摘要:
Compounds of Formula (I) in which: R1 and R2, which may be the same or different, each represents a lower alkyl, alkenyl or alkynyl group; R3 represents a methyl group having α- or β-configuration; R4 represents a hydrogen atom or an etherifying or esterifying group; R5 represents a hydrogen atom, a hydroxyl group or a lower alkoxy group; X represents a group OR4, wherein R4 is as defined above, or a group NR6R7 wherein R6 represents a hydrogen atom, an aliphatic or araliphatic organic group, or an acyl group comprising an aliphatic, araliphatic or aryl organic group linked to the nitrogen atom by way of a carbonyl group; and R7 is a hydrogen atom or a lower alkyl group; Y represents a lower alkylene, alkenylene or alkynylene group optionally substituted by a hydroxyl, etherified hydroxyl or esterified hydroxyl group; and the dotted lines signify that double bonds may be present at the 16(17)-position and/or either at the 6(7)- and 8(9)-positions or at the 7(8)-position exhibit potent effects on modulation of cell growth and differentiation, while having low calcaemic activity.
摘要翻译:其中:R 1和R 2各自可以相同或不同的式(I)化合物各自表示低级烷基,烯基或炔基; R 3表示具有α-或β-构型的甲基; R 4表示氢原子或醚化或酯化基团; R 5表示氢原子,羟基或低级烷氧基; X表示基团OR 4,其中R 4如上所定义,或基团NR 6 R 7, 其中R 6表示氢原子,脂族或芳脂族有机基团或包含通过羰基与氮原子连接的脂族,芳脂族或芳基有机基团的酰基; R 7是氢原子或低级烷基; Y表示任选被羟基醚化的羟基或酯化的羟基取代的低级亚烷基,亚烯基或亚炔基; 并且虚线表示双键可能存在于16(17) - 位和/或在6(7) - 和8(9) - 位置或7(8)位上,表现出对 调节细胞生长和分化,同时具有低钙化活性。
摘要:
Formula (I) in which: R1 and R2, which may be the same or different, each represents a lower alkyl, alkenyl or alkynyl group; R3 represents a methyl group having α- or β-configuration; R4 represents a hydrogen atom or an etherifying or esterifying group; R5 represents a hydrogen atom, a hydroxyl group or a lower alkoxy group; X represents a group OR4, or a group NR6R7 wherein R6 represents a hydrogen atom, an aliphatic or araliphatic group, or an acyl group comprising an aliphatic, araliphatic or aryl group linked to the nitrogen atom by way of a carbonyl group; and R7 is a hydrogen atom or a lower alkyl group; Y represents a lower alkylene, alkenylene or alkynylene group optionally substituted by a hydroxyl, etherified hydroxyl or esterified hydroxyl group; exhibit potent effects on modulation of cell growth and differentiation, while having low calcaemic activity.
摘要翻译:式(I)其中:R 1和R 2可以相同或不同,各自表示低级烷基,烯基或炔基; R 3表示具有α-或β-构型的甲基; R 4表示氢原子或醚化或酯化基团; R 5表示氢原子,羟基或低级烷氧基; X表示基团OR 4或其中R 6表示氢原子的基团,其中R 6表示氢原子, 脂族或芳脂族基团,或包含通过羰基与氮原子连接的脂族,芳脂族基或芳基的酰基; R 7是氢原子或低级烷基; Y表示任选被羟基醚化的羟基或酯化的羟基取代的低级亚烷基,亚烯基或亚炔基; 对细胞生长和分化的调节表现出有效的作用,同时具有低的钙离子活性。