N-Boc-N-methyl-L-leucyl-D-lactyl-N-methyl-L-leucyl-3-phenyl-D-lactic acid 、
(S)-2-{(R)-3-[(S)-2-(tert-Butoxycarbonyl-methyl-amino)-4-methyl-pentanoyloxy]-2-oxo-azepan-1-yl}-4-methyl-pentanoic acid (R)-1-carboxy-2-phenyl-ethyl ester 生成 (2S,5R,8S,11R,14S,17R,20S,23R)-5,17-dibenzyl-7,11,13,19-tetramethyl-2,8,14,20-tetrakis(2-methylpropyl)-4,10,16,22-tetraoxa-1,7,13,19-tetrazabicyclo[21.4.1]octacosane-3,6,9,12,15,18,21,28-octone