tert-butyl (5R,8R,11S)-5-(4-chlorobenzyl)-11-((dimethylamino)methyl)-8-isopropyl-6,9,12-trioxo-2,3,5,6,7,8,9,10,11,12,13,14,15,16-tetradecahydro-4H-benzo[q][1]oxa[4,7,10,13]tetraazacyclooctadecine-4-carboxylate 在
盐酸 作用下,
以
1,4-二氧六环 为溶剂,
以98%的产率得到(6R,9R,12S)-6-[(4-chlorophenyl)methyl]-12-[(dimethylamino)methyl]-9-propan-2-yl-2-oxa-5,8,11,14-tetrazabicyclo[16.4.0]docosa-1(22),18,20-triene-7,10,13-trione