(-)-2,3-O-cyclohexylidene-1,4-di-O-methoxymethyl-5-O-(2',3',4'-tri-O-acetyl-β-D-xylopyranosyl)-myo-inositol 、 1'-acetyl-6-(acetyloxy)-6'-bromo-1',2',8,8a,9,10-hexahydro-6-methyl-2'-oxo-2,4-bis(phenylmethoxy)spiro
pyrimido<4,5-b><1,4>diazepine-7(6H),3'-<3H>indole>-8-carboxylic acid 在
2,4,6-三硝基氯苯 作用下,
以
吡啶 为溶剂,
反应 2.0h,
生成