The invention provides 3-allyl-7,8-dihydroxy-6-halo-1-(4-hydroxyphenyl)-2,3,4,5-tetrahydro-1H-3-benzazepine derivatives, 0-alkanoyl esters thereof and pharmaceutically acceptable acid addition salts of these compounds. These compounds have a unique cardiovascular effect in that they are potent renal vasodilators and also induce bradycardia. The invention therefore includes pharmaceutical compositions containing such compounds. The compounds of the invention can be prepared by reacting an appropriate ether of the desired compound in which all three hydroxy groups are etherified, with an ether cleaving agent, with optional subsequent O-acylation and/or salt formation.
                            本发明提供了3-烯丙基-7,8-二羟基-6-卤-1-(
4-羟基苯基)-2,3,4,5-四氢-1H-3-苯并氮杂卓衍
生物、其0-烷酰基酯和这些化合物的药学上可接受的酸加成盐。这些化合物具有独特的心血管效应,因为它们是强效的肾血管扩张剂,还能诱发心动过缓。因此,本发明包括含有此类化合物的药物组合物。本发明化合物的制备方法是将所需化合物的适当醚与醚裂解剂反应,其中的三个羟基均被醚化,随后任选进行 O-酰化和/或成盐。