摘要:
Compounds of formula (I) in which: R1 represents a hydrogen atom or an O-protecting group; R2 represents a hydroxyl, lower alkoxy, carboxaldehyde, lower alk-1-enyl or hydroxy- or lower alkoxy-substituted lower alkyl group; R3 represents a methyl group having α- or β-configuration; X represents a C1-3 alkylene group or a valence bond; Y represents a carboxaldehyde group or a group of formula —C(R4)(R5)OR1 where R1 is as defined above and R4 and R5, which may be the same or different, are each selected from hydrogen atoms, alkyl, alkenyl and alkynyl groups such that the total carbon content of R4 and R5 does not exceed three atoms, with the proviso that X is a valence bond when both R4 and R5 are other than hydrogen; and the dotted line signifies that a double bond may optionally be present at the 16(17)-position exhibit potent cell modulating activity, including antiproliferative and antiangiogenic effects.
摘要翻译:式(I)的化合物,其中:R 1表示氢原子或O-保护基; R 2表示羟基,低级烷氧基,甲醛,低级烷-1-烯基或羟基或低级烷氧基取代的低级烷基; R 3表示具有α-或β-构型的甲基; X表示C 1-3亚烷基或价键; Y表示甲醛基或式-C(R 4)(R 5)或其中R 1的基团, / SUP>如上所定义,R 4和R 5和R 5可以相同或不同,各自选自氢原子,烷基,烯基和炔基,例如 R 4和R 5的总碳含量不超过三个原子,条件是当R 4和R 4均为两价时,X为价键 >和R 5不同于氢; 并且虚线表示在16(17)位上任选存在双键表现出有力的细胞调节活性,包括抗增殖和抗血管生成作用。
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。
摘要:
The present invention relates to novel 1.alpha.-hydroxy vitamin D derivatives in which the 17-position side chain carries an azide or optionally substituted 1,2,3-triazole group, including compounds of general formula (I) where R.sup.1 represents a methyl group having .alpha.- or .beta.-configuration; W represents a valence bond or a C.sub.1-5 alkylene group; X represents azide or an optionally substituted triazole group; and A.dbd. represents a cyclohexylidene moiety characteristic of the A-ring of a 1.alpha.-hydroxylated vitamin D or analogue thereof. Active compounds of the invention exhibit cell modulating activity while exhibiting a substantial lack of calcaemic effect.
摘要:
The present invention relates to compounds of general formula (I) ##STR1## where R.sup.1 and R.sup.2, which may be the same or different, each represent a hydrogen atom or an aliphatic, cycloaliphatic, araliphatic or aryl group or together with the nitrogen atom to which they are attached form a heterocyclic group; R.sup.3 represents a methyl group having .alpha.- or .beta.-configuration; one of R.sup.a and R.sup.b represents a hydroxy group or protected hydroxy group and the other represents a hydrogen atom; Y represents a valence bond or an alkylene group containing up to 3 carbon atoms; and A= represents a cyclohexylidene moiety characteristic of the A-ring of a 1.alpha.-hydroxylated vitamin D or analogue thereof. Active compounds of the invention exhibit separation of cell modulating and calcaemic activities coupled with enhanced duration of activity.
摘要:
Compounds of the general formula ##STR1## wherein R represents a hydrogen atom or a hydroxyl protecting group, Y represents a hydrogen atom or an optionally protected hydroxyl group, X represents the residue of a dienophile and either R.sup.1 represents a halogen atom a hydrocarbylsulphonyloxy group or a group of the formula --Z--R.sup.3 (in which Z represents --O--, --S--, --SO--, --NR.sup.4 -- or --CR.sup.4 R.sup.5 -- and R.sup.3, R.sup.4 and R.sup.5, which may be the same or different, each represent a hydrogen atom or a straight or branched aliphatic group having 1-12 carbon atoms and which may optionally carry one or more substituents) and R.sup.2 represents a hydrogen atom or R.sup.1 and R.sup.2 together represent an oxo group or an optionally substituted alkylidene group, except that R.sup.1 and R.sup.2 together with the group --CH(CH.sub.3)CH-- to which they are attached do not represent a group having the branched 17.beta.-hydrocarbyl side chain skeleton of vitamin D.sub.2 or vitamin D.sub.3 or use in the preparation of novel vitamin D analogues.
摘要:
Novel compounds of general formula ##STR1## (where R.sup.1 and R.sup.2, which may be the same or different, are hydrogen atoms or alkyl groups; and R.sup.3 and R.sup.4, which may be the same or different, represent alkyl groups which may carry substituents, R.sup.4 alternatively representing a hydrogen atom; or R.sup.3 and R.sup.4 together with the intervening N represent a heterocyclic group or an acid-addition salt thereof) are provided, together with a process for their preparation. The new compounds are useful as antidepressants.
摘要翻译:新的通式为“IMAGE”的化合物(其中R 1和R 2可以相同或不同,为氢原子或烷基; R 3和R 4可相同或不同,表示可带有取代基的烷基, R4替代地代表氢原子;或R3和R4连同中间的N代表杂环基或其酸加成盐)及其制备方法。 新化合物可用作抗抑郁药。
摘要:
The present invention relates to novel 1.alpha.-hydroxy vitamin D derivatives in which the 17-position side chain carries an azide or optionally substituted 1,2,3-triazole group, including compounds of general formula (I) where R.sup.1 represents a methyl group having .alpha.- or .beta.-configuration; W represents a valence bond or a C.sub.1-5 alkylene group; X represents azide or an optionally substituted triazole group; and A=represents a cyclohexylidene moiety characteristic of the A-ring of a 1.alpha.-hydroxylated vitamin D or analogue thereof. Active compounds of the invention exhibit cell modulating activity while exhibiting a substantial lack of calcaemic effect. ##STR1##
摘要:
Saturated organic compounds containing a hydrogen atom bound to a tertiary carbon atom may be electrophilically fluorinated by reaction with an electrophilic fluorinating agent such as molecular fluorine or trifluoromethyl hypofluorite under conditions whereby the formation of free fluorine radicals is suppressed, e.g. by the presence of a free radical inhibitor such as oxygen or nitrobenzene, the reactants being substantially homogeneously dispersed in a liquid medium, e.g. a solvent medium such as fluorotrichloromethane or chloroform/fluorotrichloromethane, so that the said hydrogen atom is electrophilically replaced by a fluorine atom. The fluorination is highly selective and, in the case of complex substrates such as saturated steroids which contain a number of tertiary C--H bonds, may be substantially completely confined to replacement of the hydrogen atom at the tertiary carbon atom which has the highest electron density about the C--H bond. The electron density and thus the direction of the fluorination may be controlled by appropriate selection of substituent groupings in the substrate molecule.Novel 14.alpha.-fluorosteroids are also disclosed, including compounds having valuable androgenic or progestational activity and useful synthetic intermediates.
摘要:
The Specification describes a synthetic route for the preparation of a 9,11-dehydro-3-oxygenated 17.alpha.-hydroxy-20-ketopregnane which comprises the steps (i) electrophilically fluorinating a saturated 9,11-unsubstituted 3-oxygenated-17.alpha.-(esterified hydroxy)-20-ketopregnane, (ii) dehydrofluorinating the resulting 9.alpha.-fluorosteroid, if desired after transformations elsewhere in the molecule have been effected, and (iii) cleaving the ester group at the 17.alpha.-position to generate a 17.alpha.-hydroxy group.