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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 40, Number 9
JKCSEZ 40(9)
June 20, 1996 

 
Title
The Structure of Phenolic Compounds and Their Antibiotic Activities in Umbilicaria vellea

Umbilicaria vellea 중 페놀성 화합물의 구조 및 항균 활성
Author
Tae-Jin Min, Kang-Gyu Bae

민태진,배강규
Keywords
Abstract
지의류에 속하는 Umbilicaria vellea 중에 에탄올 분획의 항균활성 물질을 규명하기 위하여 silica 겔 컬럼 크로마토그래피 및 재결정법으로 화합물 Ⅰ과 Ⅱ를 순수히 분리정제하여 그 구조와 항균활성을 측정하였다. 정제된 화합물 Ⅰ은 Cryptococcus neoformance 등의 균에 대한 항진균활성과, Pseudomonas aeruginosa 등의 균에 대한 항세균 활성이 있었다. 이 물질의 녹는점은 129∼132℃였고, 217, 265, 및 300 nm의 UV 최대흡광을 보였다. 그리고 EI-mass에서 측정된 분자 이온은 m/z 196이었고, 원소분석 결과 분자식은 C10H12O4였으며 IR 및 NMR 스펙트라로부터 이 물질이 ethyl 2,4-dihydroxy-6-methyl benzoate임을 확인하였다. 화합물 Ⅱ의 녹는 점은 58∼59℃였고, 212, 276, 및 282 nm의 UV 최대흡광을 보였다. 이 물질의 분자이온은 m/z 124였고, C7H8O2의 분자식을 갖는 5-methyl-1,3-benzenediol임을 확인하였다.

In order to identify antibiotic substances in the extract of a lichen, Umbilicaria vellea, the extract was chromatographed and two compounds were isolated. Compound Ⅰ which showed antifungal and antibacterial activities, melted around 129∼132℃ and showed UV absorption at 217, 265 and 300 nm. It showed a molecular ion at m/z 196. Its molecular formular was confirmed to be C10H12O4 from elemental analysis. From its IR and NMR data it was identified to be ethyl 2,4-dihydroxy-6-methyl benzoate. Compound Ⅱ melted around 58∼59℃ and showed UV absorption at 212, 276 and 282 nm. It showed a molecular ion at m/z 124 and molecular formular was confirmed to be C7H8O2. From the analysis of its IR and NMR spectra it was identified to be 5-methyl-1,3-benzenediol.

Page
623 - 629
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