New modulators of estradiol receptors were synthesized, 17(gamma-alkoxy-3-oxo-8-isoestr-5(10)-enes) and the respective D-homoanalogs. Reaction of these compounds with CuBr2 in acetonitrile famished steroids with aromatic A ring possessing hypocholesterolemic and osteoprotective activity.
Catalytic hydrogenation on Raney nickel of estra-1,3,5(10),8,14-pentaenes with sterically accessible double bonds
摘要:
The catalytic hydrogenation of estra-1,3,5(10),8,14-pentaenes with sterically accessible double bonds in the presence of Raney nickel in 2-propanol at elevated pressure and at heating to 110-120 degrees C resulted in prevailing formation of estrogens 8 alpha-analogs alongside a considerable quantity of estra-5,7,9-trienes. Although the hydrogenation at 45-60 degrees C provided a higher yield of estrogens 8 alpha-analogs, the synthesis of steroids of this group gave better results at hydrogenation in a high purity benzene.
Synthesis and biological activity of some 8α-analogs of steroidal estrogens
作者:S. N. Morozkina、Sh. N. Abusalimov、S. I. Selivanov、A. G. Shavva
DOI:10.1134/s1070428013040180
日期:2013.4
8 alpha-Analogs of steroidal estrogens containing a methyl group on C-1 or an oxo group on C-6 were synthesized with a view to obtain compounds exhibiting selective biological activity, and their steric structure was studied. As shown with 1,3-O-dimethyl-8 alpha-estrone as an example, such compounds in solution can exist as two conformers, whereas the oxo group on C-6 almost does not affect conformation of the modified derivative as compared to the parent structure. Some newly synthesized compounds exhibited hypocholesterolemic activity in combination with reduced uterotropic effect, which is important for the design of drugs for the treatment of atherosclerosis. 6-Oxo-8 alpha-analogs showed osteoprotective activity, so that introduction of an oxo group into the 6-position is promising from the viewpoint of hormone replacement therapy.
Shavva, A. G.; Eliseev, I. I.; Burova, E. B., Russian Journal of Organic Chemistry, 1986, vol. 22, p. 391 - 392
作者:Shavva, A. G.、Eliseev, I. I.、Burova, E. B.、Koval'chuk, S. V.、Gindin, V. A.