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Yi Gi-Hwan,Choi Jun-Ho,Kim Kyung-Min,Jeong Eung-Gi,Park Hyang-Mi,Kim Doh-Hoon,Ku Yeon Chung,Eun Moo-Young,Kim Ho-Yeong,Nam Min-Hee The Plant Resources Society of Korea 2005 Plant Resources Vol.8 No.1
Lysine is the first essential amino acid for optimal nutrient quality in rice grain. For the narrow genetic diversities of lysine contents in rice, somaclonal variation was the source of mutation in our breeding program. Biochemical selection was conducted using 1 mM S-(2-aminoethyl) cysteine followed by two passages of 5 mM lysine plus threonine in the callus subculture medium. The lysine contents in endosperm of all progenies recovered from the biochemical selection were higher than those of their donor cultivar 'Hwayeongbyeo'. These elevated lysine levels of mutants were successfully transmitted to $M_4$ generation. The lysine contents in endosperm varied 3.85 to $4.80\%$ compare to their donor cultivar 'Hwayeongbyeo' was $3.85\%$. Three of high-lysine germplasms, Lys-l, Lys-2 and Lys-7 were selected by biochemical selection and rapid screening methods. DNA analysis showed that a new insertion of Tos 17 which mapped to rice chromosome 11 on the high-lysine mutant, Lys-2.
새로운 3-(α-Arylhydrazono)oxadiazolylmethyl-2-oxo-1 2-dihydroquinoxaline 誘導體의 合成과 토오토메리 現象에 관한 硏究
都理香,南順花,郭美玉,朴胎晝,姜一英,金浩植 대구효성가톨릭대학교 자연과학연구소 1991 基礎科學硏究論集 Vol.5 No.-
Abstract The reaction of 3-methoxycarbonylmethylene-2-oxo-1, 2, 3, 4-tetrahydro-quinoxaline with p-butylbenzenediazonium chloride gave n-arylhydrazonoester, whose reaction with hydrazine hydrate afforded α-arylhydrazonoacylhydrazide. The reaction of α-arylhydrazonoacylhydrazide with triethyl orthoformate resulted in the intramolecu-lar cyclization to give the 3-(α-(p-butylphenylhydrazono)-1,3,4-oxadiazol-2-ylmethyl)-2-oxo-1,2-dihydroquinoxaline, but not the 1, 2, 4, 5-tetrazepinylquinoxaline. The tautomericbehavior of 3-[α-(p-butylphenylhydrazono) methoxycarbonylmethyl]-2-oxo-1, 2-dihy-droquinoxaline and 3-[α-(p-butylphe nylhydrazono)-1, 3, 4- oxadiazol -2- ylmethyl ]-2-oxo-1,2-dihydroquinoxaline between the hydrazone imine and diazenyl enamine forms in the dimethyl sulfoxide solution was investigated on the basis of the tautomer ratio determined by the 1H-NMR spectral data.
새로운 1-Aryl-3-quinoxalinyl-1,2,4-triazole 유도체의 합성에 관한 연구
김호식,도이향,남순화,강일영,박태주 대구효성가톨릭대학교 자연과학연구소 1990 基礎科學硏究論集 Vol.4 No.-
The reaction of 3-methoxycarbonylmethylene-2-oxo-1,2,3,4-tetrahydroquinoxaline with p-butylbenzenediazonium chloride gave α-arylhydrazonoester , whose reaction with hydra-zine hydrate afforded α -arylhydrazonoacylhydrazide . The reaction of α-aryl hyd razonoacylh-ydrazide with sodium nitrite in aqueous acetic acid provided a-arylhydrazonoacylazide and then its refluxing in N , N - dimethylformamide furnished 1-aryl-3-quinoxalinyl-1,2,4-triazole .
