Convenient Access to Glutamic Acid Side Chain Homologues Compatible with Solid Phase Peptide Synthesis
摘要:
Preparation of several side chain length variants of glutamic acid is achieved via olefin cross metathesis of allyl glycine derivatives. The products are suitably protected for direct use in Fmoc solid-phase peptide synthesis, as demonstrated by successful synthesis of test sequences.
Greatly Simplified Procedures for the Synthesis of α-Amino Acids by the Direct Alkylation of Pseudoephedrine Glycinamide Hydrate
作者:Andrew G. Myers、Patrick Schnider、Soojin Kwon、Daniel W. Kung
DOI:10.1021/jo990341z
日期:1999.4.1
A modified procedure for the synthesis of highly enantiomerically enriched alpha-amino acids is described that involves the direct alkylation of pseudoephedrine glycinamide hydrate (1.H(2)O) followed by hydrolysis. The modified procedure was developed to overcome several inconvenient aspects of our earlier reported procedure. Advantages of the new method include (1) a greatly simplified one-step synthesis