• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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• v.19 no.2
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• pp.161-167
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• 2006

독활(Aralia continentalis)로부터 항균활성 물질을 찾아내기 위한 일환으로 항균실험과 분리실험을 병행하여 실시하였다. 항균활성물질 분리는 독활을 클로로포롬으로 추출하여 실리카겔($SiO_2$)과 분취용액체크로마토그래피(prep-HPLC)법으로 2종의 화합물을 분리하여 핵자기공명(NMR) 등 분광학적인 기법으로 이용하여 구조동정을 하였다. 이때 2종의 화합물은 (-)-pimara-8(1),15-diene-19-oic acid와 (24E)-stagmasta-5,22-dien-$3{\beta}-ol$임이 확인되었다. 2종의 화합물에 대한 메티실린 내성 황색포도상구균(MRSA) 및 메터실린 감응 황색포도상구균(MSSA)의 표준균주와 임상분리균주(MRSA)에서의 최소억제농도(MIC)가 $8-16{\mu}g/mL$로 나타났다. 그러므로 본 연구의 결과로부터 화합물(-)pimara-8(1),15-diene-19-oic acid은 항생제 내성균에 대한 치료제로서 개발 가능성을 확인할 수 있었다.

• Archives of Pharmacal Research
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• v.6 no.1
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• pp.17-23
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• 1983

By tracing albumin stabilizing activity an anti-inflammatory component, continentalic acid was isolated from ether-soluble acidic fraction of Aralia continentalis. Continenetalic acid in a concentration of 0.115mg/3ml gave 50% inhibition for heat denaturation of albumin. The protein stabilizing potency of it was approximately three and eleven times that of phenylbutazone and that of salicylic acid, respectively. The anti-inflammatory actions of it and its methylester were investigated employing carrageenin-induced edema in rat paw. Continentalic acid administered s. c. showed an activity of about three times of hydrocortisone. When administered p. o., it was still active, but its methylester was more active than phenylbutazone, suggesting the poor absorption of it in gastorointestinal tract. Its chemical structure was identified by chemical and spectral studies as (-) pimara 8(14), 15-diene-19-oic acid, which was already isolated from A. dordata, but not reported for its biological activity.

• Proceedings of the PSK Conference
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• 2003.04a
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• pp.298.1-298.1
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• 2003

The aim of this study was to investigate the protective effect of acanthoic acid on liver injury induced by either tertiary-butyl hydroperoxide (tBH) or carbon tetrachloride in vitro and in vivo. Acanthoic acid, (-)-pimara-9(11),15-diene-19-oic acid, is a diterpene isolated from the root bark of Acanthopanax koreanum. In in vitro study, the cellular leakage of lactate dehydrogenase (LDH) with 1.5 mM tBH for 1 j, were significantly inhibited by treatment with acanthoic acid(25 and 5mg/mL). (omitted)

• International Journal of Oral Biology
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• v.33 no.4
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• pp.213-216
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• 2008

Continentalic acid (CA, (-)-pimara-8(14), 15-diene-19-oic acid) was isolated from the roots of Aralia cordata (Araliaceae) using bioassay-guided fractionation of a crude chloroform extract. The antibacterial activity of CA against Enterococcus faecalis and Enterococcus gallinarium was estimated by determining minimum inhibitory concentrations (MICs) and minimum bactericidal concentrations (MBCs). CA exhibited potent activity against standard vancomycin-resistant enterococci (VRE) and vancomycin-susceptible enterococci (VSE), with MICs and MBCs values between 4 and $8{\mu}g/mL$ and 4 and $16{\mu}g/mL$, respectively. This compound exhibited potent activity against strains of VRE, which are highly resistant to clinically useful antibiotics. These findings suggest that continentalic acid may be useful in controlling enterococcal infection.