• 제목/요약/키워드: Pyrimidine

검색결과 268건 처리시간 0.029초

L5187Y 세포에 대한 불화피리미딘 대사억제제 독성에 관한 Benzylacyclouridine의 영향 (The Effects of 5-benzylacyclouridine on the Cytotoxicities of Fluorinated Pyrimidine Antimetabolic Agents in L5178Y Cells)

  • 이강현;차승만
    • 대한약리학회지
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    • 제26권1호
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    • pp.91-100
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    • 1990
  • Benzylacyclouridines (BAU and BBAU)는 uridine phosphorylase (UrdPase)의 선택적이고 강력한 상경억제제이다. 보고된 바에 의하면 (Cancer Res., 44: 1852, 1984) Benzylacyclouridines가 5-fluoro-2'-deoxyuridine (FdUrd)의 인체 암세포에 대한 독성을 증가시켜 준다고 하였지만, L5187Y 세포를 사용한 본 실험에서는 Benzylacyclouridines가 FdUrd를 포함하여 5-fluorouridine (FUra) 모두에 대해 조금도 세포 독성을 증가시키지 못하였을 뿐만아니라, 오히려 세포를 그들 독성으로부터 투여량에 비례하여 보호하였다. 복강내 주사에 의한 생체실험에서도 Benzylacyclouridines는 5-fluorinated pyrimidine에 의한 L5187Y를 지닌 쥐(mouse)의 life-span을 연장시켜 주지 못하였다. 본 실험에서 Benzylacyclouridines가 기대했던 fluorinated pyrimidine 항암제의 효과를 증진시키지 못한 이유는 nucleosides의 anabolism이 UrdPase와 orotate phosphoribosyltransferase이 의한 sequential 작용에 의하던가 또는 Benzylacyclouridines에 의한 nucleosides의 수송억제에 의하던가, 아니면 두가지 다 복합적으로 작용한 결과로 생각된다.

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감초추출물(Glycyrrhiza glabra Extract)의 피부에서의 DNA 손상 방지효과 (Protective Effect of Glycyrrhiza glabra Extract on UV-induced Skin DNA Damage)

  • 신재영;강내규
    • 대한화장품학회지
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    • 제48권1호
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    • pp.33-38
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    • 2022
  • 자외선인 ultraviolet B (UVB)는 피부각질세포의 DNA 잔기에 손상을 준다. 특히, DNA의 pyrimidine 잔기 손상인 cyclobutane pyrimidine dimers (CPD)의 형성은 피부 광노화의 대표적인 지표로 여겨진다. 본 연구에서는 피부 각질세포에서 UVB에 의한 DNA 손상을 완화 시키는 소재로 감초추출물(Glycyrrhiza glabra extract, G. glabra extract)의 효능을 확인하였다. 먼저 피부각질세포에서 UVB 의존적으로 CPD형성이 증가하는 것을 확인하였다. 이후 감초추출물에 의해 UVB 유발 CPD 형성이 유의하게 줄어드는 것을 확인할 수 있었다. 추가로 DNA 손상회복 인자의 mRNA 발현이 감초추출물에 의해 증가하는 것도 확인하였다. 결론적으로 본 연구를 통해 감초추출물의 피부각질세포에서의 DNA 보호 효과를 확인할 수 있었다.

L-1,3-Dioxolane 및 L-1,3-Oxathiolane 피리미딘 뉴크레오사이드의 합성 (Synthesis of L-1,3-Dioxolane and L-1,3-Oxathiolane Pyrimidine Nucleosides)

  • 홍준희;박정하;송지연;최보길;정병호;김중협;이종교;정원근;천문우
    • 약학회지
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    • 제38권6호
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    • pp.775-781
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    • 1994
  • $({\pm})-Dioxolane-T$ and$({\pm})-BCH-189$ are know to possess anti-HIV activities, and less to xicities compared to other dideoxynucleoside AIDS drugs. We have synthesized 34 different enantiomerically pure nucleosides by glycosylation of L-1,3-dioxolanyl acetate and L-1,3-oxathiolanyl acetate sugar moieties with uracil or 6-azauracil with alkyl chains$(C_1-C_3)$ on 5 or 6 position.

