Synthesis of 2-amino-7,8-dihydro-6(5H)-quinazolinone, 2,4-diamino-7,8- dihydro-6(5H)-quinazolinone, 5,6,7,8-tetrahydro-2,6-quinazolinediamine and 5,6,7,8-tetrahydro-2,4,6-quinazolinetriamine derivatives

Article abstract of DOI:10.1002/jhet.5570370229

N-(2-Amino-5,6,7,8-tetrahydro-6-quinazolinyl)acetamide (9) and N-(2,4- diamino-5,6,7,8-tetrahydro-6-quinazolinyl)acetamide (6) were synthesized from N-(4-oxocyclohexyl)acetamide (5) as novel peptidomimetic building blocks. With similar purpose, N-(6-oxo-5,6,7,8-tetrahydro-2-quinazolinyl)acetamide (18) and N-[2-(acetylamino)-6-oxo-5,6,7,8-tetrahydro-4-quinazolinyl]acetamide (14) were prepared from cyclohexane-1,4-dione monoethylene ketal (11).