• Archives of Pharmacal Research
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• v.14 no.3
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• pp.279-281
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• 1991

In the field of cephalosporins, introduction of quaternary heterocyclic methyl goups at the C-3 position has led to a new class of cephalosporins such as cefepime and cefpirome, the so-called 4th generation cephalosporins which are characterized by their potent activity. Since than many efforts were attempted to synthesize more effective analogs.

• Archives of Pharmacal Research
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• v.21 no.3
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• pp.330-337
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• 1998

N-(tert-Butoxycarbonyl)-O-(dimethythiophosphono)-L-tyrosine (6) and N-(tert-butoxycarbonyl)-O-(dicyanoethylthiophosphono)-L-tyrosine (15) were prepared as intermediates for the synthesis of thiophosphotyrosine-containing peptides. The reactivity and suitability of two compounds for the solid phase or solution phase peptide synthesis utilizing t-Boc chemistry were examined.

• Bulletin of the Korean Mathematical Society
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• v.54 no.5
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• pp.1699-1718
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• 2017

We give a construction of the second Chern number of a vector bundle over a smooth projective surface by means of adelic transition matrices for the vector bundle. The construction does not use an algebraic K-theory and depends on the canonical ${\mathbb{Z}}-torsor$ of a locally linearly compact k-vector space. Analogs of certain auxiliary results for the case of an arithmetic surface are also discussed.

• Journal of Microbiology and Biotechnology
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• v.12 no.5
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• pp.838-840
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• 2002

Feeding experiments of various derivatives of p-aminobenzamide to benzastatins-producing Streptomyces nitrosporeus were performed to observe whether new biosynthetic analogs of benzastatins were produced. The supplementation of p-aminobenzoic acid to the culture medium of Strepromyces nitrosporeus led to the production of benzastatin J, a new demethylated derivative of benzastatin B, while production of benzastatins A and B increased and benzastatins C-G were not detected.

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2003.05a
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• pp.187-188
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• 2003

Conadotropin releasing hormono analogs (GnRHa) have now been tested successfully a range of marine and freshwater species and been shown to be an effective strategy for improving milt quantity and quality (Mylonas and Zohar, 2001; Zohar and Mylonas, 2001; Lim et at, , 2002). Greenback flounder (Rhombosolea tapirina) is currently under consideration as a potential culture species in south-eastern Australia. (omitted)

• Proceedings of the Zoological Society Korea Conference
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• 1996.10a
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• pp.150.2-150
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• 1996

No Abstract, See Full Text

• Archives of Pharmacal Research
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• v.22 no.5
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• pp.502-506
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• 1999

Different 2-(8,12 dimethyl-5-oxa-7(E), 11-tridecadienyl)-alkyl phenyl ethers, their mono oxirane and thirane derivatives were synthesized and tested on Culex pipiens quinquefasciatus Say for their juvenile hormone activity.

• Bulletin of the Korean Chemical Society
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• v.31 no.11
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• pp.3437-3440
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• 2010

• Bulletin of the Korean Chemical Society
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• v.30 no.10
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• pp.2471-2474
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• 2009

• Proceedings of the PSK Conference
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• 2001.10a
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• pp.240.3-241
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• 2001