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Short Paper | Special issue | Vol 97, No. 1, 2018, pp.514-522
Published online, 19th December, 2017
DOI: 10.3987/COM-17-S(T)6
Concise Approach to Mono- and Disubstituted Luotonin A Analogs and Their Cytotoxicity Test

Natsuko Kagawa,* Kimiko Nishimura, Shinya Abe, Takashi Masuko, and Masahiro Toyota*

*Department of Chemistry, Graduate School of Science, Osaka Prefecture University, 1-1 Gakuencho, Sakai, Osaka 599-8531, Japan

Abstract

A concise approach for the preparation of luotonin A analogs has been developed. The new synthetic route contains an anion-assisted intramolecular double hetero Diels ̶ Alder reaction and a direct oxidative cross coupling reaction. Some synthetic luotonin A analogs show cytotoxic activities against Daudi and Jurkat human cancer cells as potent as camptothecin.