benzyl ((3S,5'S,8'S)-4'-(5-(1H-indol-3-yl)oxazol-2-yl)-7-bromo-6'-((tert-butoxycarbonyl)oxy)-8'-isopropyl-2,6'-dioxospiro[indoline-3,2'-7-aza-1(5,2)-oxazola-3(1,3)-benzenacyclooctaphan]-5'-yl)carbamate 在
lithium acetate 、
环氧氯丙烷 作用下,
以
乙腈 为溶剂,
反应 0.25h,
以33%的产率得到tert-butyl [(10S,13S,20S)-12,21-dioxo-13-(phenylmethoxycarbonylamino)-10-propan-2-yl-8,39-dioxa-4,11,22,34,38-pentazanonacyclo[27.6.1.12,5.16,9.115,19.07,20.020,24.023,28.033,36]nonatriaconta-1(35),2,4,6,9(38),15(37),16,18,23(28),24,26,29(36),30,32-tetradecaen-18-yl] carbonate