Synthesis of Boronic Acid Analogues of α-Amino Acids by Introducing Side Chains as Electrophiles
作者:Sharada Jagannathan、Timothy P. Forsyth、Charles A. Kettner
DOI:10.1021/jo015753y
日期:2001.9.1
the side chain carboxylate protected as a tert-butyl or a methyl ester, respectively. Following acylation of the amino group, the side chain tert-butyl ester of boroaspartic acid was removed by treatment with TFA. Boroglutamic acid was obtained as the free boronic acid by hydrolysis with HCl. Prior syntheses of alpha-aminoboronic acids involve the initial addition of an organometallic reagent to a