• Natural Product Sciences
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• v.4 no.1
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• pp.42-44
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• 1998

Aromatic esters named benzyl-2,6-dimethoxy and benzyl-2,3,5,6-tetramethoxybenzoates along with previously reported compounds were isolated from aerial parts of Blainvillea latifolia.

• YAKHAK HOEJI
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• v.10 no.2_3
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• pp.12-14
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• 1966

As the projects of this institute, 205 species of plants which are used currently as herb drugs in Korea were screened on the presence of alkaloids, phenolic compounds, flavonoids, chalcones, lactones, glycosides, carbohydrates, terpenoids, steroids, proteins, polypeptides, saponins, and organic acids$^{1-4)}$, and the most reliable presence of alkaloids was detected by paper chromatography$^{5-8)}$. In this paper, presence of alkaloids detected by thin layer chromatography is added after screening of 40 species.

• YAKHAK HOEJI
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• v.9 no.3_4
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• pp.34-36
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• 1965

As the projects of this institute, a hundred and sixtyfive species of plants which are used currently as herb drugs in Korea were screened on the presence of alkaloids, phenolic compounds, flavonoids, chalcones, lactones, glucosides, carbohydrates, terpenoids, steroids proteins, polypeptides, saponins, and organic acids, and the most reliable presence of alkaloids was detected by paper chromatograph. In this paper, presence of alkaloids is added by screening of 45 species.

• YAKHAK HOEJI
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• v.8 no.2
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• pp.35-36
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• 1964

One of projects of this institute is phytochemical survey of the herb drugs in Korea for further study. A hundred and fifteen species of plants which are used currently as herb drugs in Korea were screened on the presence of alkaloids, phenolic compounds, flavonoids, chalcones, lactones, glucosides, carbohydrates, terpenoids, steroids, proteins, polypeptides, saponins, and organic acids, and the most reliable presence of alkaloids was detected by paper chromatography. In this paper, presence of alkaloids is also tabulated after screening other 50 species.

• YAKHAK HOEJI
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• v.12 no.3_4
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• pp.91-92
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• 1968

As the projects of this institute, 280 species of plants which are currently used as herb drugs in Korea were screened on the presence of alkaloids, phenolic compounds, flavonoids, chalcones, lactones, glycosides, carbohydrates, terpenoids, steroids, proteins, polypeptides, saponins, and organic acids, and the most reliable presence of alkaloids detected by thin layer chromatography is added by screening of 75 species.

• Proceedings of the PSK Conference
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• 2002.04a
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• pp.201.2-202
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• 2002

• Bulletin of the Korean Chemical Society
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• v.25 no.12
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• pp.1963-1965
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• 2004

• Bulletin of the Korean Chemical Society
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• v.28 no.5
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• pp.719-720
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• 2007

• YAKHAK HOEJI
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• v.13 no.4
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• pp.147-148
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• 1969

As one of projects of this Institute, 330 species of plants which are currently used as herb drugs in Korea were screened for the presence of alkaloids, phenolic compounds, flavonoids, chalcones, lactones, glycosides, carbohydrates, terpenoids, steroids, proteins, polypeptides, saponins, and organic acids. The most reliable presence of alkaloids detected by thin layer chromatography is presented by screening of 52 species.

• Bulletin of the Korean Chemical Society
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• v.15 no.6
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• pp.448-452
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• 1994

2-Hydroxymethyl-2,5-dihydrothiophene 1,1-dioxide (1) was prepared from thiophene-2-carboxylic acid by consecutive reactions involving the Birch reduction, esterification, reduction with lithium aluminum hydride, and oxidation with Oxone$^{\circledR}$. The esterification of alcohol 1 with various unsaturated carboxylic acids provided the precursors 8 for the intramolecular Diels-Alder reaction. The cheletropic expulsion of sulfur dioxide from the esters 8 followed by intramolecular Diels-Alder reaction furnished bicyclic ${\gamma}$-and ${\delta}$-lactones.