Novel vitamin d analogues

C - Chemistry – Metallurgy – 07 – C

Patent

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Details

C07C 401/00 (2006.01) A61K 31/59 (2006.01) A61P 19/10 (2006.01)

Patent

CA 2397081

Compounds of the formula (I) wherein X represents hydrogen or hydroxy; R1 and R2, which may be the same or different, represent hydrogen, (C1-C4)alkyl optionally substituted with one hydroxyl group or one or more fluorine atoms, or, together with the carbon atom to which they are attached, R1 and R2 form a (C3-C5)carbocyclic ring; R3 represents (C1-C4)alkyl, (C1-C4)alkoxy or a halogen atom, such as fluorine, chlorine, bromine, or iodine, and in-vivo hydrolyzable esters thereof with pharmaceutically acceptable acids, may be used in the prophylaxis and/or treatment of diseases characterized by abnormal cell differentiation and/or cell proliferation.

La présente invention concerne des composés de formule (I), dans laquelle X représente hydrogène ou hydroxy; R?1¿ et R?2¿, qui peuvent être identiques ou différents, représentent hydrogène, alkyle (C¿1?-C¿4?) éventuellement substitué avec un groupe hydroxyle ou un ou plusieurs atomes de fluor, ou, avec le carbone auquel ils sont liés, R?1¿ et R?2¿ forment un cycle (C¿3?-C¿5?)carbocyclique; R?3¿ représente alkyle (C¿1?-C¿4?), alkoxy (C¿1?-C¿4?) ou un atome d'halogène, tel que fluor, chlore, brome ou iode. Selon cette invention, lesdits composés, ainsi que des esters hydrolysables in-vivo de ces composés, avec des acides qui sont acceptables d'un point de vue pharmaceutique, peuvent être utilisés dans la prophylaxie et/ou le traitement de maladies caractérisées par une différenciation cellulaire et/ou une prolifération cellulaire anormales.

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