Increasing fetal hemoglobin levels using carboxylic esters

A - Human Necessities – 61 – K

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A61K 31/38 (2006.01) A61K 31/22 (2006.01) A61K 31/23 (2006.01) A61K 31/265 (2006.01) A61K 31/335 (2006.01) A61K 31/34 (2006.01) A61K 31/35 (2006.01) A61K 31/355 (2006.01) A61K 31/365 (2006.01)

Patent

CA 2184695

This invention relates to novel methods of increasing tile level of fetal hemoglobin (HbF) in a subject and methods of treating, preventing or ameliorating .beta.-globin or other HbF-related disorders by increasing the level of HbF in a subject in need of such treatment comprising administering one or more compounds of the formulae: (I) XCH2-CHX-CHX-C(-O)-O-Z, (II) CH3-CO-CH2-C(-O)-O-Z or (III) CH3-CH2-CO-C(?O)-O-Z, wherein X is H, or one of X only may be OH; Z is -CHR-O-C(?O)R', -CHR-O-C(?O)-O-R', or (IV) R is H, alkyl, aryl, arylalkyl; and R' is alkyl, ammoalkyl, aralkyl, aryl, alkoxy, aralkoxy and arloxy, in which aryl by itself, and aryl in aralkyl, aralkoxy and aryloxy are each selected from the group consisting of phenyl, naphthyl, furyl, or thienyl, each of which is unsubstituted or substituted by at least one substituent selected from the group consisting of alkyl, alkoxy, or halogen; and pharmaceutically acceptable salts and prodrugs thereof.

La présente invention concerne de nouveaux procédés permettant d'accroître le taux d'hémoglobine foetale (HbF) d'un sujet ainsi que des procédés de traitement, de prévention ou d'amélioration de la beta -globine ou d'autres troubles imputables à la HbF en accroissant le taux de HbF chez un sujet nécessitant un tel traitement, consistant en l'administration d'un ou plusieurs composés des formules (I) XCH2-CHX-CHX-C(=O)-O-Z, (II) CH3-CO-CH2-C(=O)-O-Z ou (III) CH3-CH2-CO-C(=O)-O-Z ou de l'un de ses sels pharmaceutiquement acceptables ou l'un de ses précurseurs médicamenteux. Dans ces formules, X est H, mais l'un des X peut être OH; Z est -CHR-O-C(=O)R', -CHR-O-C(=O)-O-R' ou être représenté par le schéma (IV); R est un H, alkyle, aryle, arylalkyle et R' est un alkyle, aminoalkyle, aralkyle, aryle, alcoxy, aralcoxy et aryloxy. Dans ce dernier radical, l'aryle en tant que tel, l'aryle d'aralkyle, l'aralcoxy et l'aryloxy appartiennent chacun à un groupe formé de phényle, naphtyle, furyle ou thiényle, chacun d'entre eux pouvant être non substitué ou substitué par l'un au moins des substituants appartenant au groupe formé d'alkyle, alcoxy ou halogène.

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