[3-[2-[(1S,9R,16S,19S)-6-bromo-17-oxo-19-propan-2-yl-16-(2-trimethylsilylethoxycarbonylamino)-10,26-dioxa-8,18,21-triazahexacyclo[12.9.2.120,23.01,9.02,7.011,24]hexacosa-2(7),3,5,11(24),12,14(25),20,22-octaen-22-yl]-1,3-oxazol-5-yl]-1H-indol-7-yl] acetate 在
lithium hydroxide 作用下,
以
乙腈 为溶剂,
反应 3.0h,
以72%的产率得到2-trimethylsilylethyl N-[(10S,13S,20S,21R)-32-hydroxy-12-oxo-10-propan-2-yl-8,37,40-trioxa-4,11,22,34,39-pentazadecacyclo[27.6.1.12,5.16,9.115,19.118,21.07,20.020,24.023,28.033,36]tetraconta-1(35),2,4,6,9(39),15(38),16,18,23(28),24,26,29(36),30,32-tetradecaen-13-yl]carbamate