Isoxazolo [2,3-α]quinoxaline과 Pyrrolo [1,2-α]quinoxaline의 선택적인 합성에 관한 연구
金浩植,南順花,都理香,姜一英 대구효성가톨릭대학교 자연과학연구소 1989 基礎科學硏究論集 Vol.3 No.-
The reaction of 2,6-dichloroquinoxaline with m-chloroperbenzoic acid gave 2,6-dichloroqui-noxaline 4-oxide,whose reation with 4-butylaniline provided 2-substituted 6-chloroquinoxa-line 4-oxide. The isoxazolo( 2,3-α)quinoxaline and pyrrolo[ 1,2-α1 quinoxaline were selectively synthesized from the 2-substituted 6-chloroquinoxaline 4-oxide and dimethyl acetylenedicar-boxylate. Moreover, the pyrrolo( 1,2- α)quinoxaline was found to be produced by the ring transformation of the isoxazolo( 2,3- α)quinoxaline. A postulated reaction mechanism for the ring transformation of isoxazolo(2,3- α )quinoxaline into pyrrolo( 1,2-α) quinoxaline was prese-nted.
새로운 1,2,4-Triazole 유도체의 합성에 관한 연구
金浩植,朴胎晝,都理香,李萬佶,倉澤嘉久 대구효성가톨릭대학교 자연과학연구소 1992 基礎科學硏究論集 Vol.1992 No.1
o-페닐렌디아민(3)을 출발물질로 하여 4단계를 거쳐 α-arylhydrazonoacylazide(7)를 합성하였다. 얻어진 α-arylhydrazonoacylazide(7) 디메틸슬폭시드 용액에서 hydrazone imine형과 diazenyl enamine 형으로 존재하는데 이들 사이의 토오토메리 현상을 ^1H-NMR 스펙트럼 데이터에 의하여 측정된 토오토머비로서 고찰하였다. α-Arylhydrazonoacylazide(7)를 벤젠용매에서 환류시켜 1-aryl-3-quinoxalinyl-1,2,4-triazole(8)을 합성하였다. α-Arylhydrazonoacylazide(7) was synthesized starting from o-phenylenediamine(3) in four steps. The tautomeric behavior of α-arylhydrazonoacylazide(7) between the hydrazone imine and diazenyl enamine forms in the dimethyl sulfoxide solution was investigated on the basis of the tautomer raio determined by the ^1H-NMR spectral data. The 1-aryl-3-quinoxalinyl-1,2,4-triazol(8) was synthesized from α-arylhydrazonoacylazide(7) by refluxing in benzene.
새로운 1,2,4-Triazole 유도체의 합성에 관한 연구
김호식,박태주,도이향,이만길,창택가구,Kim, Ho Sik,Park Tae Joo,Doh Yi Hyang,Lee Man Kil,Kurasawa Yoshihisa 대한화학회 1992 대한화학회지 Vol.36 No.5
${\circo}-페닐렌디아민(3)을 출발물질로 하여 4단계를 거쳐 {\alpha}-arylhydrazonoacylazide(7)를 합성하였다. 얻어진 {\alpha}-arylhydrazonoacylazide(7)는 디메틸슬폭시드 용액에서 hydrazone imine형과 diazenyl enamine형으로 존재하는데 이들 사이의 토오토메리 현상을 ^1H-NMR 스펙트럼 데이타에 의하여 측정된 토오토머 비로서 고찰하였다. {\alpha}-arylhydrazonoacylazide(7)를 벤젠용매에서 환류시켜 1-aryl-3-quinoxalinyl-1,2,4-triazol(8)을 합성하였다.$ ${\alpha}-Arylhydrazonoacylazide(7) was synthesized starting from {\circo}-phenylenediamine(3) in four steps. The tautomeric behavior of {\alpha}-arylhydrazonoacylazide(7) between the hydrazone imine and diazenyl enamine forms in the dimethyl sulfoxide solution was investigated on the basis of the tautomer ratio determined by the ^1H-NMR spectral data. The 1-aryl-3-quinoxalinyl-1,2,4-triazol(8) was synthesized from {\alpha}-arylhydrazonoacylazide(7) by refluxing in benzene.$