Works by Keum, Sam Rok

Results: 12

Novel stilbene-based Fischer base analog of leuco-TAM - (2E,2'Z)-{2-(4-(E)-styrylphenyl) propane-1,3-diylidene}bis(1,3,3-trimethylin doline)-derivatives: synthesis and structural consideration by 1D NMR and 2D NMR spectroscopy.

Published in:

Magnetic Resonance in Chemistry, 2016, v. 54, n. 2, p. 143, doi. 10.1002/mrc.4359

By:

Sam-Rok Keum;
Hyun-Woo Lim

Publication type:

Article

Dicondensed indolinobenzospiropyrans as precursors of thermo- and photochromic spiropyrans. Part II: assignment of 1H and 13C NMR spectra.

Published in:

Magnetic Resonance in Chemistry, 2006, v. 44, n. 1, p. 90, doi. 10.1002/mrc.1718

By:

Keum, Sam-Rok;
Ahn, Su-Mi;
Roh, Se-Jung;
Park, Su-Jin;
Kim, Sung-Hoon;
Koh, Kwangnak

Publication type:

Article

Rearrangement mechanisms for azoxypyridines and azoxypyridine N-oxides in the 100% H2SO4 region — The Wallach rearrangement story comes full circle1.

Published in:

Canadian Journal of Chemistry, 2009, v. 87, n. 8, p. 1127, doi. 10.1139/V09-080

By:

Buncel, Erwin;
Sam-Rok Keum;
Rajagopal, Srinivasan;
Cox, Robin A.

Publication type:

Article

Wallach rearrangement of azoxypyridines and azoxypyridine N-oxides — Charge distributions and dramatic reactivity differences.

Published in:

Canadian Journal of Chemistry, 2008, v. 86, n. 4, p. 298, doi. 10.1139/V08-016

By:

Buncel, Erwin;
Sam-Rok Keum;
Rajagopal, Srinivasan;
Kiepek, Eric;
Cox, Robin A.

Publication type:

Article

Azo-functionalized dendrimers.

Published in:

Canadian Journal of Chemistry, 2004, v. 82, n. 4, p. 551, doi. 10.1139/v04-009

By:

Cheon, Kap-Soo;
Kazmaier, Peter M.;
Keum, Sam-Rok;
Park, Kuk-Tae;
Buncel, Erwin

Publication type:

Article

Inhibitory effect of pyridyloxy- or phenoxylphenoxyalkanate derivatives on rat lens aldose reductase and rat platelet aggregation.

Published in:

Journal of Pharmacy & Pharmacology, 2004, v. 56, n. 7, p. 941

By:

Soon Sung Lim;
Kuk Hyun Shin;
Sang Hoon Jung;
Kye Jung Shin;
Dong Chan Kim;
Sang Woo Park;
Hyun Kyung Shin;
Sam Rok Keum

Publication type:

Article

Inhibition of prostaglandin E2 production by 2′-hydroxychalcone derivatives and the mechanism of action.

Published in:

Journal of Pharmacy & Pharmacology, 2001, v. 53, n. 9, p. 1295, doi. 10.1211/0022357011776595

By:

Kim, Yong Pil;
Ban, Hyun Seung;
Lim, Soon Sung;
Kimura, Natsuko;
Jung, Sang Hoon;
Ji, Jun;
Lee, Sanghyun;
Ryu, Nama;
Keum, Sam Rok;
Shin, Kuk Hyun;
Ohuchi, Kazuo

Publication type:

Article

Synthesis of flavonoids and their effects on aldose reductase and sorbitol accumulation in streptozotocin-induced diabetic rat tissues.

Published in:

Journal of Pharmacy & Pharmacology, 2001, v. 53, n. 5, p. 653, doi. 10.1211/0022357011775983

By:

Lim, Soon Sung;
Jung, Sang Hoon;
Ji, Jun;
Shin, Kuk Hyun;
Keum, Sam Rok

Publication type:

Article

Novel Reductive Cleavage Reaction of Thiobenzoates with Samarium Diiodide: Convenient Synthesis of Disulfides.

Published in:

Synthetic Communications, 2000, v. 30, n. 23, p. 4317, doi. 10.1080/00397910008087054

By:

Yoo, Byung Woo;
Baek, Heung Soo;
Keum, Sam Rok;
Yoon, Cheol Min;
Nam, Ghil Soo;
Kim, Sung Hoon;
Kim, Joong Hyup

Publication type:

Article

Synthesis of 7-Hydroxyspiropyran.

Published in:

Synthetic Communications, 2000, v. 30, n. 12, p. 2205, doi. 10.1080/00397910008087399

By:

Cho, Young Jin;
Lee, Seung Hwan;
Bae, Jong Woo;
Kim, Sung Hoon;
Keum, Sam Rok;
Yoon, Cheol Min

Publication type:

Article

Synthesis of 1,3-Diketones by Reaction of α -Haloketones with Acyl Cyanides Promoted by Samarium Diiodide.

Published in:

Synthetic Communications, 2000, v. 30, n. 1, p. 31, doi. 10.1080/00397910008087289

By:

Baek, Heung Soo;
Yoo, Byung Woo;
Keum, Sam Rok;
Yoon, Cheol Min;
Kim, Sung Hoon;
Kim, Joong Hyup

Publication type:

Article

Synthesis of Conjugated Spiropyran Dyes via Palladium-Catalyzed Coupling Reaction.

Published in:

Synthetic Communications, 1999, v. 29, n. 12, p. 2061, doi. 10.1080/00397919908086198

By:

Cho, Young Jin;
Rho, Kee Yoon;
Rok Keum, Sam;
Kim, Sung Hoon;
Yoon, Cheol Min

Publication type:

Article

Works by Keum, Sam Rok

Novel stilbene-based Fischer base analog of leuco-TAM - (2E,2'Z)-{2-(4-(E)-styrylphenyl) propane-1,3-diylidene}bis(1,3,3-trimethylin doline)-derivatives: synthesis and structural consideration by 1D NMR and 2D NMR spectroscopy.

Dicondensed indolinobenzospiropyrans as precursors of thermo- and photochromic spiropyrans. Part II: assignment of <sup>1</sup>H and <sup>13</sup>C NMR spectra.

Rearrangement mechanisms for azoxypyridines and azoxypyridine N-oxides in the 100% H<sub>2</sub>SO<sub>4</sub> region — The Wallach rearrangement story comes full circle<sup>1</sup>.

Wallach rearrangement of azoxypyridines and azoxypyridine N-oxides — Charge distributions and dramatic reactivity differences.

Azo-functionalized dendrimers.

Inhibitory effect of pyridyloxy- or phenoxylphenoxyalkanate derivatives on rat lens aldose reductase and rat platelet aggregation.

Inhibition of prostaglandin E<sub>2</sub> production by 2′-hydroxychalcone derivatives and the mechanism of action.

Synthesis of flavonoids and their effects on aldose reductase and sorbitol accumulation in streptozotocin-induced diabetic rat tissues.

Novel Reductive Cleavage Reaction of Thiobenzoates with Samarium Diiodide: Convenient Synthesis of Disulfides.

Synthesis of 7-Hydroxyspiropyran.

Synthesis of 1,3-Diketones by Reaction of α -Haloketones with Acyl Cyanides Promoted by Samarium Diiodide.

Synthesis of Conjugated Spiropyran Dyes via Palladium-Catalyzed Coupling Reaction.