Acetic acid 6-methyl-2-[3-(2-methyl-8-oxa-tricyclo[4.2.1.03,7]non-6(9)-en-2-yl)-prop-(Z)-ylidene]-hept-5-enyl ester 在
preparative TLC (silica gel-G) 作用下,
以
乙酸乙酯 、 Petroleum ether 为溶剂,
以18 mg的产率得到Acetic acid 6-methyl-2-[3-(2-methyl-8-oxo-bicyclo[3.2.1]oct-3-en-2-yl)-prop-(Z)-ylidene]-hept-5-enyl ester