The synthesis of two pairs of the title diastereomers, which represent conformationally constrained analogues of the phenylcarbamate local anesthetics, is described. The synthesis was accomplished by starting from cycloheptanone and 2-alkoxyanilines and the intermediate diastereomers of 2-aminomethylcycloalkanols (VI, VII) were separated as their 4-nitrobenzoyl derivatives (IV, V) by extraction and fractional crystallization. The prepared compounds (VIIIa, VIIIb, IXa, and IXb) are assumed to be of help in interpreting the structure activity relationships within this class of drugs.
描述了两对标题异构体的合成,它们代表苯基氨基甲酸酯局部麻醉药的构象受限类似物。从环庚酮和2-烷氧基苯胺出发合成,通过提取和分级结晶将中间体2-氨基甲基环庚醇的异构体(VI、VII)分离为它们的4-硝基苯甲酰衍生物(IV、V)。准备的化合物(VIIIa、VIIIb、IXa和IXb)被认为有助于解释这一类药物中的结构活性关系。