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Hydrothermal Synthesis, Crystal Structures and Properties of Zinc(II) Di-nuclear Complex and Copper(I) Coordination Polymer Based on Building Block 2-Phenyl-4,6-di(pyridin-2-yl)pyrimidine

  • Zhao, Pusu;Jing, Wang;Jing, Long;Jian, Fangfang;Li, Yufeng
    • Bulletin of the Korean Chemical Society
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    • 제34권12호
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    • pp.3743-3748
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    • 2013
  • A tetradentate ligand of 2-phenyl-4,6-di(pyridin-2-yl)pyrimidine (L) has been synthesized and its complexes with $ZnI_2$ and CuI have been obtained by hydrothermal method. single crystal X-ray diffraction analysis indicates that ligand L coordinates with Zn(II) ions to form a simple four-coordinate di-nuclear complex, while the complexation of L with Cu(I) constructs a one-dimensional chain polymer. The existence of $I^-$ ion hampers the L to assemble grid-type complexes with Zn(II) and Cu(I). Fluorescence spectra show that the L emits blue fluorescence while its Cu(I) polymer decrease the fluorescence intensity and Zn(II) complex quenches the fluorescence.

Efficient and Selective Construction of Pyrrolo[3,2-d]pyrimidine Derivatives

  • He, Ping;Wu, Jing;Hu, Yang-Gen;Li, Zai-Fang;Hou, Qiu-Fei;Wang, Yan-Ling;Zhao, Kun;Zhang, Erli
    • Bulletin of the Korean Chemical Society
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    • 제35권2호
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    • pp.617-621
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    • 2014
  • An efficient and selective method for the synthesis of ethyl 2-amino/aryloxy-3-aryl-4-oxo-5-phenyl-4,5-dihydro-3H-pyrrolo[3,2-d]pyrimidine-7-carboxylate derivatives has been developed. The main process involved the reaction of diethyl 1-phenyl-3-((triphenylphosphoranylidene)amino)-1H-pyrrole-2,4-dicarboxylate and aromatic isocyanates, followed by addition of amines/phenols in the presence of catalytic amount of sodium ethoxide or solid potassium carbonate.

5-Substituted Pyrimidine Acyclis Nucleoside Analogues 1-Cyanomethyl- and 1-(4-Cyanobutyl)-5-substituted Uracils as Candidate Antitumor Agents

  • Kim, Jack-C.;Dong, Eun-Soo;Park, Jin-Il;Bae, Sang-Duk;Kim, Seon-Hee
    • Archives of Pharmacal Research
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    • 제17권6호
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    • pp.480-482
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    • 1994
  • A number of 5-substituted pyrimidine acyclic nucleosides were synthesized and tested for invitor cytotoxicity against four cell lines (j-82 cell, p-388 cell, FM-3A cell and U-938 cell lines). Synthesis of 1-cyanomethyl-5-substituted pyrimidines (1a-e) and 1-(4-cyanobutyl)-5-substituted pyrimidines (2a-e) was acomplished from the series of alkylation reactions ofl 5-substituted uracils with the corresponding chloacetonitrile and 5-chlorovaleronitile in DMSO under $50^{\circ}C$ temperature. These 5-substituted pyrimidine acylic nucleosides (1a-e and 2a-e) exhibited moderate to significant acitivity aginst four cell lines.

