反应详情

The synthesis of this compound is carried out as described in Example 1 except that, in Step A, the 1-chloro-4-acetoxynonane is replaced by an equimolar amount of 1-bromo-4(R)-acetoxy-2-nonyne (Example J). The product of Step A is thus ethyl 7-[N-(4(R)-acetoxy-2-nonynyl)cyanamido]-heptanoate. The subsequent steps yield 7-[N-(4-(R)-hydroxy-2-nonynyl)cyanamido]heptanoic acid (B), and 7-[1-(4(R)-hydroxy-2-nonynyl)ureido]heptanoic acid (C). The product of Step C is hydrogenated over a platinum on charcoal catalyst to afford 7-[1-(4(R)-hydroxynonyl)ureido]heptanoic acid.

1. customThe synthesis of this compound