7-溴庚酸乙酯 、
Methyl-7-iod-3,3-dimethyl-heptanoat 、 、 methyl 7-{N-[4-(2-tetrahydropyranyloxy)nonyl]-acetamido}-3,3-dimethylheptanoate 以The subsequent step yields 7- [N-(4-hydroxynonyl)acetamido]-3,3-dimethylheptanoic acid (B)的产率得到ethyl 7-[N-(4-acetoxynonyl)-acrylamido]heptanoate