(rac-2β,6α)-tetrahydro-2-<2-<2-hydroxy-3,4,6-trimethyl-5-(phenylmethoxy)phenyl>ethyl>-2H-pyran-2-carbonitrile 、
4-溴苯甲酰氯 在
吡啶 作用下,
反应 16.0h,
以90%的产率得到(rac-2β,6α)-tetrahydro-2-<2-<2-<(4-bromobenzoyl)oxy>-3,4,6-trimethyl-5-(phenylmethoxy)phenyl>ethyl>-6-methyl-2H-pyran-2-carbonitrile