ethyl 2-(2-(2-(2-(2,3-bis((tert-butoxy)carbonylamino)propanoylamino)ethoxy)ethoxy)ethyl)(((ethoxycarbonyl)methyl)amino)acetic acid 在
(benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate 、
三乙胺 作用下,
以
乙腈 为溶剂,
反应 26.5h,
生成 [(2-{2-[2-(2,3-Bis-pentacosa-10,12-diynoylamino-propionylamino)-ethoxy]-ethoxy}-ethyl)-ethoxycarbonylmethyl-amino]-acetic acid ethyl ester