Synthesis in the diazasteroid group. XIV. Synthesis of the 13,15-diazasteroid system.
作者:KATSUHIDE MATOBA、TOSHIO IMAI、YOSHIE NISHINO、HIROKI TAKAHATA、YOSHIRO HIRAI、TAKAO YAMAZAKI
DOI:10.1248/cpb.28.1810
日期:——
A 13, 15-diazasteroid system was synthesized from 2-(6-methoxynaphthyl) ethyl tosylate (steroidal segment of the A, B rings) and ethylene urea (steroidal segment of the D ring) in 24.3% overall yield. The tosylate formed a 1 : 1 adduct with ethylene urea in 44% yield, using 2 molar equivalents of ethylene urea in the presence of sodium hydride in benzene. The adduct was cyclized to 13, 15-diazasteroid hydrochloride in 69.7% yield by prolonged heating in the presence of phosphorus pentoxide in phosphorus oxychloride. The hydrochloride was neutralized to provide the 13, 15-diazasteroid in 79.1% yield by treatment with potassium hydroxide solution. The biological activity of the hydrochloride of the 13, 15-diazasteroid is now being examined.
从2-(6-甲氧基萘基)乙基甲苯磺酸酯(A、B环的甾体部分)和乙烯脲(D环的甾体部分)合成了一个13,15-二氮杂甾体系统,总产率为24.3%。在苯中加入氢化钠的情况下使用两当量的乙烯脲,甲苯磺酸酯与乙烯脲以1:1的比例形成加成物,产率为44%。在磷酰氯中加入五氧化二磷的条件下,通过延长加热,加成物环化为13,15-二氮杂甾体盐酸盐,产率为69.7%。通过用氢氧化钾处理,盐酸盐中性的13,15-二氮杂甾体产率为79.1%。现在正在研究13,15-二氮杂甾体盐酸盐的生物活性。