O'Donnell S R, Wanstall J C
Br J Pharmacol. 1974 Nov;52(3):407-17. doi: 10.1111/j.1476-5381.1974.tb08610.x.
1 Amines related in structure to either isoprenaline (catechol series) or orciprenaline (resorcinol series) were examined for activity on isolated trachea (relaxation), atria (chronotropic action) and perfused hind-limb (vasodilatation) of the guinea-pig.2 Compounds with a resorcinol nucleus were less potent on all three preparations but more selective for trachea than were compounds with a catechol nucleus.3 In both catechol and resorcinol compounds potency on trachea was enhanced by and selectivity for trachea was favoured by substitution of a p-OH phenyl group in the N-iso propyl, or by replacement of the N-iso propyl with an N-t-butyl, with or without a p-OH phenyl group.4 Most of the compounds, particularly the resorcinols, had much lower potencies, relative to isoprenaline, on hind-limb than on trachea.5 Some of the problems associated with the quantitative measurement of selectivity and with sub-classification of beta-adrenoceptors are discussed.
研究了结构上与异丙肾上腺素(儿茶酚系列)或奥西那林(间苯二酚系列)相关的胺类对豚鼠离体气管(舒张作用)、心房(变时作用)和灌注后肢(血管舒张)的活性。
具有间苯二酚核的化合物在所有三种制剂上的效力较低,但对气管的选择性高于具有儿茶酚核的化合物。
在儿茶酚和间苯二酚化合物中,在N-异丙基中取代对羟基苯基,或用N-叔丁基取代N-异丙基(有无对羟基苯基),可增强对气管的效力并有利于对气管的选择性。
相对于异丙肾上腺素,大多数化合物,尤其是间苯二酚类化合物,在后肢上的效力远低于在气管上的效力。
讨论了与β-肾上腺素能受体选择性的定量测量和亚分类相关的一些问题。