camphanoylchlorid 、 DL-(1α,2β,3β,4α,6β)-2-O,3-N-carbonyl-6-iodo-4-O-methyl-3-(methylamino)-1,2,4-cyclohexanetriol 在
2,6-bis(diethylamino)pyridine 作用下,
生成 (-)-(1'S)-(1α,2β,3β,4α,6β)-2-O,3-N-carbonyl-1-O-(-)-camphanoyl-6-iodo-4-O-methyl-3-(methylamino)-1,2,4-cyclohexanetriol 、 (+)-(1'R)-(1α,2β,3β,4α,6β)-2-O,3-N-carbonyl-1-O-(-)-camphanoyl-6-iodo-4-O-methyl-3-(methylamino)-1,2,4-cyclohexanetriol