The Synthesis of Sterically Demanding Amino Acid-Derived Cyclic Phosphonamides
作者:Kevin T. Sprott、Paul R. Hanson
DOI:10.1021/jo005545q
日期:2000.11.1
4-diamines in the synthesis of amino acid-derived cyclic phosphonamides 1-3 are described. The 1,4-diamines are synthesized via three methods: (i) amino acid/fumaryl chloride coupling followed by amide reduction, (ii) amino acid/1,4-diamine coupling followed by amide reduction, and (iii) a template-supported ring-closing metathesis/hydrolysis sequence. The pseudo C(2)-symmetric cyclic phosphonamides 1-3 are