、
N-{2-[2-(2-{2-[2-(2-hydroxy-ethoxy)-ethoxy]-ethoxy}-ethoxy)-ethoxy]-ethyl}-succinamic acid 17-(1,5-dimethyl-hexyl)-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-yl ester 在
六甲基二硅氮烷 、
4-二甲氨基吡啶 、
1-(3-二甲基氨基丙基)-3-乙基碳二亚胺 作用下,
以
二氯甲烷 为溶剂,
反应 15.0h,
以43%的产率得到[(3S,8S,9S,10R,13R,14S,17R)-10,13-dimethyl-17-[(2R)-6-methylheptan-2-yl]-2,3,4,7,8,9,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3-yl] 4-[2-[2-[2-[2-[2-[2-[2-[(4-methyl-6-oxo-1H-pyrimidin-2-yl)carbamoylamino]acetyl]oxyethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethylamino]-4-oxobutanoate