| 摘要 |
<p>Title cpds. of formula (I) (where R' is 1-4C alkyl and R2 is H or 1-4C alkyl) and their salts with mineral and organic acids, are prepared by reacting a 2-methyl-2-thiopseudourea salt with ClCOOR' and reacting the product with an R2-2,3-diaminopyridine. (R1, R2 are lower alkyl).</p> |
