Synthesis of 2,3-dihydro-1,4-benzodioxin derivatives. II. 5(or 6)-Acyl 2,3-dihydro-1,4-benzodioxin derivatives: New phenoxyacetic acid diuretics.
作者:HIROSHI ITAZAKI、KUNIO HAYASHI、MUNENORI MATSUURA、YUKIO YONETANI、MASUHISA NAKAMURA
DOI:10.1248/cpb.36.3404
日期:——
5(and 6)-Acyl-7, 8-dichloro-2, 3-dihydro-1, 4-benzodioxin-2-carboxylic acids (VI) and related compounds were synthesized and tested for diuretic and antihypertensive properties. These compounds (VI) were prepared by the reaction of 3, 4-dichloro-1, 2-dihydroxybenzene (2) with epibromohydrin (EBH) in the presence of a base and the Friedel-Crafts acylation, or by acylation of 2 and reaction with EBH, followed by oxidation. Acylation of 7, 8-dichlorodihydrobenzodioxin-2-ylmethanol (15a) gave the corresponding 5- and 6-acyl compounds, (17 and 10). Diuretic activity was generally observed when a 5-acyl substituent was present in the molecule. Compound 20e showed strong diuretic and antihypertensive activities, like indacrinone (II).
5(和6)-酰基-7, 8-二氯-2, 3-二氢-1, 4-苯并二噁烯-2-羧酸(VI)及相关化合物被合成并测试了其利尿和抗高血压特性。这些化合物(VI)是通过3, 4-二氯-1, 2-二羟基苯(2)与溴代环氧乙烷(EBH)在碱的存在下反应,并进行Friedel-Crafts酰化,或者通过对2进行酰化后与EBH反应,随后氧化而制备的。对7, 8-二氯二氢苯并二噁烯-2-基甲醇(15a)进行酰化得到相应的5-和6-酰基化合物(17和10)。当分子中存在5-酰基取代基时,通常观察到利尿活性。化合物20e表现出强的利尿和抗高血压活性,类似于吲达克仑(II)。