乙酸酐 、 (5R,6S,9S,10R)-9-[1,3]Dithian-2-yl-8-nitro-1,3-dioxa-spiro[4.5]dec-7-ene-6,10-diol 在
对甲苯磺酸 作用下,
以60 mg的产率得到1D-(2,3',4/1,3)-2,4-di-O-acetyl-3-hydroxymethyl-3,3'-O-methylene-6-nitro-2,3,4-trihydroxycyclohex-5-enecarbaldehyde trimethylene dithioacetal