M. Yamato, Y. Takeuchi
Mar 25, 1982
Citations
0
Influential Citations
11
Citations
Journal
Chemical & Pharmaceutical Bulletin
Abstract
The reaction of 2-(methylamino) benzamide with levulinic acid gave 3a, 4-dimethyl-2, 3, 3a, 4-tetrahydropyrrolo [2, 1-b] quinazoline-1, 9-dione (2). 3a-Methyl-2, 3, 3a, 4-tetrahydropyrrolo [2, 1-b] quinazoline-1, 9-dione (6) was prepared by the method shown in Chart 3. The compounds 2 and 6 were different from authentic samples A and B prepared by the method reported by previous workers. The real structures of A and B were found to be 3a-methyl-2, 3, 3a, 4-tetrahydropyrrolo [1, 2-a] quinazoline-1, 5-dione (9) and 3-(2, 3-dimethyl-4-oxo-1, 2, 3, 4-tetrahydro-2-quinazolinyl) propionic acid (10), respectively.