Oxazolinyl derivatives of [17(20)E]-21-norpregnene differing in the structure of A and B rings. Facile synthesis and inhibition of CYP17A1 catalytic activity
作者:Vladimir A. Kostin、Vladimir A. Zolottsev、Alexey V. Kuzikov、Rami A. Masamrekh、Victoria V. Shumyantseva、Alexander V. Veselovsky、Sergey V. Stulov、Roman A. Novikov、Vladimir P. Timofeev、Alexander Y. Misharin
DOI:10.1016/j.steroids.2016.06.002
日期:2016.11
6-dioxo-4-ene (2), 3-oxo-4-ene (3), 3α,5α-cyclo-6-oxo (4), 3β-hydroxy-6-oxo (5) fragments were synthesized. Synthesis was conducted with improved procedure, based on reaction of suitably protected [17(20)E]-pregnen-21-oic acids with ethanolamine in presence of triphenyl phosphine, carbon tetrachloride, and triethyl amine. Potency of the compounds 1-5 to inhibit 17α-hydroxylase/17,20-lyase (CYP17A1) activity
[17(20)E]-21-norpregnene 的五种 4,5-dihydro-1,3-oxazole 衍生物,包括 3β-hydroxy-5-ene (1), 3,6-dioxo-4-ene (2) , 3-oxo-4-ene (3), 3α,5α-cyclo-6-oxo (4), 3β-hydroxy-6-oxo (5) 片段被合成。基于适当保护的 [17(20)E]-孕烯-21-油酸与乙醇胺在三苯基膦、四氯化碳和三乙胺存在下的反应,以改进的程序进行合成。使用酶固定化技术,通过高度灵敏的电化学方法研究了化合物 1-5 抑制 17α-羟化酶/17,20-裂解酶 (CYP17A1) 活性的效力。发现化合物 1 和 3 是有效的 CYP17A1 抑制剂,化合物 2 和 5 没有活性,化合物 4 强烈且不可逆地抑制酶活性。