对甲苯磺酸 、
Z-L-Leu-L-Lys(Boc)-L-Lys(Boc)-OPh 在
palladium on activated charcoal
氢气 作用下,
反应 1.33h,
以100%的产率得到(S)-2-[(S)-2-((S)-2-Amino-4-methyl-pentanoylamino)-6-tert-butoxycarbonylamino-hexanoylamino]-6-tert-butoxycarbonylamino-hexanoic acid phenyl ester; compound with toluene-4-sulfonic acid