An Unexpected Formation of a 14-Membered Cyclodepsipeptide
作者:Boyan Iliev、Anthony Linden、Heinz Heimgartner
DOI:10.1002/hlca.200390262
日期:2003.9
The treatment of diluted solutions of the hydroxy diamides 6a and 6b in toluene with HCl gas at 100° gave the dimeric, 14-memberedcyclodepsipeptide 10 in up to 72% yield (Scheme 3). The same product was formed from the linear dimer of 6b, the depsipeptide 11, under the same conditions (cf. Scheme 4). All attempts to prepare the cyclic seven-membered monomer 9, starting with different precursors and