柔红酮 、
(-)-(2R,3S,4R)-2-phenyl-3,4-bis<(trimethylsilyl)oxy>-2,3-dihydro-4H-pyran 在
4 A molecular sieve 、 di-syn-collidinyliodonium perchlorate 作用下,
以
二氯甲烷 为溶剂,
反应 1.0h,
生成 (2'R,3'R,4'R,5'R,6'S)-7-O-<2'-<3'-iodo-6'-phenyl-4',5'-bis<(trimethylsilyl)oxy>tetrahydropyranosyl>>daunomycinone 、 (2'R,3'R,4'R,5'R,6'S)-7-O-<2'-<3'-iodo-6'-phenyl-4',5'-bis<(trimethylsilyl)oxy>tetrahydropyranosyl>>daunomycinone 、
(2'S,3'S,4'S,5'S,6'R)-7-O-<2'-<3'-iodo-6'-phenyl-4',5'-bis<(trimethylsilyl)oxy>tetrahydropyranosyl>>daunomycinone