乙酸酐 、 3',4,4',7,8,9,10',11',12',15'-decahydro-2',2',5,5',7,7,7a',9',10,12',12',14'-dodecamethylbenzo<1,2-b:4,5-b'>dipyran-2(3H)-spiro-7'(2'H)-xantheno<6,7-b:9a,1-b'>dipyran-6'-one 在
sodium acetate 、
锌 作用下,
反应 2.0h,
以40 mg的产率得到Acetic acid 7-[2-(6-acetoxy-2,2,5,8-tetramethyl-chroman-7-yl)-ethyl]-2,2,5,8-tetramethyl-chroman-6-yl ester