoon Bong Park,Chang Yun Han,Sung Rack Choi Korean Chemical Society 1985 대한화학회지 Vol.29 No.3
네자리 리간드인 ethylenediamine-N,N'-di-S-${\alpha}$-propionic acid (eddp)의 디클로로 코발트(III) 착물을 공기산화법에 의하여 합성하였다. eddp리간드는 코발트(III) 이온에 매우 입체선택적으로 배위하여 ${\Delta}$-S-cis 이성체만을 형성함이 관찰되었다. 합성된 착물의 구조는 원소분석, 적외선 분광분석법, 핵자기 공명 및 흡수스펙트럼으로 확인되었으며 특히 착물의 절대배열은 핵자기공명 스펙트럼으로 확인하였다. Dichloro cobalt(III) complex of a flexible tetradentate ligand of ethylenediamine-N,N'-di-S-${\alpha}$-propionic acid (eddp) has been prepared via the air-oxidation technique. Only ${\Delta}$-cis isomer has been yielded showing high stereoselectivity of the eddp ligand. Elemental analysis, ir, nmr and electronic absorption spectra have been used to characterize the complex and the absolute configuration of the complex is assigned by means of the nmr spectroscopy.
실험연구 : 흰쥐 횡격막 신경근 표본에서 Vancomycin이 비탈분극성 근이완제의 신경근 차단에 미치는 영향
김순임 ( Soon Im Kim ),한창윤 ( Chang Yoon Han ),정호순 ( Ho Soon Jung ),이정석 ( Jeong Seok Lee ),옥시영 ( Si Young Ok ),김선종 ( Sun Chong Kim ) 대한마취과학회 2006 Korean Journal of Anesthesiology Vol.51 No.6
Background: Vancomycin is frequently used as a prophylactic antibiotic in patients undergoing cardiac and orthopedic surgical procedures. However, the interactions of vancomycin with non-depolarizing muscle relaxant have not yet been reported on. Therefore, we studied the effects of vancomycin on the neuromuscular block of vecuronium, rocuronium and atracurium in vitro. Methods: Square wave, 0.1 Hz supramaximal stimuli were applied to the phrenic nerve-hemidiaphragm preparation of the rat and the twitch height response was recorded. We measured cumulative concentration response curves of vecuronium, rocuronium or atracurium, respectively, and also those of the rats that were pretreated with vancomycin (20μg/ml). The EC50 and EC95 of these muscle relaxants alone and those of the rats pretreated with vancomycin were calculated with using an inhibitory sigmoid Emax model. Results: Vancomycin alone did not depress the twitch height. The pretreated vancomycin (20μg/ml) did not affect the EC50 and EC95 of vecuronium or rocuronium, but it significantly reduced the EC50 and EC95 of atracurium (P < 0.05). Conclusions: Vancomycin itself does not have neuromuscular blocking properties. Vancomycin does not affect the neuromuscular blockade induced by vecuronium or rocuronium, but it significantly enhances the neuromuscular blockade induced by atracurium. (Korean J Anesthesiol 2006; 51: 727~32)
Ethylenediamine-N,N'-di-α-Butyric Acid의 로디움(Ⅲ) 착물
전무진,한창윤,박장우,최승락,박광하 연세대학교 자연과학연구소 1985 學術論文集 Vol.15 No.-
네자리 리간드인 ethylenediamine--N,N'-di-α-butyric acid(eddb)의 디클로로 로디움(Ⅲ)착물을 합성하고 크로마토그래피법으로 분리하였다. Eddb리간드가 로디움(Ⅲ) 이온에 배위될 때 s-cis와 uns-cis기하 이성체가 형성됨이 관찰되었다. 합성된 착물의 구조는 적외선 분광분석법, 핵자기 공명 및 흡수 스펙트럼으로 확인되었다. Dichloro rhodium(Ⅲ) complex of a flexible tetradentate ligand of ethylenediamine-N,N'-di-α-butyric acid(eddb) has been prepared and separated by the chromatographic method. S-cis and uns-cis geometric isomers have been yielded during the preparation of complex. IR, PMR and electronic absorption spectra have been used to characterize the complex.