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DOI: 10.1055/a-2152-0671
Prins Cyclization: Novel Strategy towards the Diastereoselective Total Synthesis of (–)-Cryptocaryolone
Financial support was provided by the Council of Scientific and Industrial Research (CSIR), New Delhi.


Abstract
A highly diastereoselective total synthesis of TBDPS-protected (–)-cryptocaryolone has been achieved in 12 linear steps with an overall yield of 7.1%, following a recently developed Prins cyclization strategy for the construction of trans-2,6-disubstituted 3,4-dihydropyrans. Another key intermediate, i.e. syn-1,3-diol, was prepared by the Wacker oxidation followed by a hydroxyl-directed syn-reduction of the keto functionality. In this report, the versatility of Prins cyclization in the total synthesis of TBDPS-protected (–)-cryptocaryolone is demonstrated. The key steps involved in the approach are Prins cyclization for the construction of the trans-2,6-disubstituted dihydropyran, Wacker oxidation and a hydroxyl-directed syn-reduction reaction.
Key words
Prins cyclization - Wacker oxidation - hydroxyl-directed syn-reduction - cryptocaryolone - bicyclic lactonesSupporting Information
- Supporting information for this article is available online at https://doi.org/10.1055/a-2152-0671.
- Supporting Information
Publication History
Received: 12 May 2023
Accepted: 10 August 2023
Accepted Manuscript online:
10 August 2023
Article published online:
16 October 2023
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