6,7-dideoxy-1,2:3,4-di-O-isopropylidene-D-galacto-hept-6-enopyranose 、
O-ethyl S-2-(4-methoxyphenyl)-2-oxoethyl carbonodithioate 在
过氧化双月桂酰 作用下,
以
1,2-二氯乙烷 为溶剂,
以64%的产率得到Dithiocarbonic acid O-ethyl ester S-[4-(4-methoxy-phenyl)-4-oxo-1-((3aR,5S,5aR,8aS,8bR)-2,2,7,7-tetramethyl-tetrahydro-bis[1,3]dioxolo[4,5-b;4',5'-d]pyran-5-yl)-butyl] ester