• 제목/요약/키워드: o-phenylphenol

검색결과 4건 처리시간 0.02초

Synthesis and Antibacterial Activities of 4-Hydroxy-o-phenylphenol and 3,6-Diallyl-4-hydroxy-o-phenylphenol against a Cariogenic Bacterium Streptococcus mutans OMZ 176

  • Bae, Ki-Hwan;Koo, Sung-Hyun;Seo, Won-Jun
    • Archives of Pharmacal Research
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    • 제14권1호
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    • pp.41-43
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    • 1991
  • For the purpose of survey of the antibacterial activity against a cariogenic bacterium Streptococcus mutans OMZ 176 with the introduction of hydroxyl and allyl groups to o-phenylphenol (Fig. 2, 1), 4-hydroxy-o-phenylphenol (2), and 3,6-diallyl-4-hydroxy-o-phenylphenol (4) were synthesized, sucessively. The synthesized compounds, 2 and 4 showed more potent antibacterial activity than the starting material, 1. The hydroxyl group was supposed to the essential element for the antibacterial activity and the introduction of allyl group to phenolic ring to be another element to increase the activity.

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Antimicrobial Activities of Hydroxybiphenyl Derivatives (II) - Synthesis and Antibacterial Activities of Allylhydroxybiphenyl Compounds against a Cariogenic Bacterium Streptococcus mutans ATTCC OMZ176

  • Seo, Won-Jun;Koo, Sung-Hyen;Bae, Ki-Hwan
    • Archives of Pharmacal Research
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    • 제9권3호
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    • pp.127-130
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    • 1986
  • Naturally occurring diallyldihydroxybiphenyl compounds, magnolol and honokiol were reported to have potent antibacterial activities against most of Gram positive bacteria (1-4). To developmore potent antibacterial agents, some allyhydroxybiphenyl derivatives were synthesized from the starting compounds, p-phenyl-phenol (I) p-phenylphenol (IV), o, o-biphenol (VII) and p. p'-biphenol (XII). Among the newly synthesized compounds (III, VI, IX, XI, XIV and XVI), the antibacterial activities of 2-allyl-p-phenylphenol (VI), 6-ally-o, 0'-biphenol (IX), 2, 2'-diallyl-o, o'-biphenol (XIV) and 2, 2', 6-triallyl-p, p'-biphenol (XIV) were more potent than those of magnolol and bonokiol against a cariogenic bacterium, Stroptococcus matans ATCC OMZ 176.

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실옥산테트라머를 이용한 나뭇가지꼴 실란거대분자의 제조와 정지반응 (Preparation and Termination of Carbosilane Dendrimer Based on Siloxane Tetramer)

  • 김정균;박은미
    • 대한화학회지
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    • 제42권3호
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    • pp.277-284
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    • 1998
  • Siloxane tetramer$(Me(CH_2=CH)SiO)_4$를 중심분자로 한 나뭇가지꼴 거대분자(제1세대-제4세대)를 allylmagnesium bromide와 dichloromethylsilane를 이용한 alkenylation과 hydrosilation 반응를 통해 제조하였다. Dichlorosilyl기를 가진 G4세대와 p-bromophenol, p-phenylphenol, lithium phenylethynylide등과의 반응에서 특정기능을 가지는 G4P-BP(Mw: 16,300), G4P-PP(16,121), G4P-PA(11,764) 등이 합성되었다. 새롭게 형성된 나뭇가지꼴 거대분자는 NMR, UV, MALDI mass의 분석에 의해 균일한 구조를 가지고 있음이 확인되었다.

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Tetrahomodioxa p-phenylcalix(4) arene dihexylether의 합성 및 구조에 관한 연구 (Synthesis and Structure of Tetrahomodioxa p-phenylcalix(4)arene dihexylether)

  • 노광현;박영자
    • 한국결정학회지
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    • 제13권3_4호
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    • pp.158-164
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    • 2002
  • Tetrahomodioxa p-phenylcalix(4)arene dihexylether (C/sub 66/H/sub 68/O/sub 6/)를 합성하여 분자 및 결정 구조를 X-선 회절법으로 연구하였다. p-Phenylphenol의 탈수, 고리화 반응으로 만든 tetrahomodioxa p-phenylcalix(4)arene을 DMF에서 NaH와 hexyl iodide를 환류시켜 합성하였다. 결정은 사방정계이고 공간군은 P2₁2₁2₁, a =9.764(2), b = 16.167(2), c = 32.994(3) Å, V=5208(1) ų, Z= 4, Dc=1.221 gcm/sup -3/이다. 직접법으로 구조를 해석하였으며, 최소자승법으로 정밀화하여 최종 신뢰도 R 값은 2009개의 회절 반점에 대해 0.070 이었다. 이 분자는 마주 보고 있는 phenyl group 두 쌍이 거의 평행을 이루며, C-1,2-alternate conformation이고, lower rim의 1,3 위치에 hexyl 기가 치환된 비대칭 homooxacalixarene이다.