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3,7-Diarylpyrazolo[1,5-α]pyrimidines의 개선된 One-pot Regioselective 합성과 CB1R 활성 (Improved One-pot Regioselective Synthesis of 3,7-Diarylpyrazolo[1,5-α]pyrimidines and Their CB1R Activity)

  • 홍용덕;변경희;박미영;박준성;신송석
    • 대한화장품학회지
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    • 제41권2호
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    • pp.143-150
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    • 2015
  • 본 연구는 3,7-diarylpyrazolo [1,5-${\alpha}$]pyrimidines의 효과적인 one-pot regioselective 합성을 보여준다. 더욱이, 그 유도체는 뛰어난 CB1R 저해 활성을 나타냈다. 3,7-position에 diaryl group이 치환된 pyrazolo [1,5-${\alpha}$]pyrimidine은 CB1R 후보로서 가능성 있는 pharmacophore이다.

Reactions of Pyrimidinonethione Derivatives;Synthesis of 2-Hydrazinopyrimidin-4-one, Pyrimido[1,2-a]-1,2,4-triazine, Triazolo-[1,2-a]pyrimidine, 2-(1-pyrazolo)Pyrimidine and 2-Arylhydrazonopyrimidine Derivatives

  • Attaby, Fawzy-A.;Eldin, Sanaa-M.;Hanafi, Eman-A.Z.
    • Archives of Pharmacal Research
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    • 제20권6호
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    • pp.620-628
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    • 1997
  • 6-Aryl-5-cyano-4-pyrimidinon-2-thione derivatives 1a-c reacted with ethyl iodide to give the corresponded 2-S-ethylpyrimidin-4-one-derivatives 2a-c. Compounds 2a-c was, in turn, reacted with hydrazine hydrate to give the sulfur free reaction products, 3a-c. These reaction products were taken as the starting materials for the synthesis of several newly synthesized heterocyclic derivatives. Reactions with several halogenated ketones, esters, chloroacetic acid and chloroacetamide give pyrimidotriazines 8,12 and 15 while their reactions with formic acid, acetic acid and carbon disulfide gave the corresponded triazolopyrimidines 17 and 21. The reaction with both acetyl acetone and ethylacetoacetate gave the corresponded 2-$(3^{I},5^{I}-dimethyl-1^{I}-pyrazoly$pyrimidine derivatives 20a-c and 24a-c respectively while the reaction with cinnamonitriles 25a-h afforded the corresponded aryl hydrazopyrimidines 27a-f. The structure of these reaction products were eatablished based on both elemental anlayses and spectral data studies.

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제초성 Benzenesulfonyl urea계 화합물의 형태와 반응성 (Conformation and Reactivity of Herbicidal Benzenesulfonyl urea Compounds)

  • 유성재;이상호;고영관;성낙도
    • Applied Biological Chemistry
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    • 제39권3호
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    • pp.235-240
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    • 1996
  • 제초성 비치환(H) benzenesulfonyl urea 분자, 1은 sulfonyl group 인접의 amino group과 pyrimidinyl group의 N원자 사이에 회합(H-결합)된 형태(II-keto)가 제일 안정하였으며 phenyl 치환$(R_2$$R_3)$유도체, 2는 전자를 밀수록$(\sigma<0)$ LUMO(ev.)는 음의 값으로 증가하여 물 분자의 HOMO(ev.)사이에 궤도 조절반응(p<0)에따른 전형적인 친핵 반응성을 나타낸다. N-(4,6-이치환-pyrimidine-2-yl)aminocarbonyl-2-(1,1-dimethoxy-2-fluoro)ethylbenzenesulfonamides, 3 및 N-(4,6-이치환-triazine-2-yl)aminocarbonyl-2-(1,1-dimethoxy-2-리uoro)ethylbenzenesulfonamide, 4 유도체의 4,6-이치환기(X 및 Y) 와 헤테로 고리의 변화에 따른 올챙이고랭이(Scirpus juncodies.) 에 대한 제초활성은 소수성$((log\;P)_{opt.}=0.89)$이 가장 큰 영향을 미치는 요인이었다. 또한, pyrimidine-치환체, 3이 triazine-치환체, 4보다 양호한 제초활성을 나타내었으며 dimethoxypyrimidine-치환체, 3a가 가장 큰 제초활성을 보였다.

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