Synthesis of Phenyl-​2,​2'-​bichalcophenes and Their Aza-​Analogues by Catalytic Oxidative Deacetylation
Jiang, Xia; Jin, Hui; Wang, Tingshu; Yoo, Hyebin; Koo, Sangho*
Synthesis2019, Ahead of Print.

Bromoacetate Olefination Protocol for Norbixin and Julia-​Kocienski Olefination for Its Ester Syntheses
Kim, Dahye; Alam, Mohammad Shariful; Chung, Wook-Jin; Koo, Sangho*
ACS Omega20194(6), 10019-10024.

Fast Assembly and High-Throughput Screening of Structure and Antioxidant Relationship of Carotenoids
Kim, Dahye; Shi, Gaosheng; Kim, YunJi; Koo, Sangho*
Organic Letters201921(3), 714-718.

Lycorin Displays Potent Antitumor Efficacy in Colon Carcinoma by Targeting STAT3
S. Wu, Y. Qiu, Y. Shao, S. Yin, R. Wang, X. Pang, J. Ma, C. Zhang, B. Wu, S. Koo, L. Han, Y. Zhang, X. Gao, T. Wang, H. Yu*
frontiers in Pharmacology, 2018, 9, Article 881.

Role of Ring Ortho Substituents on the Configuration of Carotenoid Polyene Chains
M. Kim, H. Jung, A. C. Aragones, I. Diez-Perez, K.-H. Ahn, W.-J. Chung, D. Kim, S. Koo*
Organic Letters, 2018
, 20, 493-496.

Deprotection of durable benzenesulfonyl protection for phenols – efficient synthesis of polyphenols
M. S. Alam, S. Koo,*
Synth. Commun., 2018 , 48, 247-254.

Aerosol Cross-Linked Crown Ether Diols Melded with Poly(vinyl alcohol) as Specialized Microfibrous Li+ Adsorbents
L. A. Limjuco, G. M. Nisola, R. E. C. Torrejos, J. W. Han, H. S. Song, K. J. Parohinog, S. Koo, S.-P. Lee, W.-J. Chung
ACS Appl. Mater. Interfaces, 2017, 9, 42862-42874.

Systematic synthesis of diphenyl-substituted carotenoids as molecular wires
B. Lim, E.-T. Oh, J.O. Im, K. S. Lee, H. Jung, M. Kim, D. Kim, J. T. Oh, S.-H. Bae, W.-J. Chung, K.-H. Ahn, S. Koo,*
Eur. J. Org. Chem. 2017, 6390-6400.

Aethusifolins A–D: Four new components from a traditional Mongolian medicinal herb Clematis aethusifolia Turcz
Y. Chang, P. Zhang, J. Jurhiin, X. Zhang, W. Borgihiin, H. Zhao, S. Koo, W.-D. Rausch, B. Agula, B. Bao
Phytochem. Lett. 2017, 22, 87-91.

Design of lithium selective crown ethers: Synthesis, extraction and theoretical binding studies
R. E. C. Torrejos, G. M. Nisola, H. S. Song, L. A. Limjuco, C. P. Lawagon, K. J.Parohinog, S. Koo, J. W. Han, W.-J. Chung
Chem. Engineer. J. 2017, 326, 921-933.

Efficient preparation method of 4-hydroxybenzoic esters – Oxidation of substituted Hagemman’s ester
S. Kang, D. Kim, I. J. In, S. Koo,*
Tetrahedron Lett. 2017, 58, 2264-2266.

Liquid-liquid extraction of lithium using lipophilic dibenzo-14-crown-4 ether carboxylic acid in hydrophobic room temperature ionic liquid
R. E. C. Torrejos, G. M. Nisola, H. S. Song, J. W. Han, C. P. Lawagon, J. S. Seo, S. Koo, H. Kim, W.-J. Chung
2016, 164, 362-371.

Synthesis of Tribenzotropone by Ring Expansion of Phenanthren-9,10-dione
J. Choi, H. Jung, J. E. Yeo, S. Koo,*
Synthesis 2015, 47, 2971-2975.

One-Pot Conversion of Carbohydrates into Pyrrole-2-Carbaldehydes as Sustainable Platform Chemicals
A. Nirmal Das, S. Kwon, W.-J. Chung, S. Koo,*
J. Org. Chem. 2015, 80, 7693-7701.

Fine-tuning of single-molecule conductance by tweaking both electronic structure and conformation of side substituents
A. Aragones, N. Darwish, J.O. Im, B. Lim, J. Choi, S. Koo,*
D.-P. Ismael,* Chem. Eur. J. 2015, 21, 7716-7720.

