Zobrazeno 1 - 10 of 16 pro vyhledávání: '"Ok Kyoung Choi"'
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Akademický článek
Synthesis of Novel (S)-3-(1-Aminoethyl)-8-pyrimidinyl-2-phenylisoquinolin-1(2H)-ones by Suzuki–Miyaura Coupling and Their Cell Toxicity Activities
Autor: Ok Kyoung Choi, Yong Ho Sun, Hyemi Lee, Joon Kwang Lee, Tae Hoon Lee, Hakwon Kim
Publikováno v: Pharmaceuticals, Vol 15, Iss 1, p 64 (2022)
A series of (S)-3-(1-aminoethyl)-8-pyrimidinyl-2-phenylisoquinoline-1(2H)-ones 3a–3k was synthesized in 40–98% yield through Suzuki–Miyaura coupling using Pd(PPh3)2Cl2, Sphos, and K2CO3 in THF/H2O mixed solvent. All newly synthesized compounds
Externí odkaz: https://doaj.org/article/eda4321930654f728106dafceaf77beb
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Synthesis of Novel (
Autor: Ok Kyoung, Choi, Yong Ho, Sun, Hyemi, Lee, Joon Kwang, Lee, Tae Hoon, Lee, Hakwon, Kim
Publikováno v: Pharmaceuticals
A series of (S)-3-(1-aminoethyl)-8-pyrimidinyl-2-phenylisoquinoline-1(2H)-ones 3a–3k was synthesized in 40–98% yield through Suzuki–Miyaura coupling using Pd(PPh3)2Cl2, Sphos, and K2CO3 in THF/H2O mixed solvent. All newly synthesized compounds
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::64afee44ed97f7a11470c3e9a9ffde3c
https://pubmed.ncbi.nlm.nih.gov/35056121
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3
A convenient synthesis of (1S,2R)-1,2-indene oxide and trans-(1S,2S)-2-bromo-1-indanol via oxazaborolidine-catalyzed borane reduction
Autor: Ok Kyoung Choi, Byung Tae Cho
Publikováno v: Tetrahedron: Asymmetry. 12:903-907
A facile synthesis of (1 S ,2 R )-indene oxide with >99% e.e. and (1 S ,2 S )- trans -2-bromo-1-indanol with 87% e.e. has been established by employing CBS-oxazaborolidine-catalyzed asymmetric borane reduction of 2- p -toluenesulfonyloxy-1-indanone u
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::53b586ee7f5e5a516a5cca4bac94b1b6
https://doi.org/10.1016/s0957-4166(01)00151-3
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ChemInform Abstract: Synthesis of Optically Active 1,2-Indene Oxide and Vicinal cis-Aminoindanols via Asymmetric Reduction of 2-Tolylsulfonyloxy-1-indanone with (-)-B-Chlorodiisopinocampheylborane
Autor: Ok Kyoung Choi, Byung Tae Cho
Publikováno v: ChemInform. 33
and Ok Kyoung ChoiDepartment of Chemistry, Hallym University, Chunchon, Kangwondo 200-702, KoreaReceived July 18, 2001Keywords : (−)-B-Chlorodiisopinocampheylborane, (1S,2R)-1,2-Indene oxide, (1S,2R)-1-Amino-2-indanol,(1S,2R)-2-Amino-1-indanol, Asy
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::32797f4fb8acb4f2e30d018b8c31176c
https://doi.org/10.1002/chin.200228129
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Facile Synthesis of Enantiopure 1,2-Diols and Terminal Epoxides from Chiral β-Hydroxy Sulfides
Autor: Ok Kyoung Choi, Dong Jun Kim, Byung Tae Cho
Publikováno v: ChemInform. 35
In recent years, manychemical and biological methods for the synthesis ofoptically active epoxides, such as asymmetric epoxidation ofolefins, resolution of racemic epoxides and indirect chemicaltransformation, have been reported. However, the directa
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6ae1e7bf906e4fbcd240ee5aeb4d852f
https://doi.org/10.1002/chin.200401032
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7
Enhancement of phase separation by the addition of de-emulsifiers to three-phase (diesel oil/biocatalyst/aqueous phase) emulsion in diesel biodesulfurization
Autor: Ok Kyoung, Choi, Kyung Suk, Choi, Hee Wook, Ryu, Yong Keun, Chang
Publikováno v: Biotechnology letters. 25(1)
Ethanol, added as a de-emulsifier to separate oil and biocatalyst (or bacterial cells) from a three-phase (oil/biocatalyst/aqueous phase) emulsion, formed in diesel biodesulfurization employing Gordonia nitida, improved oil recovery by centrifugation
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::92de0ed4608510c94c2f9f2c5abbbe2a
https://pubmed.ncbi.nlm.nih.gov/12882310
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9
Highly Efficient Synthesis of Chiral β-Hydroxy Sulfides with High Enantiomeric Purity via CBS-Oxazaborolidine-Catalyzed Borane Reduction
Autor: Byung Tae Cho, Ok Kyoung Choi, Dong Jun Kim
Publikováno v: ChemInform. 33:94-94
A simple and efficient synthesis of chiral β-hydroxy p -tolylsulfides with high enantiomeric purity by CBS-oxazaborolidine-catalyzed asymmetric borane reduction of β-keto p -tolylsulfides using N -ethyl- N -isopropylaniline–borane complex as the
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::808c69be9c9695e6d23894a7addd9dbc
https://doi.org/10.1002/chin.200240094
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10
Assessment of Coronary Flow Reserve with Adenosine Triphosphate Compared to the Response to Adenosine
Autor: Byungill Choi, Yun-Kyung Cho, Kyoung-Soo Lim, Seung-Jea Takh, Ok Kyoung Choi, Han Soo Kim, Won Kim, Joon-Han Shin
Publikováno v: Korean Circulation Journal. 28:863
Background:Previous studies have indicated adenosine triphosphate (ATP) is as potent coronary vasodillator as adenosine (A). We designed this study to compare the vasomotion of coronary artery (CA)between the infusion of ATP and that of A (1). Method
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::24d1b0b5f61eac57d8743ecba2bcccc8
https://doi.org/10.4070/kcj.1998.28.6.863
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