Thiocarbonic acid O-[(2S,3R,4R,5R,6S)-2-((R)-2,2-dimethoxy-1-methyl-ethyl)-6-methoxy-3,5-dimethyl-tetrahydro-pyran-4-yl] ester O-phenyl ester 在
偶氮二异丁腈 、
三正丁基氢锡 作用下,
以
甲苯 为溶剂,
反应 6.0h,
以12 mg的产率得到3(R),5(S)-dimethyl-2(S)-methoxy-6(S)-(1(R)-methyl-2,2-dimethoxyethyl)tetrahydro-2H-pyran