Anti-acne activities of pulsaquinone, hydropulsaquinone, and structurally related 1, 4-quinone derivatives

Article

Abstract

Quinone type compound, pulsaquinone 1, isolated from the aqueous ethanol extract of the roots of Pulsatilla koreana exhibited antimicrobial activities against an anaerobic non-spore-forming gram-positive bacillus, Propionibacterium acnes, which is related with the pathogenesis of the inflamed lesions in a common skin disease, acne vulgaris. Compound 1 was unstable on standing and thus converted to more stable compound 2, namely hydropulsaquinone by hydrogenation, whose activity was comparable to mother compound 1 (MIC for 1 and 2 against P. acnes: 2.0 and 4.0 μg/mL, respectively). Other structurally-related quinone derivatives (3–13) were also tested for structure-activity relationship against anaerobic and aerobic bacteria, and fungi. The antimicrobial activity was fairly good when the quinone moiety was fused with a nonpolar 6- or 7-membered ring on the right side whether or not conjugated (1,4-naphtoquinone derivatives 3–5), while simple quinone compounds 6–9 showed poor activity. It seems that the methoxy groups at the left side of the quinone function deliver no considerable antimicrobial effect.

Key words

Pulsatilla koreana Pulsaquinone Hydropulsaquinone Anti-acne Propionibacterium acnes 

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Copyright information

© The Pharmaceutical Society of Korea 2009

Authors and Affiliations

  • Soon-Chang Cho
    • 1
  • Md. Zakir Sultan
    • 1
  • Surk-Sik Moon
    • 1
  1. 1.Department of ChemistryKongju National UniversityKongjuKorea

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