• Journal of Korean Society of Occupational and Environmental Hygiene
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• v.11 no.3
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• pp.219-228
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• 2001

Objective : For the purpose of preparing the fundamental data and health promotion and control program on organic solvents in air of manufacturing industry. Methods : The author surveyed number of organic solvent components which was used in working site and also determined the organic solvents concentration in air of 927 manufacturing industries and 1,267 working process with gas chromatography(NIOSH manual) for five years from 1995 to 1999. Results : Mean number of solvents components by type of industry, working process was number of 12. There were exceeded to TLV of 1,2-dichloroethane in textile manufacturing industry N,N-dimethyl furan in tanning and dressing of leather ; luggage, handbags, saddlery, harness and footwear manufacturing industry and chemical and chemical product manufacturing industry by type of industry. There were exceeded to TLV of 1,2-dichloroethane in handwriting and drawing process, cellosolve in adhesive spreading process, N,N-dimethly furan in production of solvent process and adhesion process by working process Total exceeded rate to threshold limit values of organic solvents mixture were 12.9% for EI(Exposure index) and 10.0% for Em(Estimation of mixture) by type of industry, 11.3% for EI and 8.2% for Em by type of working process. The highest exceed rate was 36.7% for EI in tanning and dressing of leather ; luggage handbags, saddlery, harness and footwear manufacturing industry and 29.0% for Em in textile manufacturing industry. The highest exceeded rate was 23.1% for EI and 12.5% for Em in adhesive spreading process by working process. Mean values of total subjects by type of industry and type of working process were $0.7{\pm}1.8$ for EI and $0.7{\pm}1.7$ for Em respectively. Conclusions : As above results, the author suggest that it makes the environmental control program on 1.2-dichloroethane, N,N-dimethyl furan, cellosolve by kind of organic solvent and on textile manufacturing industry, tanning and dressing of leather ; luggage, handbags, saddlery harness and footwear manufacturing industry by type of industry, and on handwriting, drawing process and adhesive spreading process and adhesion process by type of working process.

• Bulletin of the Korean Chemical Society
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• v.31 no.3
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• pp.683-688
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• 2010

A new and efficient Au-catalyzed alkoxycyclization of conjugated enynols offers a general entry to a wide range of highly substituted furans in good to excellent yields. These furans were subjected to diethyl acetylenedicarcoxylate to afford the interesting cycloadducts in good to excellent yields.

• Bulletin of the Korean Chemical Society
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• v.27 no.6
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• pp.929-932
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• 2006

• Journal of the Korean Chemical Society
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• v.44 no.4
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• pp.391-394
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• 2000

• Korean Journal of Pharmacognosy
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• v.19 no.4
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• pp.251-255
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• 1988

A cytotoxic sesquiterpene against L1210 cell, named pubetalin. was isolated from the herb of Siegesbeckia pubescens Makino. Its structure was identified as $6-formyl-2,\;3,\;3{\alpha},\;4,\;5,\;8,\;9,\;11{\alpha}-octahydro-10-hydroxymethyl-5-methoxy-3-methylene-2-oxocyclodeca[{\beta}]\;furan-4-ylester$ of 2-methyl-2-propenoic acid.

• The Korean Journal of Food And Nutrition
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• v.9 no.4
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• pp.434-437
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• 1996

This study was carried out to investigate the Allium tuberosum. We collect the volatile components of Allium tuberosum by dynamic head space method. Sample was analysed by gas chromatography-mass spectrometry(GC-MS). Twenty on components, 14 sulfides, 12 alcohols, 2 aldehyde, 1 furan, 1 acid and 1 benzene were confirmed in sample.

• Bulletin of the Korean Chemical Society
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• v.23 no.3
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• pp.454-458
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• 2002

Furo[3,2-h]quinoline derivatives were synthesized as a gastric $H^+$/$K^+$-ATPase inhibitors. The oxycyclization of 7 and 8-positions in quinoline potentiated the inhibitory activity, while no significant changes in biological activity were observed by the variation of substituents in furan ring. The several furo[3,2-h]quinoline derivatives were worthy of in vivo investigation for their anti-secretory and anti-ulcer activity.

• Journal of the Korean Home Economics Association
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• v.25 no.1
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• pp.59-67
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• 1987

It these experiments, five kinds of Korean made coffee and three kind of foreign made coffee were analysed using gas chromatography after steam distillation. The results were as following: 1. In general the sample contained light aroma(carbohydrate derivatives), medium aroma(purin derivatives) and heavy aroma(furan dervatives). 2. More light aroma and medium aroma were found in freezing dried coffee than in spraying dried coffee. 3. Korean sample contained lignter aroma than that of foreign ones.

• Natural Product Sciences
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• v.8 no.4
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• pp.111-126
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• 2002

The chemistry of secondary products from Acanthopanax species and their pharmacological activities were reviewed. A nitrogenous compound, a furan compound, a quinoid, benzoids, coumarins, phenylpropanoids, lignans, flavonoids, terpenoids, phytosterols, polyacetylenes, a pyrimidine, cyclitols, monosaccharides and an aliphatic alcohol have been isolated from Acanthopanax species and have been shown to have various levels of activities such as anti-bacterial, anti-cancer, anti-gout, anti-hepatitis, anti-hyperglycemic, anti-inflammatory, anti-leishmanicidic, anti-oxidant, anti-pyretic, anti-xanthine oxidase, choleretic, hemostatic, hypocholesterolemic, immunostimulatory and radioprotectant effects, etc.

• Bulletin of the Korean Chemical Society
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• v.14 no.1
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• pp.29-31
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• 1993

Benzoin condensation reactions of furfurals and thiophenecarboxaldehydes in the presence of substituted benzyl and alkyl thiazolium salts were examined in order to improve the yield of the reaction and to examine the effect of the electronic nature of the catalysts. Thiophene derivatives gave thenils as the major products in low yields while furan derivatives gave only furoins in moderate to high yields.