(Z,Z)-9,12-十八烷二烯酸二聚物 、 ((6aR,7R,11aR,11bS)-7-hydroxy-4,4,11b-trimethyl-2,3,4,4a,5,6,6a,7,8,11,11a,11b-dodecahydro-1H-cyclohepta[a]naphthalene-6a,9-diyl)dimethanol 在
4-二甲氨基吡啶 、
N,N'-二环己基碳二亚胺 作用下,
以
二氯甲烷 为溶剂,
以40%的产率得到(9Z,12Z)-(7-hydroxy-6a-(hydroxymethyl)-4,4,11b-trimethyl-2,3,4,4a,5,6,6a,7,8,11,11a,11b-dodecahydro-1H-cyclohepta[a]naphthalene-9-yl)methyl octadeca-9,12,dienoate