化学療法剤の研究 (第4報)

イソニコチン酸チオセミカルバチッドの閉環反応について

抄録

By heating 1-isonicotinylthiosemicarbazide (I) in tetralin or alkoxide, 3-γ-pyridyl-Δ²-1, 2, 4-thiazoline-5-thione (II) was obtained, while the treatment of (I) with conc. sulfuric acid yielded 2-amino-5-γ-pyridyl-Δ²-1, 3, 4-thiadiazole (III). 5-Methylthio-3-γ-pyridyl-4 H-1, 2, 4-triazole (V) was obtained by heating or treatment with alkali phosphate of isonicotinyl-S-methylisothiosemicarbazide (IV) and oxidation of (V) with potassium permanganate yielded the 5-methylsulfonyl compound (VI).