• 제목/요약/키워드: reductive amination

검색결과 35건 처리시간 0.019초

Effect of Amination on the Biological Activity of $\beta$-Glucan from Sangwhang (Phellinus linteus)

  • Bae, In-Young;Shin, Ji-Yoon;Lee, Hyeon-Gyu
    • Food Science and Biotechnology
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    • 제17권3호
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    • pp.683-686
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    • 2008
  • $\beta$-Glucans, which were isolated from sangwhang (Phellinus linteus), were subjected to reductive amination and the biological properties of the derivative were investigated. The degree of substitution of the aminated sangwhang $\beta$-glucan was calculated by elemental analysis to be 1.13. Bronchoalveolar lavage (BAL) experiments showed that the aminated derivative increased nitric oxide production. In addition, the amination enhanced in vitro cytotoxic activities against HT1080 and SNU-C2A cell lines. Thus, the aminated derivative is shown to enhance immune systems by the incorporation of amino groups into the polymer structure.

4-(2'-(N-(1-메틸-3-(3'-카바밀페닐)-n-프로필))아미노에틸)-1-히드록시-2- 피리돈의 합성 (Synthesis of 4-(2'-(N-(1-methyl-3'-carbamylphenyl)-n-propyl))aminoethyl)-1-hydroxy-2-pyridone)

  • 윤성화
    • 약학회지
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    • 제37권1호
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    • pp.36-40
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    • 1993
  • The 4-(2'-(N-(l-methyl-3'-carbamylphenyl)-n-propyl))aminoethyl)-l- hydroxy-2-pyridone which has isoelectronic and isosteric structural similarity with dobutamine without having the Catechol-O- Methyltransferase(COMT) vulnerable m-hydroxy group was synthesized via 12 synthetic steps.

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${\alpha}$,${\beta}$-不飽和 카르보닐化合物의 還元 아미노화反應 (Reductive Amination of ${\alpha}$,${\beta}$-Unsaturated Carbonyl Compounds with Tetracarbonylhydridoferrate as a Reducing Agent)

  • 김홍석;심상철;심상철
    • 대한화학회지
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    • 제23권2호
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    • pp.99-103
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    • 1979
  • 세개의 ${\alpha}$,${\beta}$-불포화알데히드, 신남알데히드, 크로톤알데히드, 아크로레인을 여러가지 일차 아민 존재하에서 테트라카르보닐철산염으로 환원시켜 상당히 다른 수득률로 N-알킬아민을 합성하였다. 보통, $KHFe(CO)_4$ (22mmole)와 일차아민(22∼44mmole)과 ${\alpha}$,${\beta}$-불포화 알데히드 (22mmole)를 에탄올 용매에 넣고 일산화탄소 분위기하에 실온에서 9∼60시간 자석 젓개로 저어주면 일산화탄소를 천천히 흡수하면서 반응이 진행된다. 생성물은 가스크로마토그래피, 질량분석스펙트럼, 핵자기공명스펙트럼, 적외선스펙트럼 등으로 그 구조를 알았다.

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An Efficient Method for the Production of Cyclohexylamine from Cyclohexanone and Ammonia over Cu-Cr-La/γ-Al2O3

  • Qin, Shuanglin;Wang, Pan;Huang, Shuangping;Liu, Shuai;Wang, Gaopeng;Wang, Liping;Sun, Meng;Wang, Xiaoji
    • 대한화학회지
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    • 제59권6호
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    • pp.493-498
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    • 2015
  • The reductive amination of cyclohexanone with ammonia over Cu-Cr-a/γ-Al2O3 was investigated. It was found that a proper solvent with high solubility of ammonia and 4Å molecular sieves for the elimination of generated water contributed to the formation of cyclohexylamine in the premixing process. In addition, the addition of ammonia in the fixedbed reactor could obviously improve the conversion of cyclohexanone to cyclohexylamine. Finally, reaction conditions including reaction temperature, hydrogen pressure and charging rate of the premix were optimized. Under the optimized conditions, cyclohexylamine was obtained in 83.06% yield.

Synthesis of Oxazolidinone Phosphonate Derivatives, Part I

  • Hwang, Jae-Min;Shin, Woon-Seob;Jung, Kang-Yeoun
    • Bulletin of the Korean Chemical Society
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    • 제25권9호
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    • pp.1326-1330
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    • 2004
  • Several new derivatives of oxazolidinone phosphonate, that are expected to show biological activity, were prepared efficiently by previously published methods. ${\gamma}$-Ketophosphonate 1 was synthesized using pentacovalent oxaphosphorane chemistry followed by reductive amination with aromatic amine of oxazolidinone 4. Biological activity of the synthetic compounds has been studied. One of the synthetic compounds showed promising result for us to pursue further studies.

Synthesis of 2-Amino-4,6-Di-O-Benzoyl-3-O-Benzyl-1,2-Dideoxy Mannojirimycin

  • 조재익;윤신숙;천근호;Shin, Jeong E.
    • Bulletin of the Korean Chemical Society
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    • 제16권9호
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    • pp.805-808
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    • 1995
  • Diacetone-D-glucose was converted into 5-azido-6-O-benzoyl-3-O-benzyl-5-deoxy-1,2-O-isopropylidene-α-D-glucofuranose. After removal of isopropylidene and benzoyl protecting groups, hydrogenation performed reduction of azide and subsequent cyclization by reductive amination to give 3-O-benzyl-1-deoxy nojirimycin in high yield. The second azide group was introduced on 2-carbon by selective substitution reaction, and reduction of azide to amino group gave titled compound.

5-(2'-(N-(1-메틸-3-(3'-카바밀페닐)-n-프로필))아미노에틸)-8-히드록시-4- 메틸카보스티릴 유도체의 합성 및 안정성 연구 (Synthesis and in Vitro Stability Evaluations of 5-(2'-(N-(1-methyl-3'-carbamylphenyl)-n-propyl))aminoethyl)-8-hydroxy-4-methylcarbostyril Derivatives)

  • 윤성화;박규순
    • 약학회지
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    • 제39권5호
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    • pp.506-510
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    • 1995
  • The 5-(2'-(N-(1-methyl-3'-carbamylphenyl)-n-propyl))aminoethyl)-8- hydroxy-4-methyl-carbostyril derivatives which have isoelectronic and isosteric structural similarity with dobutamine without having the Catechol-O-Methyltransferase (COMT) vulnerable m-hydroxy group were synthesized via 7 synthetic steps, and their stabilities in phosphate buffer solution(pH=7.4), human blood. 80% human plasma and 20% rat liver homogenate were determined in vitro condition.

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