5-(4'-β-D-Allopyranosyloxyphenyl)-3-aryl-4,5-dihydropyrazole-1-carbothioamides (2a–2h) were synthesized by the reaction of (1a–1h) with thiosemicarbazide and KOH in ethanol. The structures of all new compounds were characterized by 1HNMR, IR, and MS (HR-MS) spectra. A preliminary bioassay test of 1f–1h and 2a–2h suggested that most of these helicid analogues showed mild to strong activity. Compounds 1g, 2a, 2c, and 2f at a dose of 200 mg·kg–1 were better than that of the parent helicid.
5-(4'-β-D-Allopyranosyloxyphenyl)-3-aryl-4,5-dihydropyrazole-1-carbothioamides (2a-2h) 由 (1a-1h) 与
硫代
氨基
脲和 KOH 在
乙醇中反应合成。所有新化合物的结构均通过 1HNMR、IR 和 MS(HR-MS)光谱进行了表征。对 1f-1h 和 2a-2h 进行的初步
生物测定表明,这些螺旋类似物大多具有轻微至较强的活性。剂量为 200 mg-kg-1 的 1g、2a、2c 和 2f 化合物的活性优于母螺旋体。