[(1S,2S,3R,4S,7R,9S,10S,12R,15S)-4-acetyloxy-15-[(2R,3S)-2-[butyl-[2-(pyridin-2-yldisulfanyl)ethyl]carbamoyl]oxy-3-[(2-methylpropan-2-yl)oxycarbonylamino]-3-phenylpropanoyl]oxy-1-hydroxy-9,12-dimethoxy-10,14,17,17-tetramethyl-11-oxo-6-oxatetracyclo[11.3.1.03,10.04,7]heptadec-13-en-2-yl] benzoate 、
Lys-Boc octreotide 3-tritylmercaptopropionate 在
三异丙基硅烷 、
三氟乙酸 作用下,
以
四氢呋喃 、 aq. phosphate buffer 为溶剂,
反应 2.08h,
以69%的产率得到[(1S,2S,3R,4S,7R,9S,10S,12R,15S)-4-acetyloxy-15-[(2R,3S)-2-[2-[[3-[[(2R)-1-[[(4R,7S,10S,13R,16S,19R)-10-(4-aminobutyl)-16-benzyl-4-[[(2R,3R)-1,3-dihydroxybutan-2-yl]carbamoyl]-7-[(1R)-1-hydroxyethyl]-13-(1H-indol-3-ylmethyl)-6,9,12,15,18-pentaoxo-1,2-dithia-5,8,11,14,17-pentazacycloicos-19-yl]amino]-1-oxo-3-phenylpropan-2-yl]amino]-3-oxopropyl]disulfanyl]ethyl-butylcarbamoyl]oxy-3-[(2-methylpropan-2-yl)oxycarbonylamino]-3-phenylpropanoyl]oxy-1-hydroxy-9,12-dimethoxy-10,14,17,17-tetramethyl-11-oxo-6-oxatetracyclo[11.3.1.03,10.04,7]heptadec-13-en-2-yl] benzoate