ethyl (2E,5S,7R,8S)-8-methyl-7-benzyloxy-5-[2-(benzyloxy)ethyl]-9-[(2'-benzothiazolyl)sulfonyl]-2-nonenoate 在
potassium trimethylsilonate 、
三苯基膦 、
lithium hexamethyldisilazane 作用下,
生成 propan-2-yl N-[(2E,5S,7R,8R,9E,11E,13S,15R,16S,17R,18E,20E,22E)-15-hydroxy-17-methoxy-8,12,16,18,22-pentamethyl-23-(2-methyl-1,3-oxazol-4-yl)-7,13-bis(phenylmethoxy)-5-(2-phenylmethoxyethyl)tricosa-2,9,11,18,20,22-hexaenoyl]-N-(propan-2-yloxycarbonylamino)carbamate