丙酮酸甲酯 、
2-(1-allyl-2-oxoindolin-3-ylidene)malononitrile 在
1-(((1R,4aS,10aR)-7-isopropyl-1,4a-dimethyl-1,2,3,4,4a,9,10,10a-octahydrophenanthren-1-yl)methyl)-3-((1R)-(6-methoxyquinolin-4-yl)(8-vinylquinuclidin-2-yl)-methyl)thiourea 作用下,
以
乙醚 为溶剂,
反应 0.5h,
以99%的产率得到(R)-methyl 1-allyl-2'-amino-3'-cyano-2-oxospiro[indoline-3,4'-pyran]-6'-carboxylate