Karl Gademann
The natural beta-amino acid deriv. Boc-Asp-OBn (Boc = Me3CO2C; Bn = CH2Ph), as well as I (R = CH2CH2CO2Bn, CH2OBn; TCE = CH2CCl3) (prepd. from appropriately protected glutamic acid and serine, resp., by Arndt-Eistert homologation), were employed as buildin ...
1998