Boc-Tyr(Bzl)-Gly-Gly-Phe-Leu-OH 、
[(3R,4S,5R,6R)-3,4,5-tris(phenylmethoxy)-6-(phenylmethoxymethyl)oxan-2-yl] N,N'-bis(4-methylphenyl)carbamimidate 反应 0.5h,
生成 (S)-2-[(S)-2-(2-{2-[(S)-3-(4-Benzyloxy-phenyl)-2-tert-butoxycarbonylamino-propionylamino]-acetylamino}-acetylamino)-3-phenyl-propionylamino]-4-methyl-pentanoic acid (2S,3R,4S,5R,6R)-3,4,5-tris-benzyloxy-6-benzyloxymethyl-tetrahydro-pyran-2-yl ester 、 (S)-2-[(S)-2-(2-{2-[(S)-3-(4-Benzyloxy-phenyl)-2-tert-butoxycarbonylamino-propionylamino]-acetylamino}-acetylamino)-3-phenyl-propionylamino]-4-methyl-pentanoic acid (2R,3R,4S,5R,6R)-3,4,5-tris-benzyloxy-6-benzyloxymethyl-tetrahydro-pyran-2-yl ester