Aroyl esters of 2-N, N-dialkylamino-1-benzocycloalkanols (6, 7), which may be considered to be semi-rigid cyclic analogs of procaine, were prepared to study the influence of the stereochemical relationship between the aroyloxy and the amino group on local anesthetic activity. The cis-compounds (6a-1, 6c-1) were more active than the corresponding trans-isomers (6b-1, 6d-1). Similarly, the optical isomers of cis-2-N, N-dimethylamino-1-benzoyloxy-1, 2, 3, 4-tetrahydronaphthalene (6c-1) differed in their activity with the l-isomer being more active. The reaction of 2-bromo-1-tetralol (9) with dimethylamine was also discussed.
制备了 2-N,N-二烷基
氨基-1-苯并环烷醇的丙酰基酯(6,7),以研究丙酰氧基和
氨基之间的立体
化学关系对局部麻醉活性的影响。顺式化合物(6a-1、6c-1)的活性高于相应的反式异构体(6b-1、6d-1)。同样,顺式-2-N,N-二甲基
氨基-1-苯甲酰氧基-1,2,3,4-四氢
萘的光学异构体(6c-1)的活性也不同,其中 l-异构体的活性更高。此外,还讨论了 2-
溴-1-
四氢萘酚(9)与
二甲胺的反应。