Synthesis of curvulone B and allahabadolactone, and the development of a diastereoselective Tsuji-Trost cyclisation

The first chapter describes the synthesis of curvulone B featuring a strategy of cross metathesis and oxa-Michael addition in the construction of the desired cis-THP ring. This strategy is one of the most effective tools in the synthesis of THP rings containing natural products. o-Chlorobenzyl ether...

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Main Author: Wang, Kongchen
Other Authors: Roderick Wayland Bates
Format: Theses and Dissertations
Language:English
Published: 2017
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Online Access:http://hdl.handle.net/10356/73049
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-730492023-03-01T00:01:30Z Synthesis of curvulone B and allahabadolactone, and the development of a diastereoselective Tsuji-Trost cyclisation Wang, Kongchen Roderick Wayland Bates School of Physical and Mathematical Sciences DRNTU::Science::Chemistry::Organic chemistry::Organic synthesis The first chapter describes the synthesis of curvulone B featuring a strategy of cross metathesis and oxa-Michael addition in the construction of the desired cis-THP ring. This strategy is one of the most effective tools in the synthesis of THP rings containing natural products. o-Chlorobenzyl ether was developed as a new protecting group for alcohols and proved to be a reliable protecting group under Lewis acidic condition. Chapter two describes the development of a diastereoselective Tsuji-Trost cyclisation. This method was applied in the synthesis of multi-substituent six-membered rings. Chapter three describes the total synthesis of allahabadolactone A though a route featuring alkyne hydroboration, stereospecific Suzuki coupling and an intramolecular Diels-Alder (IMDA) reaction. This work confirmed the superiority of the aldehyde as an electron withdrawing group for the IMDA reaction and, for the first time, demonstrated the unsuitability of the alkyne substituent in the IMDA reaction. Also, the absolute stereochemistry of allahabadolactone A was confirmed by the synthesis. Meanwhile, a new Rh catalyst was prepared with (2-furyl)3P ligand, which could be utilized efficiently in the hydroboration of terminal alkynes. ​Doctor of Philosophy (SPMS) 2017-12-27T03:35:24Z 2017-12-27T03:35:24Z 2017 Thesis Wang, K. (2017). Synthesis of curvulone B and allahabadolactone, and the development of a diastereoselective Tsuji-Trost cyclisation. Doctoral thesis, Nanyang Technological University, Singapore. http://hdl.handle.net/10356/73049 10.32657/10356/73049 en 173 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Science::Chemistry::Organic chemistry::Organic synthesis
spellingShingle DRNTU::Science::Chemistry::Organic chemistry::Organic synthesis
Wang, Kongchen
Synthesis of curvulone B and allahabadolactone, and the development of a diastereoselective Tsuji-Trost cyclisation
description The first chapter describes the synthesis of curvulone B featuring a strategy of cross metathesis and oxa-Michael addition in the construction of the desired cis-THP ring. This strategy is one of the most effective tools in the synthesis of THP rings containing natural products. o-Chlorobenzyl ether was developed as a new protecting group for alcohols and proved to be a reliable protecting group under Lewis acidic condition. Chapter two describes the development of a diastereoselective Tsuji-Trost cyclisation. This method was applied in the synthesis of multi-substituent six-membered rings. Chapter three describes the total synthesis of allahabadolactone A though a route featuring alkyne hydroboration, stereospecific Suzuki coupling and an intramolecular Diels-Alder (IMDA) reaction. This work confirmed the superiority of the aldehyde as an electron withdrawing group for the IMDA reaction and, for the first time, demonstrated the unsuitability of the alkyne substituent in the IMDA reaction. Also, the absolute stereochemistry of allahabadolactone A was confirmed by the synthesis. Meanwhile, a new Rh catalyst was prepared with (2-furyl)3P ligand, which could be utilized efficiently in the hydroboration of terminal alkynes.
author2 Roderick Wayland Bates
author_facet Roderick Wayland Bates
Wang, Kongchen
format Theses and Dissertations
author Wang, Kongchen
author_sort Wang, Kongchen
title Synthesis of curvulone B and allahabadolactone, and the development of a diastereoselective Tsuji-Trost cyclisation
title_short Synthesis of curvulone B and allahabadolactone, and the development of a diastereoselective Tsuji-Trost cyclisation
title_full Synthesis of curvulone B and allahabadolactone, and the development of a diastereoselective Tsuji-Trost cyclisation
title_fullStr Synthesis of curvulone B and allahabadolactone, and the development of a diastereoselective Tsuji-Trost cyclisation
title_full_unstemmed Synthesis of curvulone B and allahabadolactone, and the development of a diastereoselective Tsuji-Trost cyclisation
title_sort synthesis of curvulone b and allahabadolactone, and the development of a diastereoselective tsuji-trost cyclisation
publishDate 2017
url http://hdl.handle.net/10356/73049
_version_ 1759858237494001664