6,7-dihydroxyindoline-1-carboxylate 、
methyl (1S)-1-(3-methoxy-3-oxopropyl)-8-phenylmethoxy-1,3,4,9-tetrahydropyrido[3,4-b]indole-2-carboxylate 在
[双(三氟乙酰氧基)碘]苯 作用下,
以
乙腈 为溶剂,
反应 36.0h,
以10%的产率得到22-O-benzyl 7-O-methyl (1R,12R,23S)-15-acetyloxy-9-hydroxy-23-(3-methoxy-3-oxopropyl)-11-oxa-7,13,22-triazahexacyclo[10.7.4.01,12.02,10.04,8.014,19]tricosa-2(10),3,8,14(19),15,17-hexaene-7,22-dicarboxylate