Benzoesaeure-<4-<(1'R)-2',2',4-trimethyl-3'-(3''-oxo-1''-butenyl)-3'-cyclohexenyl>-2-methyl-3-butenyl>ester 在
potassium carbonate 作用下,
以
甲醇 为溶剂,
反应 2.5h,
以82%的产率得到4-<(5'R)-5'-(4''-hydroxy-3''-methyl-2''-butenyl)-2',6',6'-trimethyl-1'-cyclohexenyl>-3-buten-2-onE