CC BY-NC-ND 4.0 · SynOpen 2022; 06(04): 306-311
DOI: 10.1055/a-1952-4557
paper

Practical, Multigram Preparation of Synthetically Useful, Enantiomerically Pure Building-Blocks from Quinic Acid

Shen Tan
a   Institute for Advanced and Applied Chemical Synthesis, College of Pharmacy, Jinan University, Guangzhou, Guangdong, 510632, P. R. of China
,
Ping Lan
a   Institute for Advanced and Applied Chemical Synthesis, College of Pharmacy, Jinan University, Guangzhou, Guangdong, 510632, P. R. of China
,
a   Institute for Advanced and Applied Chemical Synthesis, College of Pharmacy, Jinan University, Guangzhou, Guangdong, 510632, P. R. of China
b   Guangdong Key Laboratory for Research and the Development of Natural Drugs, The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, Guangdong 524023, P. R. of China
,
Lorenzo V. White
a   Institute for Advanced and Applied Chemical Synthesis, College of Pharmacy, Jinan University, Guangzhou, Guangdong, 510632, P. R. of China
› Author Affiliations
We thank the National Natural Science Foundation of China (Grant Nos. 22250410258 and 22250410259) and the Ministry of Science and Technology of the People’s Republic of China for financial support.


Abstract

The naturally abundant, enantiomerically pure cyclitol quinic acid has been converted into a synthetically useful enone in nearly quantitative yield using the operationally straightforward and reproducible protocols reported herein. The latter compound, which was obtained in multigram quantities, engages in a diastereoselective 1,2-addition reaction with a hydrazone-based nucleophile. Furthermore, a readily derived α-iodoenone participates in both cross-coupling and α,β-annulation reactions. The results reported here emphasize that the now practically accessible cyclohexenones are useful, enantiomerically pure building blocks for organic synthesis.

Supporting Information



Publication History

Received: 19 September 2022

Accepted after revision: 28 September 2022

Accepted Manuscript online:
28 September 2022

Article published online:
21 November 2022

© 2022. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)

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