Vitamin d derivatives

C - Chemistry – Metallurgy – 07 – J

Patent

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Details

C07J 75/00 (2006.01) C07J 5/00 (2006.01) C07J 9/00 (2006.01)

Patent

CA 2664720

Provided are vitamin D derivatives which exhibit excellent physiologic activities suitable for drugs, particularly remedies for dermatoses such as psoriasis, and are lowered in the calcium increasing activity. The derivatives are represented by the general formula (1) : (1) wherein X is oxygen or sulfur; m is a number of 1 to 3; R1 and R2 are each hydrogen or alkyl; R4 and R5 are each hydrogen, hydroxyl, or the like; R3 is YR8 or the like; R6 is hydrogen or the like; and R7 is hydrogen or the like.

L'invention porte sur des dérivés de la vitamine D qui présentent une activité physiologique excellente, utilisables dans des médicaments, en particulier les remèdes contre les dermatoses telles que le psoriasis. Ces dérivés réduisent l'effet hypercalcémique. Les dérivés sont représentés par la formule générale suivante : (1) où X est un oxygène ou un soufre; m est un chiffre de 1 à 3; R1 et R2 sont chacun, un hydrogène ou un alkyle; R4 et R5 sont chacun un hydrogène, un groupe hydroxyle ou un groupe apparenté; R3 est YR8 ou un composé apparenté; R6 est un hydrogène ou un élément apparenté; et R7 est un hydrogène ou un atome apparenté.

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