rifamycin P 、
N-哌嗪甲酸乙酯 以
四氢呋喃 为溶剂,
反应 15.0h,
以34.5%的产率得到ethyl 4-[(9E,19E,21Z)-13-acetyloxy-2,15,17,32-tetrahydroxy-11-methoxy-3,7,12,14,16,18,22-heptamethyl-6,23-dioxo-8,33-dioxa-27-thia-24,29-diazapentacyclo[23.6.1.14,7.05,31.026,30]tritriaconta-1(31),2,4,9,19,21,25(32),26(30),28-nonaen-28-yl]piperazine-1-carboxylate