Compounds of the formula ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 are the same or different and are hydrogen, C.sub.1 to C.sub.6 alkyl, C.sub.6 to C.sub.12 carbocyclic aryl or aralkyl of 1 to 6 carbon atoms in the alkyl moiety and 6 to 12 carbon atoms in the carbocyclic aryl moiety; R.sup.4 and R.sup.5 are the same or different and are hydrogen or C.sub.1 to C.sub.6 alkyl; and R.sup.6 and R.sup.7 are the same or different and are hydrogen, C.sub.1 to C.sub.6 alkyl or C.sub.1 to C.sub.6 alkoxy. Methods for preparing these compounds are also disclosed. The compounds are useful as antihypertensives and as diuretics. They also function as antihistamines and as bronchodilating agents and are therefore effective in inhibiting the effects of allergic reactions. They are also of use in the treatment of migraine and in the treatment of vasospastic disorders.
该文段描述了一种化合物的公式为##STR1##其中R.sup.1,R.sup.2和R.sup.3是相同或不同的氢,C.sub.1到C.sub.6烷基,C.sub.6到C.sub.12的碳环芳基或1到6碳原子的烷基基团和6到12碳原子的碳环芳基基团; R.sup.4和R.sup.5是相同或不同的氢或C.sub.1到C.sub.6烷基; R.sup.6和R.sup.7是相同或不同的氢,C.sub.1到C.sub.6烷基或C.sub.1到C.sub.6烷氧基。还公开了制备这些化合物的方法。这些化合物可用作降压药和利尿剂。它们也具有抗
组胺和支气管扩张剂的作用,因此对抑制过敏反应的影响有效。它们还可用于治疗偏头痛和血管痉挛性疾病的治疗。