3-(3,5-二叔丁基-4-羟基苯基)丙酸甲酯 、
螺二醇 、
sodium methylate 在
3-(3,5- di-t-butyl-4-hydroxyphenyl)-N-octadecylpropionamide 作用下,
以to obtain 21 g of white crystalline 3,9-bis{2-[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyloxy]-1,1-dimethylethyl}-2,4,8,10-tetraoxaspiro[5.5]-undecane having a purity of 99% (compound AO-1)的产率得到3,9-Bis[2-{3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyloxy}-1,1-dimethylethyl]-2,4,8,10-tetraoxaspiro[5.5]undecane