(3S,3'S)-3-[4-(tert-butyloxy)benzyl]spiro[(dihydropyrazine-2,5-dione)-6,3'-(2',3'-dihydrothieno[2,3-b]naphtho-4',9'-dione)] 在
三氟乙酸 作用下,
以
二氯甲烷 为溶剂,
以91%的产率得到(3S,6'S)-6'-[(4-hydroxyphenyl)methyl]spiro[2H-benzo[f][1]benzothiole-3,3'-piperazine]-2',4,5',9-tetrone