The progress towards the total synthesis of (ent)-MPC1001

Herein are my efforts toward the total synthesis of (ent)-MPC1001, beginning with the development of a novel asymmetric [1-3]-dipolar cycloaddition utilizing a vinyl silane and a chiral lactone template. The mechanism of the cycloaddition was investigated and the cyclized product can be elaborated in 6 steps to the A-B-C ring system of the MPC family of natural products. However, the key ring-closing metathesis reaction provided irreproducible results. Therefore, a macrolactonization was utilized to synthesize an advanced lactone derivative. Current research is focused on the elaboration of the lactone to the oxepin ring. Efforts were also focused on the development of a novel β-hydroxy-α-amino acid derivative to be used in the preparation of analogues of the natural product (ent)-MPC1001. The amino acid was efficiently prepared in six steps via a Mukaiyama aldol reaction by a chiral oxazinone and 3-bromo-4-methoxybenzaldehyde. With the dipole product and the β-hydroxyl-α-amino acid derivative in hand, efforts were focused on the coupling of the two components to afford the DKP. Research was also focused on the installation of the diaryl ether portion of (ent)-MPC1001 as well as an interesting dimerization reaction. The dimerization reaction can serve as a point of divergence to the aronotin family of natural products.

Name thesis:degree_name

Doctor of Philosophy (Ph.D.)

Level thesis:degree_level

Doctoral

Discipline thesis:degree_discipline

Chemistry

Grantor dc:publisher

Colorado State University. Libraries

Year dc:date.issued

2011

Authors dc:creator

• Schuber, Paul, author
• Williams, Robert M., advisor
• Crans, Debbie, committee member
• Finke, Richard, committee member
• McNaughton, Brian, committee member
• Slayden, Richard, committee member

Statement dc:rights

• Copyright and other restrictions may apply. User is responsible for compliance with all applicable laws. For information about copyright law, please see https://libguides.colostate.edu/copyright.

Language dc:language.iso

eng, English

Identifier URI

https://doi.org/10.25675/3.018957

Identifier

ETDF2011400272CHEM

OAI identifier oai:identifier

oai:mountainscholar.org:10217/70653