Application of environmental-friendly reactions in high-value compound synthesis : synthetic studies towards the total synthesis of dactylolide
This work aimed to demonstrate the feasibility of two environmental-friendly reactions that developed in Loh’s research group in the racemic synthesis of dactylolide (2), a marine natural product which is a potential candidate for anti-cancer treatment. Syntheses of two major components of dactyloli...
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sg-ntu-dr.10356-706032020-12-02T01:33:58Z Application of environmental-friendly reactions in high-value compound synthesis : synthetic studies towards the total synthesis of dactylolide Wong, Zhen Zhou Liu Chuan Fa Loh Teck Peng Interdisciplinary Graduate School Nanyang Environment and Water Research Institute DRNTU::Science::Chemistry::Organic chemistry::Organic synthesis This work aimed to demonstrate the feasibility of two environmental-friendly reactions that developed in Loh’s research group in the racemic synthesis of dactylolide (2), a marine natural product which is a potential candidate for anti-cancer treatment. Syntheses of two major components of dactylolide, namely C1-C8 fragment (C3-2) and C9-C19 fragment (AB-1b-I) were achieved in this study with two key strategies, which were In(OTf)3-catalyzed intramolecular 2,5-oxonium-ene cyclization and Pd-catalyzed direct cross-coupling reaction. Both strategies provided access to southern 2,6-syn-4-exomethylene tetrahydropyran motif and northern conjugated dienoate structure respectively. C9-C19 fragment (AB-1b-I) was convergently synthesized from two parallel syntheses, which provided conjugated aldehyde A2 and homoallylic alcohol B2-2 as precursor for tetrahydropyran synthesis. On the other hand, synthesis of C1-C8 fragment (C3-2) was achieved with a 5-step transformation from epichlorohydrin. This established route utilized convergent strategy, catalytic bond-forming reactions and employed less hazardous chemicals, which showed greener access to target fragments. Doctor of Philosophy (IGS) 2017-05-05T02:22:54Z 2017-05-05T02:22:54Z 2017 Thesis Wong, Z. Z. (2017). Application of environmental-friendly reactions in high-value compound synthesis : synthetic studies towards the total synthesis of dactylolide. Doctoral thesis, Nanyang Technological University, Singapore. http://hdl.handle.net/10356/70603 10.32657/10356/70603 en 239 p. application/pdf |
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DRNTU::Science::Chemistry::Organic chemistry::Organic synthesis Wong, Zhen Zhou Application of environmental-friendly reactions in high-value compound synthesis : synthetic studies towards the total synthesis of dactylolide |
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This work aimed to demonstrate the feasibility of two environmental-friendly reactions that developed in Loh’s research group in the racemic synthesis of dactylolide (2), a marine natural product which is a potential candidate for anti-cancer treatment. Syntheses of two major components of dactylolide, namely C1-C8 fragment (C3-2) and C9-C19 fragment (AB-1b-I) were achieved in this study with two key strategies, which were In(OTf)3-catalyzed intramolecular 2,5-oxonium-ene cyclization and Pd-catalyzed direct cross-coupling reaction. Both strategies provided access to southern 2,6-syn-4-exomethylene tetrahydropyran motif and northern conjugated dienoate structure respectively. C9-C19 fragment (AB-1b-I) was convergently synthesized from two parallel syntheses, which provided conjugated aldehyde A2 and homoallylic alcohol B2-2 as precursor for tetrahydropyran synthesis. On the other hand, synthesis of C1-C8 fragment (C3-2) was achieved with a 5-step transformation from epichlorohydrin. This established route utilized convergent strategy, catalytic bond-forming reactions and employed less hazardous chemicals, which showed greener access to target fragments. |
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Liu Chuan Fa |
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Liu Chuan Fa Wong, Zhen Zhou |
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Theses and Dissertations |
author |
Wong, Zhen Zhou |
author_sort |
Wong, Zhen Zhou |
title |
Application of environmental-friendly reactions in high-value compound synthesis : synthetic studies towards the total synthesis of dactylolide |
title_short |
Application of environmental-friendly reactions in high-value compound synthesis : synthetic studies towards the total synthesis of dactylolide |
title_full |
Application of environmental-friendly reactions in high-value compound synthesis : synthetic studies towards the total synthesis of dactylolide |
title_fullStr |
Application of environmental-friendly reactions in high-value compound synthesis : synthetic studies towards the total synthesis of dactylolide |
title_full_unstemmed |
Application of environmental-friendly reactions in high-value compound synthesis : synthetic studies towards the total synthesis of dactylolide |
title_sort |
application of environmental-friendly reactions in high-value compound synthesis : synthetic studies towards the total synthesis of dactylolide |
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2017 |
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http://hdl.handle.net/10356/70603 |
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1688665280986742784 |