Benzoic acid (1Z,7E,11E)-(3R,4R)-3-hydroxy-4-isopropenyl-7,11-dimethyl-cyclotetradeca-1,7,11-trienylmethyl ester 在
四溴环己二烯-1-酮 作用下,
以55%的产率得到Benzoic acid (2E,6E)-(1S,10R,14R)-10-bromo-14-isopropenyl-7,11-dimethyl-15-oxa-bicyclo[9.3.1]pentadeca-2,6-dien-3-ylmethyl ester