• 제목/요약/키워드: carboxylic

검색결과 848건 처리시간 0.023초

2-치환-3, 4-Dihydro-2H- 1, 2-benzothiazin-4-one 1, 1-dioxides로부터 2-치환-4-Hydroxy-2H-1, 2-benzothiazine-3-carboxylic acid 1, 1-dioxides의 합성 (Synthesis of 2-Substituted-4-hydroxy-2H-1, 2-benzothiazine-3-carboxlic acid 1, 1-dioxides from 2-Substituted-3, 4-dihydro-2H-1, 2-benzothiazin-4-one 1, 1-dioxides)

  • 서정진;홍유화
    • 약학회지
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    • 제31권1호
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    • pp.14-18
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    • 1987
  • 2-Substituted-3, 4-dihydro-2H-1, 2-benzothiazin-4-one 1, 1-dioxide 6 was reatced with magnesium methyl carbonate to form magnesium chelate 7, which could be hydrolized in cold hydrochloric acid solution to give 2-substituted-4-hydroxy-2H, 1, 2-benzothiazine-3-Carboxylic acid 1, 1-dioxide 2 in good yield.

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2,2'-(ethylenediimino) and 2,2'-(thioureido)-di-1-carboxylic acids의 항결핵성및 항균성화합물로서의 합성연구 (Synthetic studies of 2,2'-(ethylenediimino) and 2,2'-(thioureido)-di-1-carboxylic acids as the antitubercular and the other bacteriostatic agents)

  • Chough, Yun-Sung
    • 약학회지
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    • 제10권2_3호
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    • pp.8-11
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    • 1966
  • 항인결핵균성및 streptomycin, isoniazid및 para-aminosalicylic acid에 대한 내성인결핵균주에 현저한 항균작용 있는 dextro-2,2'-(ethylenediimino)-di-1- butanol(Ethambutol) 계열 및 thioureido(-NHCSNH-) 함유화 합물 계열인 2,2'-(ethylenediimino)-di-1-butyric acid및 2,2'-(thioureido)-di-1-butyric acid를 합성했으며 이들 약물의 구조와 작용간의 상호관계를 설명코저 이들 화합물과 류사한 구조인 2,2'-(thioureido)-di-acetic acid를 합성했기에 보고함.

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Biosynthesis of L-Azetidine-2-carboxylic acid in actinoplanes ferrugineus

  • Lee, Kang-Man;Woodard, Ronald W.
    • 미생물과산업
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    • 제13권1호
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    • pp.10-13
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    • 1987
  • L-Azetidine-2-carboxylic acid(A-2-C) is a four-membered cyclic imino acid which was first discovered from Convalaria majalis and Polygonatum officinalis in 1955(1,2). The imino acid A-2-C has been identified in at least 16 species of plants (3) (mostly the families Liliaceae, Agavaceae and Amaryllidaceae); in two marine sponges (Haliclona sp. and Chalinospilla sp.) (4); in the red algae (Lophocladia lamenandi) (5); in the sugar beet Beta vulgaris (6) ; and the microorganism Actinoplanes ferrugineus (7).

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TD GC/MS를 이용한 카카오의 향기 성분 분석 (Analysis of Volatile Compounds in Cacao by TD GC/MS)

  • 정진순
    • 한국콘텐츠학회:학술대회논문집
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    • 한국콘텐츠학회 2015년도 춘계 종합학술대회 논문집
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    • pp.267-268
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    • 2015
  • 카카오에 함유되어 있는 향기성분을 열탈착 가스크로마토 질량분석기(TD GC/MS)를 이용하여 실시하였다. 그 결과 hydrocarbone류 10종, alcohol류 3종, aldehyde류 7종, ketone류 3종 및 carboxylic acid류 4종 등 총 27종의 향기성분이 동정되었다. 그 중에서 carboxylic acid류의 향기성분이 55.88%로 가장 많이 함유되어 있었다. 그 다음으로 알데히드류가 13.80%, 케톤 화합물이 11.90% 그리고 모노테르펜 화합물이 11.7% 함유되어 있음을 확인하였다.

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프탈로시아닌계 안료를 이용한 TO-14의 흡착능력평가

  • 이정세;서정호;이학성
    • 한국환경과학회:학술대회논문집
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    • 한국환경과학회 2006년도 학술발표회 발표논문집
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    • pp.141-143
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    • 2006
  • Carboxylic phthalocyanine합성물을 분석한 결과 Copc의 Co가 3.06Wt.(%)에서 Cooapc가 0.28Wt.(%)로 나타난 것으로 보아 carboxylic group이 증가한 것을 알 수 있었으머, Fepc도 같은 결과로 나타났다. 휘발성유기화합물의 제거효율을 분석한 결과 극성이 높은 물질은 쉽게 흡착 되었으며 일부 제거가 되지 않은 물질은 Fig.3, Fig.4에서 보는바와 같이 Feoapc보다는 Cooapc가 제거효율이 높은 것으로 나타났다.

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앉은부채(Symplocarpus renifolius Schott) 뿌리의 성분 (Constituents from the Root of Symplocarpus renifolius Schott)

  • 염정록;박동우
    • 생약학회지
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    • 제28권3호
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    • pp.143-148
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    • 1997
  • From the root of Symplocarpus renifolius, four compounds were isolated and their structure was elucidated by chemical and spectroscopic methods. They were identified as ${\beta}-sitosterol$ (compound 1), asparagine (compound 2), isocorydine (compound 3) and 3-hydroxymethyl-4-phenyl phenoxy carboxylic acid glucopyranosyl ester (compound 4). These compounds were firstly isolated from roots of Symplocarpus renifolius. Compound 4 was identified as a new compound, named as symplocarposide.

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Glycyl Norfloxacin 유도체의 합성과 항균작용 (Synthesis and Antimicrobial Activity of Glycyl Norfloxacin Derivatives)

  • 이현수;임채욱;임철부
    • 약학회지
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    • 제43권4호
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    • pp.442-446
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    • 1999
  • The synthesis and antimicrobial activity of N-substituted glycyl derivatives of Norfloxacin were described. Norfloxacin was treated with chloroacetyl chloride to yield chloroacetyl norfloxacin (1). This compounds was treated with alkylamines to obtain quinolone carboxylic acids (2-6), which were reacted with pivaloyloxymethyl chloride to get pivaloyloxymethyl quinolone carboxylates (7-11). Free carboxylic quinolones (2-6) showed little stronger activities to their pivaloyloxymethyl esters (7-11). In quinolone analogues, longer alkyl chain compounds showed stronger activities than shorter one.

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