Volume 22, Issue 9 pp. 1022-1028
Article
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A chiron-based approach for the synthesis of tricyclic tyrosine analogue

Fa Liu

Fa Liu

State Key Laboratory of Bioorganic and Natural Product Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China

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Jiao Jiao

Jiao Jiao

State Key Laboratory of Bioorganic and Natural Product Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China

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Hui-Yan Zha

Hui-Yan Zha

State Key Laboratory of Bioorganic and Natural Product Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China

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Zhu-Jun Yao

Zhu-Jun Yao

State Key Laboratory of Bioorganic and Natural Product Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China

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First published: 26 August 2010
Citations: 4

Dedicated to Professor Chengye Yuan on the occasion of his 80th birthday.

Abstract

A chiron approach-based enantioselective synthesis of designed tricyclic tyrosine analogue D-2 was developed. A SmI2-mediated free radical cyclization, an intramolecular Friedel-Crafts reaction and an intramolecular Mannich reaction served as key steps. These key steps were optimized and repeated in good yields. All the stereochemistries in the synthesis were established and confirmed.

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