4-[2-(3,4,5-trimethoxyphenyl)-1,3-dithian-2-yl]-5-(trityloxymethyl)oxolan-2-one

(S)-(+)-γ-三苯甲基甲氧基-γ-丁内酯

(4S)-(+)-2-phenylseleno-4-trityloxymethyl-butan-4-olide

2-(3,4,5-trimethoxyphenyl)-1,3-dithiane

(2S)-2-(trityloxymethyl)-2H-furan-5-one