Tetrahedron

Microwave assisted synthesis of spiro-2, 5-diketopiperazines

F Jam, M Tullberg, K Luthman, M Grøtli

Index: Jam, Fariba; Tullberg, Marcus; Luthman, Kristina; Grotli, Morten Tetrahedron, 2007 , vol. 63, # 39 p. 9881 - 9889

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Citation Number: 26

Abstract

A general and efficient method for the synthesis of spiro-2, 5-diketopiperazines (spiro-DKPs) is described. Cyclization of Boc-protected dipeptides containing spiro-amino acids by microwave assisted heating in water furnished the corresponding spiro-DKPs. The spiro- amino acids were prepared by combining stereoselective alkylation reactions using the Schöllkopf methodology for amino acid construction with Grubbs ring-closing metathesis ( ...