This invention provides certain novel substituted tetrahydroisoquinoline opticulisomers of the formula: ##STR1## wherein A represents the formula ##STR2## wherein R is hydrogen or halogen; R.sup.1 is hydrogen, lower alkyl, hydroxyl, halogen, amino, or lower acylamino; R.sup.2 is hydrogen, lower alkyl, hydroxyl, amino, or lower alkylsulfonylamino; R.sup.3 is hydrogen, lower alkyl, or hydroxyl; R.sup.4 is a hydrogen atom or a lower alkylsulfonyl; with the proviso that when R.sup.1 is hydroxyl, R.sup.2 and R.sup.3 are all not hydrogen, or salts thereof.
                            本发明提供了某些新型取代
四氢异喹啉光学异构体,其
化学式为:##STR1## 其中A代表公式##STR2## 其中R为氢原子或卤素;R.sup.1为氢原子、低碳基、羟基、卤素、
氨基或低酰胺基;R.sup.2为氢原子、低碳基、羟基、
氨基或低烷基磺酰胺基;R.sup.3为氢原子、低碳基或羟基;R.sup.4为氢原子或低烷基磺酰基;但是当R.sup.1为羟基时,R.sup.2和R.sup.3都不是氢原子,或其盐。