FIELD: organic chemistry, steroids.
SUBSTANCE: invention discloses derivatives of steroid sapogenins of the general formula (I): 
wherein R means alkylcarbonyl, alkoxycarbonyl substituted possibly with amino-group and others under condition that R is not acetyl and R is not ethoxycarbonyl if C3 is in S and C25 in R-configurations simultaneously; R is nor succinyl if C3 and C25 are in S-configuration simultaneously, or C3 R(α) or S(β), and C25 in R-configuration. Also, invention discloses using these compounds in treatment of cognitive dysfunction, noncognitive neurodegeneration, noncognitive neuromuscular degeneration and loss of receptors in absence of cognitive, nervous and neuromuscular insufficiency. Also, invention discloses methods for synthesis of these compounds, treatment and pharmaceutical composition containing thereof.
EFFECT: improved method of synthesis, valuable medicinal properties of compounds and pharmaceutical compositions.
30 cl, 2 tbl, 5 dwg, 16 ex
