Yabu, K and Masumoto, S and Kanai, M and Curran, DP and Shibasaki, M
(2002)
Studies toward practical synthesis of (20S)-camptothecin family through catalytic enantioselective cyanosilylation of ketones: Improved catalyst efficiency by ligand-tuning.
Tetrahedron Letters, 43 (16).
2923 - 2926.
ISSN 0040-4039
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Abstract
Enantioselective catalyst efficiency for the synthesis of the camptothecin family was improved through ligand-tuning. Key intermediates of two convergent syntheses of camptothecin (Curran's intermediate and Corey's intermediate) were obtained in up to 10 g scale through the catalytic enantioselective cyanosilylation of ketones. © 2002 Elsevier Science Ltd. All rights reserved.
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