Journal
TETRAHEDRON
Volume 66, Issue 13, Pages 2514-2519Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2010.01.064
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A simple, convenient, six-step synthesis of novel, tricyclic pyrazinebenzodiazepinedione derivatives has been described. The strategy is based on the use of the orthogonally-protected, optically pure, (S)-piperazine-2-carboxylic acid, in a Petasis reaction, followed by coupling with anthranilic acid and finally cyclizing cleavage. The investigated method was applied for the synthesis of novel bicyclic pyrazinediaze-pinedione derivatives. This traceless, solid-supported approach allows the preparation of a wide variety of compounds in moderate yields from commercially available or easily obtainable reagents. (C) 2010 Elsevier Ltd. All rights reserved.
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