LAZAR, JANOS;BERNATH, GABOR, J. HETEROCYCL. CHEM., 27,(1990) N, C. 1885-1892
作者:LAZAR, JANOS、BERNATH, GABOR
DOI:——
日期:——
LAZAR, JANOS;BERNATH, GABOR, MAGY. KEM. FOLYOIR, 96,(1990) N1-12, C. 543-551
作者:LAZAR, JANOS、BERNATH, GABOR
DOI:——
日期:——
Saturated heterocycles, Part 172. Synthesis of 2,6-disubstituted-5,6,7,8-tetrahydropyrido[4,3-<i>d</i>]pyrimidine derivatives
作者:János Lázár、Gábor Bernáth
DOI:10.1002/jhet.5570270708
日期:1990.11
The title compounds were synthesized via the addition of methyl acrylate to benzylamine or to α-aminopyridine, which gave the corresponding diesters, e.g. 12, followed by Dieckmann condensation of the latter to yield the keto-esters 13, which were condensed with amidines and guanidines, 3, 14. Removal of the benzyl group by hydrogenolysis and subsequent alkylation of the nitrogen atom at position 6