2-(3-(1,4-dioxaspiro[4.5]decan-2-yl)propylsulfonyl)benzo[d]thiazole 、
2-deoxy-3,4,6-tri-O-benzyl-D-glucono-1,5-lactone 在
lithium hexamethyldisilazane 、
1,8-二氮杂双环[5.4.0]十一碳-7-烯 作用下,
以
四氢呋喃 为溶剂,
生成
(S)-2-(3-((4R,5S,6R)-4,5-bis(benzyloxy)-6-(benzyloxymethyl)tetrahydro-2H-pyran-2-ylidene)propyl)-1,4-dioxaspiro[4.5]decane 、 (S)-2-(3-((4R,5S,6R)-4,5-bis(benzyloxy)-6-(benzyloxymethyl)tetrahydro-2H-pyran-2-ylidene)propyl)-1,4-dioxaspiro[4.5]decane