申请人:Research Institute for Medicine and Chemistry, Inc.
公开号:US07235552B1
公开(公告)日:2007-06-26
Novel sterol derivatives of formula (I), in which: R1 represents a hydroxyl group or protected hydroxyl group, R2 represents a hydrogen atom and a double bond is present at c, or R1 and R2 together represent an oxo group and a double bond is present at b or double bonds are present at a and b; R3 represents a methyl group having α- or β-configuration; R4 and R5, which may be the same or different, are selected from hydrogen atoms and aliphatic, cycloaliphatic, araliphatic and aryl groups, or together with the nitrogen atom to which they are attached form a heterocyclic group; and X represents a polymethylene group containing 2–5 carbon atoms, an oxa group-containing analogue thereof in which a methylene group other than that attached to the —CO.NR4R5 moiety is replaced by an oxygen atom, or an unsaturated analogue thereof containing up to two double bonds. Active compounds of the invention exhibit potent effects on the modulation of cell growth and differentiation and possess an advantageous therapeutic ratio by virtue of their low levels of calcaemic activity.
公式(I)的新颖甾醇衍生物,其中:R1代表羟基或被保护的羟基,R2代表氢原子且c处存在双键,或者R1和R2共同代表氧代基,且b处存在双键或a和b处存在双键;R3代表具有α-或β-构型的甲基;R4和R5相同或不同,选自氢原子、脂肪族、环脂肪族、芳香脂肪族和芳香族,或者与它们所连接的氮原子共同形成一个杂环族;X代表含2-5个碳原子的多亚甲基基团,含氧基团的类似物,其中与—CO.NR4R5部分连接的亚甲基基团以外的亚甲基基团由氧原子代替,或含多达两个双键的不饱和类似物。本发明的活性化合物对细胞生长和分化的调节具有显著效果,并且由于它们具有较低的升高钙血活性的水平,因此具有有利的治疗比。