The invention relates to novel heterocyclic compounds of the formula
in free base form or in acid addition salt form, in which R
1
, R
2
, R
3
, R
4
and A are as defined in the specification, to their preparation, to their use as medicaments and to medicaments comprising them.
SYNTHETIC UTILIZATION OF METHY, 35,(1987) N 2, 275-285
作者:SYNTHETIC UTILIZATION OF METHY
DOI:——
日期:——
Synthetic utilization of methyl 2-(F-methyl)-2-hydryl-F-propyl ether. Part III [1]. A simple one-pot preparation and derivatization of 2-alkylthio-5-(F-methyl)-6-fluoro-3,4-dihydro-4(3H)-pyrimidinones
The title compounds were readily synthesized in one pot by the reaction of methyltriethylammonium 2-(-methyl)--propenolate, formed directly by the reaction of methyl 2-(-methyl)-2-hydryl--propyl ether with two equivalents of triethylamine in DMF, and S-alkylisothiourea hydrogen halide, followed by the reaction with triethylamine again. Derivatizations via nucleophilic substitution of the fluorine atom