N-(p-Methoxybenzyl) groups in some diketopiperazine derivatives were proved to be readily and efficiently removed with ceric ammonium nitrate in acetonitrile-water under mild conditions, where N-benzyl , methoxyl in the aminal structure, and isolated vinyl groups remained unchanged.
The solution phase synthesis of diketopiperazine libraries via the Ugi reaction: Novel application of Armstrong's convertible isonitrile
作者:Christopher Hulme、Matthew M. Morrissette、Francis A. Volz、Christopher J. Burns
DOI:10.1016/s0040-4039(97)10795-x
日期:1998.3
communication describes the generation of high-yielding solution phase diketopiperazine libraries via a ‘3-step, 1-pot’ procedure, employing the Ugi multi-component reaction (MCR), followed by BOC deprotection and cyclization to diketopiperazine (DKP). Exploitation of Armstrong's convertible isonitrile in the Ugi reaction utilising an ‘internal nucleophile’ approach for diketopiperazine formation is presented
The universal Rink-isonitrile resin: applications in Ugi reactions
作者:Jack J Chen、Adam Golebiowski、Sean R Klopfenstein、Laura West
DOI:10.1016/s0040-4039(02)00700-1
日期:2002.5
The Rink-isonitrile resin provides a new universal platform for Ugi multi-component reactions. Applications were demonstrated by the traceless synthesis of diketopiperazines, benzodiazepines, and 5-substituted 1H-tetrazoles. (C) 2002 Published by Elsevier Science Ltd.