Synthesis and biological evaluation of 14-alkoxymorphinans. 1. Highly potent opioid agonists in the series of (-)-14-methoxy-N-methylmorphinan-6-ones
作者:Helmut Schmidhammer、Lislott Aeppli、Louise Atwell、Florian Fritsch、Arthur E. Jacobson、Michaela Nebuchla、Guenther Sperk
DOI:10.1021/jm00378a009
日期:1984.12
A series of eight (-)-14-methoxymorphinan-6-ones was synthesized and biologically evaluated. The morphinanones 3-7 were prepared from 3-desoxy-7,8-dihydro-14-hydroxymorphinone (1). The key step in this synthetic sequence, O-methylation in position 14, was accomplished with dimethyl sulfate. Hydrolysis followed by reductive opening of the 4,5-oxygen bridge afforded the phenol 4, which was O-methylated
合成了八个(-)-14-甲氧基吗啡喃-6-系列,并对其进行了生物学评估。由3-脱氧-7,8-二氢-14-羟基吗啡酮(1)制备吗啡酮3-7。该合成序列中的关键步骤,位置14的O-甲基化是通过硫酸二甲酯完成的。水解,然后还原性打开4,5-氧桥,得到苯酚4,将其进行O-甲基化,得到5。除去4-OH基团得到芳族未取代的吗啡喃7。9和10的合成通过从14-甲氧基-7,8-二氢可待因酮开始,并涉及类似的反应序列。化合物12-15由羟吗啡酮(11)合成,该羟甲基吗啡经3-O-苄基化,6,14-双-O-甲基化与硫酸二甲酯,水解和氢化得到羟吗啡酮14-O-甲基醚15。导数3、4、5、7、9 皮下和口服给药后,在小鼠的热板测定中,图10、14和15显示出高的抗伤害感受力。该系列中最有效的衍生物(15)的效价(sc)比吗啡高约400倍,比其14-OH类似物羟吗啡酮(11)高约40倍。与[3H]纳洛酮作为配体相比