1-[11,23-Dihydroxy-17-[(4-methylphenyl)carbamoylamino]-25,26,27,28-tetrapentoxy-5-pentacyclo[19.3.1.13,7.19,13.115,19]octacosa-1(24),3,5,7(28),9,11,13(27),15(26),16,18,21(25),22-dodecaenyl]-3-(4-methylphenyl)urea 、
对甲苯异氰酸酯 在
potassium carbonate 作用下,
以
丙酮 为溶剂,
以60%的产率得到[11,23-bis[(4-methylphenyl)carbamoylamino]-17-[(4-methylphenyl)carbamoyloxy]-25,26,27,28-tetrapentoxy-5-pentacyclo[19.3.1.13,7.19,13.115,19]octacosa-1(24),3,5,7(28),9,11,13(27),15(26),16,18,21(25),22-dodecaenyl] N-(4-methylphenyl)carbamate