Esterification of carboxylic acids with alkyl halides using imidazolium based dicationic ionic liquids containing bis-trifluoromethane sulfonimide anions at room temperature
A. H. Jadhav, K. Lee, S. Koo, J. G. Seo,*
RSC Advances,
2015, 5, 26197-26208.

Enhanced biological activity of carotenoids stabilized by phenyl groups
J. Byun, S. Koo,* S. S. Choi,*
Food Chem, 2015, 177, 339-345.

A Chain Extension Method for Apocarotenoids; Lycopene and Lycophyll Syntheses
Choi,E.-T. Oh, S. Koo,*
Arch. Biochem. Biophys. 2015, 572, 142-150.

Tandem Catalytic Oxidative Deacetylation of Acetoacetic Esters and Hetero Aromatic Cyclizations
Y. Ju, D. Miao, R. Yu, S. Koo,*
Org. Biomol. Chem. 2015, 13, 2588-2599.

Synthesis and characterization of multi-walled carbon nanotubes-supported dibenzo-14-crown ether with proton ionizable carboxyl sidearm as Li+ adsorbents
R. E. C. Torrejos, G. M. Nisola,M. J. Park, H. K. Shon, J. G. Seo, S. Koo, W.-J. Chung,
Chem. Engineer. J. 2015, 264, 89-98.

Regioselective Synthesis of 1,3- and 1,2-Tocopheryl Glyceride Ethers of Carboxylic Acids
B.S. Choi, J. Choi, S. Bak, S. Koo,*
Eur. J. Org. Chem. 2015, 514-524.

Resonance Raman Spectra of Carotenoid Molecules: Influence of Methyl Substitutions
M.Macernis,* D. Galzerano, J. Sulskus, E. Kish, Y.-H. Kim, S. Koo, L. Valkunas, B. Robert, J.
Phys. Chem. A. 2015, 119, 56-66.

Catalytic Oxidation of beta-Ketoester by Mn(III)/Co(II) and Consecutive Cyclization to Heterocycles
Y. Ju, D. Miao, J. G. Seo, S. Koo,*
Adv. Synth. Catal. 2014, 356, 3059-3066.

Sulfone-Mediated Syntheses of Crocetin Derivatives: Regioselectivity of Highly Functionalized Building Blocks
E.-T. Oh, Y.-H. Kim, J. Jin, L. Su, J.-A. Seo, S. Koo,*
J. Org.Chem. 2014, 79, 4712-4715.

Combined Effect of Polar Substituents on the Electronic Flows in the Carotenoid Molecular Wires
Y. Zhao, S. Lindsay,* S. Jeon, H.-J. Kim, L. Su, B. Lim, S. Koo,*
Chem. Eur. J. 2013, 19, 10832-10835.

Mechanism and Scope of the Mn(III)-Initiated Oxidation of beta-Ketocarbonyl Compounds;
the Furan Synthesis

C. Wang, Z. Li, Y. Ju, S. Koo,*
Eur. J. Org. Chem. 2012, 6976-6985.

Bis-sulfonic Acid Ionic Liquids for the Conversion of Fructose to 5-Hydroxymethyl-2-furfural
S. E. Sim, S. Kwon, S. Koo,*
2012, 17, 12804-12811.

Synthesis of Coenzyme Q-10
E.-T. Oh, H. J. Kim, J. T. Oh, L. Su, I. Yun, K. Nam, J.-H. Min, J. W. Kim, S. Koo,*
Eur. J. Org. Chem. 2012, 4954-4962.

Mn(III)-Promoted Tandem Oxidation and Cyclization of β-Ketoester Derivatives of Terpenoids
Z. Li, H. Jung, M. Park, M. Lah, S. Koo,*
Adv. Synth. Catal. 2011, 353, 1913-1917.

Selective Deoxygenation of Allylic Alcohol; Stereo-controlled Synthesis of Lavandulol
H. J.Kim, L. Su, H. Jung, S. Koo,*
Organic Letters, 2011, 13, 2682-2685.

Ultrafast excited state dynamics and spectroscopy of 13,13'-diphenyl-β-carotene
K.Golibrzuch, F. Ehlers, M. Scholz, R. Oswald, T. Lenzer, K. Oum,* H. Kwon, S. Koo,*
Phys.Chem. Chem. Phys. 2011, 13, 6340-6351.

Convergent synthesis of new types of stabilized carotenoid compounds
S. B. Kim, H. Kim, B.Lim, J. Maeng, S.-H. Bae, E. Choi, J. T. Oh, I. Hong, S.-Y. Jung, J. E. Yeo, S. Koo,*
Pure Appl.Chem. 2011, 83, 613-620.

