6 7-diacyloxy-tetrahydroisoquinoline compounds
Abstract
Abstract A PROCESS FOR PREPARING A COMPOUND HAVING THE FORMULA: 1-(R1-CH2-),6,7-DI(R-O-)-1,2,3,4-TETRAHYDROISOQUINOLINE WHEREIN R REPRESENTS A LOWER ALKANOYL RAFICAL AND R1 REPRESENTS A TRIMETHOXYPHENYL RADICAL, AND PHARAMACEUTICALLY ACCEPTABLE ACID ADDITION SALTS THEREOF, WHICH COMPRISES THE STEPS OF TREATING WITH AN ACLANTING AGENT A 6,7DIHYDROXY-TETRAHYDROISOQUINOLINE COMPOUND HAVING THE GENEREAL FORMULA: 1-(R1-CH2-),6,7-DI(HO-)-1,2,3,4-TETRAHYDROISOQUINOLINE WHEREIN R1 IS AS DESCRIBED ABOVE. THE IMINO RADICAL OF SAID TERTRAHYDROISQUINOLINE COMPOUND IS PROTECTED EITHER BY FORMATION OF AN ACID ADDITION SALT OR BY THE ADDITION OF A PROTECTIVE GROUP. WHEN THE IMINO RADICAL IS PROTECTED BY A PROTECTIVE GROUP, SAID GROUP ELIMINATED AFTER TREATING.
Inventors
- 👤 Toshio Watanabe
- 👤 Goro Tsukamoto
- 👤 Kimiaki Hayashi
- 👤 Masanori Sato
- 👤 Yoshio Iwasawa
Bibliographic Details
Claims Analysis
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