Synthesis 2012; 44(19): 3063-3070
DOI: 10.1055/s-0032-1316986
paper
© Georg Thieme Verlag Stuttgart · New York

An Approach for Simultaneous Synthesis of cis- and trans-3-Substituted Proline-Glutamic Acid Chimeras

Jyotirmoy Maity
a   Institut für Chemie und Biochemie-Organische Chemie, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
,
Pinaki Saha
a   Institut für Chemie und Biochemie-Organische Chemie, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
,
Ulla I. M. Gerling
a   Institut für Chemie und Biochemie-Organische Chemie, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
,
Dieter Lentz
b   Institut für Chemie und Biochemie-Anorganische Chemie, Freie Universität Berlin, Fabeckstr. 34/36, 14195 Berlin, Germany, Fax: +49(30)83855644   Email: koksch@chemie.fu-berlin.de
,
Beate Koksch*
a   Institut für Chemie und Biochemie-Organische Chemie, Freie Universität Berlin, Takustr. 3, 14195 Berlin, Germany
› Author Affiliations
Further Information

Publication History

Received: 05 July 2012

Accepted after revision: 07 July 2012

Publication Date:
13 August 2012 (online)


Abstract

Synthesis of cis- and trans-3-substituted proline-glutamic acid chimeras with suitable protection for peptide synthesis through Fmoc-strategy was accomplished in six steps from benzyl (2S)-4-oxo-1-(9-phenyl-9H-fluoren-9-yl)pyrrolidine-2-carboxylate, which had been synthesized from trans-4-hydroxyproline in three steps. This methodology involved generation of cis- and trans-3-alkylated proline moieties, and manipulation of functionality and protecting groups to obtain proline-chimera monomers in appropriate form for peptide synthesis.

Supporting Information