Conductance Control in the Stabilized Carotenoid Wires
J. Maeng, S. B. Kim, N. J. Lee, E.Choi, S.-Y. Jung, I. Hong, S.-H. Bae, J. T. Oh, B. Lim, J. W. Kim, }
C. J. Kang, S. Koo,*
Chem. Eur. J. 2010, 16, 7395-7399.

Synthesis of highly conductive poly(3,4-ethylenedioxythiophene) fiber by simple chemical polymerization
W. Baik, W. Luan, R. H. Zhao, S. Koo, K.-S. Kim,
Synth. Metals 2009, 159, 1244-1246.

Ring-Expansion Protocol: Preparation of Synthetically Versatile Dihydrotropones
Y.-S. Do, R. Sun, H. J. Kim, J. E. Yeo, S.-H. Bae, S. Koo,*
J. Org. Chem. 2009, 74, 917-920.

General Preparation and Controlled Cyclization of Acyclic Terpenoids
J. Kuk, B. S. Kim, H. Jung, S. Choi, J.-Y. Park, S. Koo,*
J. Org. Chem. 2008, 73, 1991-1994.

Expeditious and Practical Synthesis of Lycopene
E. Choi, J. E. Yeo, S. Koo,*
Adv. Synth. Catal. 2008, 350, 365-369.

Stereoselective Synthesis of Allylic Sulfones via the Oxonia-Cope Rearrangement of Homoallylic Alcohols Containing a Homoallylic Sulfone Moiety
S.-Y. Jung, J.-H. Min, J. T. Oh, S. Koo,*
J. Org. Chem. 2006, 71, 4823-4828.

Origin of the Diastereoselection in the Indium-mediated Addition of Haloallylic Sulfones to Aldehydes
J.-H. Min, S.-Y. Jung, B. Wu, J. T. Oh, M. S. Lah, S. Koo,*
Organic Letters, 2006, 8, 1459-1462.

TMS.OTf-Catalyzed α-bromination of carbonyl compounds by N-bromosuccinimide
S. K. Guha, B. Wu, B. S. Kim, W. Baik, S. Koo,*
Tetrahedron Lett. 2006, 47, 291-293.

Sulfone Coupling and Double Elimination Strategy for Carotenoid Synthesis
S. K. Guha, S. Koo,*
J. Org. Chem. 2005, 70, 9662-9665.

Preparation of 1,4-hydrobenzoquinones by the PCC/SiO2-promoted double oxidation of 3-cyclohexene-1,2-diols
H. J. Kim, S. Koo,*
Org. Biomol. Chem. 2005, 3, 3479-3481.

Efficient one-pot transformation of aminoarenes to haloarenes using halodimethylisulfonium halides generated in situ
W. Baik,* W. Luan, H. J. Lee, C. H. Yoon, S. Koo, B. H. Kim,
Can. J. Chem. 2005, 83, 213-219.

Efficient Syntheses of Keto-carotenoid Canthaxanthin, Astaxanthin, and Astacene
S. Choi, S. Koo,*
J. Org. Chem. 2005, 70, 3328-3331.

Stereoselective and Convergent Syntheses of Retinoic Acid and Its Ester Derivatives by the Sulfone Olefination Reaction
H.-S. Jeon, J. E. Yeo, Y. C. Jeong, S. Koo,*
Synthesis, 2004, 2813-2820.

General and systematic synthetic entry to carotenoid natural products
Y. C. Jeong, M. Ji, J. S.Lee, J.-D. Yang, J. Jin, W. Baik, S. Koo,*
Tetrahedron 2004, 60, 10181-10185.

Lewis acid-catalyzed reactions of anthrone: Preference for cycloaddition reaction over conjugate addition depending on the functionality of α,β-unsaturated carbonyl compounds
W. Baik,* C. H. Yoon, S. Koo, H. Kim, J. Kim, J. Kim, S. Hong.
Bull. Korean Chem. Soc. 2004, 25, 491-500.

Preparation of the conjugated polyene chains with the 1,4-dimethyl substitution
H.-S. Jeon, S. Koo,*
Tetrahedron Lett. 2004, 45, 7023-7026.

A computational Investigation of the Stability of Cyclopropyl Carbenes
W. Baik,* C. H. Yoon, S. Koo, B. H. Kim,
Bull. Korean Chem. Soc. 2004, 25, 90-96.

Highly Efficient and General Synthetic Method of Various Retinyl Ethers
J. S. Lee, Y. C. Jeong, M. Ji, W. Baik. S. Lee, S. Koo,*
Synlett 2004, 1937-1940.

The intramolecular Baylis-Hillman reaction: easy preparation of versatile substrates, facile reactions, and synthetic applications
J.-E. Yeo, X. Yang, H. J. Kim, S. Koo,*
Chem. Commun. 2004, 236-237.

