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  4. Enantioselective Total Synthesis of (+)-Nordasycarpidone, (+)-Dasycarpidone, and (+)-Uleine
 
research article

Enantioselective Total Synthesis of (+)-Nordasycarpidone, (+)-Dasycarpidone, and (+)-Uleine

Delayre, Bastien  
•
Fung, Cedric  
•
Wang, Qian
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July 6, 2021
Helvetica Chimica Acta

The structure of uleine type alkaloids is characterized by the presence of a bridged tetracyclic hexahydro-1H-1,5-methanoazocino[4,3-b]indole ring system 1. Various strategies have been developed to access this polycyclic structural motif. We report herein a one-step conversion of appropriately functionalized 1,3,4-trisubstituted cyclopent-1-ene to 1 by way of an integrated oxidation/reduction/cyclization (iORC) process. This domino sequence, initiated by oxidative cleavage of cyclopentene ring, generated subsequently a cyclohexenone, an indole and a 1,3-bridged piperidine ring through formation of one C-C and two C-N bonds. Compound 1 is subsequently converted to nordasycarpidone, dasycarpidone and uleine. The chirality of the molecule was introduced by enzymatic desymmetrization of commercially available meso cis-3,5-diacetoxy-1-cyclopentene.

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Type
research article
DOI
10.1002/hlca.202100088
Web of Science ID

WOS:000669963200001

Author(s)
Delayre, Bastien  
Fung, Cedric  
Wang, Qian
Zhu, Jieping  
Date Issued

2021-07-06

Published in
Helvetica Chimica Acta
Volume

104

Issue

8

Article Number

e2100088

Subjects

Chemistry, Multidisciplinary

•

Chemistry

•

asymmetric synthesis

•

cross-coupling

•

domino reactions

•

monoterpene indole alkaloids

•

reductive cyclization

•

uleine

•

alkaloids

•

framework

•

route

Note

This is an Open Access article under the terms of the Creative Commons Attribution License

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LSPN  
Available on Infoscience
July 17, 2021
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/179942
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