|Speaker||Prof. Sunkyu Han|
|Date||Thursday 2 June 2016|
|Venue||#331, Asan Hall, College of Science|
Total Syntheses of Complex Alkaloids Inspired by Biosynthetic Hypotheses
One of the major goals of synthetic organic chemists is a controlled and rapid generation of complex molecules with high functional impact. Natural products, secondary metabolites produced by living organisms, can serve as outstanding platforms to achieve this goal. Structural complexity of natural products can spark the development of novel synthetic approaches and their biological activity can boost the discovery of new therapeutics.
Biological systems have developed enzymes for the formation of bonds that can streamline the assembly of secondary metabolites. We are interested in identifying those key bonds and developing chemical tools for the formation of those bonds, which would result in efficient total syntheses. Herein, I present the total syntheses of agelastatins,1 trigonoliimines2 and oxa-azaspirononedione containing natural products as examples of the biosynthetic hypotheses-guided synthetic approaches.
1. Han, S.; Siegel, D. S.; Morrison, K. C.; Hergenrother, P. J.; Movassaghi, M. “Synthesis and Anticancer Activity of all Known (–)-Agelastatin Alkaloids.” J. Org. Chem. 2013, 78, 11970.
2. Han, S.; Morrison, K.; Hergenrother, P. J.; Movassaghi, M. “Total Synthesis, Stereochemical Assignment, and Biological Activity of All Known (–)-Trigonoliimines.” J. Org. Chem. 2014, 79, 473.
Prof. Sunkyu Han
Department of Chemistry, KAIST, Republic of Korea
|Notice||Fall semester 2017 Seminar Schedule||-||-|
|29||[Thu. 1 Jun. 2017] Prof. Jong-Man Kim/Department of Chemical Engineering, Hanyang University, Seoul, Korea||Prof. Jong-Man Kim||Thu. 1 Jun. 2017|
|28||[Thu. 25 May. 2017] Prof. Wonsuk Kim/Department of Chemistry and Nano Science, Ewha Womans University, Seoul||Prof. Wonsuk Kim||Thu. 25 May. 2017|
|27||[Thu. 18 May. 2017] Student Host Colloquium : 1,1-Bisborylalkane: New Class of Organoboron Compound for the Chemo, Regio and Stereoselective Organic Transformations||Prof. Seung Hwan Cho||Thu. 18 May. 2017|
|26||[Thu. 11 May. 2017] Prof. Andreas Heinrich/IBS Research, Center for Quantum Nanoscience, Seoul, South Korea||Prof. Andreas Heinrich||Thu. 11 May. 2017|
|25||[Thu. 27 Apr. 2017] Seminar was canceled!||-||-|
|24||[Thu. 13 Apr. 2017] Dr. Wan Ki Bae/Photoelectronic Hybrid Research Center, Korea Institute of Science and Technology, Seoul, Korea||Dr. Wan Ki Bae||Thu. 13 Apr. 2017|
|23||[Thu. 6 Apr. 2017] Prof. Rong-Jie Chein/Institute of Chemistry, Academia Sinica, Nankang, Taipei, Taiwan||Prof. Rong-Jie Chein||Thu. 6 Apr. 2017|
|22||[Thu. 30 Mar. 2017] Prof. Jeong Ho Cho/SKKU Advanced Institute of Nanotechnology (SAINT), School of Chemical Engineering, Sungkyunkwan University, Suwon, Korea||Prof. Jeong Ho Cho||Thu. 30 Mar. 2017|
|21||[Thu. 23 Mar. 2017] Prof. Sangsu Bae/Department of Chemistry, Hanyang University, Seoul, South Korea||Prof. Sangsu Bae||Thu. 23 Mar. 2017|
|20||[Fri. 17 Mar. 2017] 9th RINS Symposium||-||Fri. 17 Mar. 2017|
|19||[Thu. 9 Mar. 2017] Prof. Woon Ju Song/Department of Chemistry, Seoul National University, Seoul, Korea||Prof. Woon Ju Song||Thu. 9 Mar. 2017|
|18||Spring semester 2017 Seminar Schedule||-||-|
|17||[Mon. 9 Jan. 2017] Prof. Sungwook Woo/Wyss Institute for Biologically Inspired Engineering, Harvard University, USA||Prof. Sungwook Woo||Mon. 9 Jan. 2017|
|16||[Wed. 28 Dec. 2016] Prof. James Y. Hamilton/Development of a Broad Range of Asymmetric C–C Bond Forming Reactions with a Versatile Iridium Catalyst||Prof. James Y. Hamilton||Wednesday 28 December 2016|
|15||[Thu. 1 Dec. 2016] Prof. Sang-Yong Ju/Highly Pure Carbon Nanotubes sorted by a Flavin for Thin Film Transistor Applications||Prof. Sang-Yong Ju||Thursday 1 December 2016|
|14||[Thu. 17 Nov. 2016] Prof. Seunghoon Shin/Synthetic Methods Development based on Rational Analysis of Intermediates||Prof. Seunghoon Shin||Thursday 17 November 2016|
|13||[Thu. 3 Nov. 2016] Prof. Min-Sik Kim/Mass spectrometry and its applications to Biological Discovery||Prof. Min-Sik Kim||Thursday 3 November 2016|
|12||[Thu. 20 Oct. 2016] Prof. Chan Hyuk Kim/Novel Small Molecule-based Approaches for Cancer Immunotherapy||Prof. Chan Hyuk Kim||Thursday 20 October 2016|
|11||[Mon. 13 Oct. 2016] Prof. Amir H. Hoveyda/Multicomponent Catalytic Synthesis of Organoboron Compounds for Scalable Natural Product Synthesis||Prof. Amir H. Hoveyda||Monday 13 October 2016|
|10||[Thu. 6 Oct. 2016] Prof. Young S. Park/Atomistic Molecular Engineering of Polycyclic Aromatic Hydrocarbons||Prof. Young S. Park||Thursday 6 October 2016|
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