The Friedel-Crafts Allylation of a Prenyl Group Stabilized by a Sulfone Moiety - Expeditious Syntheses of Ubiquinones and Menaquinones
J.-H. Min, J.-S. Lee, J.-D. Yang, S. Koo,*
J. Org. Chem. 2003, 68, 7925-7927.

Allylic Triene Sulfones as Key Synthons for Carotenoid Synthesis
M. Ji, H. Choi, Y. C. Jung, J. Jin, W. Baik, S. Lee, J. S. Kim, M. Park, S. Koo,*
Helv. Chim. Acta 2003, 86, 2620-2628.

Identification of FM001 as Plant Growth-Promoting Substance from Acremonium strictum MJN1 Culture
J.-H. Jung, D.-M. Shin, W.-C. Bae, S.-K. Hong, J.-W. Suh, S. Koo, B.-C. Jeong,*
J. Microbiol. Biotech. 2002, 12, 327-330.

Mn(III)-Mediated Radical Cyclization for △1-3-Octalone Synthesis
M. Lee, J.-D. Yang, M.-S. Kim, H.-S. Jeon, W. Baik, S. Koo,*
Bull. Korean Chem. Soc. 2002, 23, 736-740.

The Reactivity and Stability Studies of Benzoquinone Methides by Ab Initio Calculations
W. Baik,* S. J. Kim, E.-Y. Hurh, S. Koo, B. H. Kim.
Bull. Korean Chem. Soc. 2001, 22, 1127-1130.

Selective Oxidation of Allylic Sulfides by Hydrogen Peroxide with Trirutile-type Solid Oxide Catalyst - LiNbMoO6
S. Choi, J.-D. Yang, M. Ji, H. Choi, M. Kee, K.-H. Ahn, S.-H. Byeon, W. Baik, S. Koo,*
J. Org. Chem. 2001, 66, 8192-8198.

Highly Efficient Chain-extension Process in the Systematic Syntheses of Carotenoid Natural Products
M. Ji, H. Choi, M. Park, M. Kee, Y. C. Jeong, S. Koo,*
Angew. Chem., Int. Ed. 2001, 40, 3627-3629.

Highly Efficient Synthesis of Bicyclo[3.3.1]nonane Skeleton
J.-D. Yang, M.-S. Kim, M. Lee, W. Baik, S. Koo,*
Synthesis 2000, 801-804.

NBS-Promoted Reactions of Symmetrically Hindered Methylphenols via p-Benzoquinone Methide
W. Baik,* H. J. Lee, J. M. Jang, S. Koo, B. H. Kim,
J. Org. Chem. 2000, 65, 108-115.

Diallylic Sulfides as Key Structures for Carotenoid Syntheses
H. J. Choi, M. Ji, M. Park, I.-K. Yun, S.-S. Oh, W. Baik, S. Koo,*
J. Org. Chem. 1999, 64, 8051-8053.

Photostimulated Reductive Cyclization of o-Nitrophenylazo Dyes Using Sodium Hydroxide in Isopropyl Alcohol. A New Synthesis of 2-Aryl-2H-benzotriazoles
W. Baik,* C. H. Yoo, S. Koo, H. Kim, Y. H. Hwang, B. H. Kim, S. W. Lee
Heterocycles 1999, 51, 1779-1783.

LiAlH4 Promoted Reductive Deoxygenation of Hydroxybenzyl Alcohols via Benzoquinone Methide Intermediates
W. Baik,* H. J. Lee, S. Koo, B. H. Kim
Tetrahedron Lett. 1998, 39, 8125-8128.

Chemoselective Reactions of Anthrone with α,β-Unsaturated Ketones
W. Baik,* C. H. Yoon, K. C. Lee, H. J. Lee, S. Koo, J. Kim, B. Yoon, H. Kim
J. Chem. Res. 1998, 358-359.

Highly Efficient Synthesis of Methyl-Substituted Conjugate Cyclohexenones
B.-D. Chong, Y.- I. Ji, S.-S. Oh, J.-D. Yang, W. P. Baik, S. Koo,*
J. Org. Chem. 1997, 62, 9323-9325.

Microbial Deoxygenation of N-Oxides with Baker's Yeast-NaOH
W. Baik,* D. I. Kim, S. Koo, J. U. Rhee, S. H. Shin, B. H. Kim
Tetrahedron Lett. 1997, 38, 845-848.

General Synthetic Entry to Highly-Oxygenated Angularly-Fused Polycyclic Aromatic Compounds
S. Koo, L. S. Liebeskind,*
J. Am. Chem. Soc. 1995, 117, 3389-3404.