• 제목/요약/키워드: Cyclopropyl

검색결과 61건 처리시간 0.027초

1-Cyclopropyl-7-(2,7-diazabicyclo[3.3.0]oct-4-en-7-yl)-6-fluoro-8-methoxy-4-oxo-1,4-dihydroquinoline-3-carboxylic acid 염산염의 결정구조 (Crystal Structure of 1-Cyclopropyl-7-(2,7-diazabicyclo[3.3.0]oct-4-en-7-yl)-6-fluoro-8-methoxy-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (HCI salt))

  • 김문집;신준철
    • 한국결정학회지
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    • 제6권2호
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    • pp.103-110
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    • 1995

  • 1-Cyclopropyl-7-(2,7-diazabicyclo[3.3.0]oct-4-en-7-yl)-6-fluoro-8-methoxy-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (HCI salt)의 분자 및 결정 구조를 X-선 회절법으로 연구하였다. 이 결정의 분자식은 C20H21N3O4FCl(이하 CDD), 결정계는 단사정계이고 공간군은 C2/c이다. 단위포상수 a=28.349(2)Å, b=11.941(2)Å, c=12.806(2)Å이며 β=96.428(9)°, V=4307.8Å3, T=296(2)K, Z=8이다. 구조해석에 사용한 X-선은 CuKα선(λ=1.5418Å)을 사용하였다. 분자구조는 직접법으로 풀었으며, 최소자승법으로 정밀화하였다. 최종 신뢰도 R값은 F0>4σ(F0)인 2258개의 독립 회절데이타에 대해 R=4.96%이었다. 이 분자는 내부수소결합 O(28)-H(28)…O(25) [2.517(4)Å, 156.7(447)°]를 가지고 있으며, 분자간의 결합은 van der Waals 힘으로 결합되어 있다.

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혼성 Bivalent Ligand 퀴놀론 유도체의 합성 (Synthesis of Hybrid Bivalent Ligand Quinolone Derivatives)

  • 이상필;임채욱;김동순;임철부
    • 약학회지
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    • 제38권6호
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    • pp.664-672
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    • 1994

  • Eighteen new hybrid bivalent ligand quinolones that contain two different type of pharmacophores in a single molecule were prepared and evaluated for in viかo antibacterial activity. Hybrid bivalent ligands p-nitrobenzyloxycarbonyl quinolones were prepared by the treatment of active esters of succinyl fluoroquinolones with 1,7-disubstituted fluoroquinolone carboxylic acids in DMF. Eighteen final quinolone carboxylic acids were obtained by the reduction of compounds $25{\sim}42$ with hydrogen in the presence of 10% Pd-C. Among these derivatives, compound[56] showed the most potent antibacterial activity against a wide range of microoranisms.

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새로운 사이클로프로필 뉴크레오사이드 유도체의 합성과 생리활성 (Synthesis of Novel Cyclopropyl Nucleoside Derivatives as Potential Antiherpetic Agent)

  • 강진아;천부순;문형룡
    • 약학회지
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    • 제56권4호
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    • pp.230-235
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    • 2012

  • Synthesis of novel cyclopropyl pyrimidine and purine nucleoside derivatives 2~8 with ${\alpha}$-configuration was successfully accomplished using an epoxide-ring opening reaction, lactonization, a hydroboration-oxidation reaction and a Mitsunobu reaction as the key steps. Antiviral activities against HSV-1 and -2, HIV-1 and -2, coxsackie B1and B3 viruses and poliovirus were assayed. Three compounds 4, 7 and 8 exhibit cytotoxicity-derived antiviral activity only in HIV-1 and -2.

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