Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – 9,10-seco- cyclopentanohydrophenanthrene ring system doai
Patent
1995-05-23
1996-09-03
Prior, Kimberly J.
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
9,10-seco- cyclopentanohydrophenanthrene ring system doai
552653, A61K 3159, C07C40100
Patent
active
055523935
ABSTRACT:
21-norvitamin D.sub.3 analogs in which the methyl group normally attached to the side chain at carbon 20 has been replaced by a hydrogen atom. The compounds are characterized by a marked intestinal calcium transport activity while exhibiting much lower activity than 1.alpha.,25-dihydroxyvitamin D.sub.3 in their ability to mobilize calcium from bone. Because of their preferential calemic activity, these compounds would be useful for the treatment of diseases where bone formation is desired, such as osteodystrophy. Novel intermediates formed during the synthesis of the end products are also disclosed.
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patent: 5384313 (1995-01-01), DeLuca et al.
Kubodera et al, "Synthetic Studies of Vitamin D Analogues. X. Sythesis and Biological Activities of 1.alpha.,25-Dihydroxy-21-Nor-Vitamin D.sub.3 ", Chem. Pharm. Bull., vol. 40, No. 3, pp. 648-651, 1992.
Pumar et al, "Estudios en la sintesis de metabolitos de la vitamin D y analogos. Sintesis de triacetato de 1.alpha.,3.beta.,25-trihidroxi-21-nor colesta-5,7-dieno", Anales De Quimica, vol. 84, No. 1, pp. 105-111, 1988.
Lam et al, "Structural analogs of 1.alpha.,25-dihydroxycholecalciferol: preparation and biological assay of 1.alpha.-hydroxypregnacalciferol", Steroids, vol. 26, No. 4, pp. 422-436, 1975.
DeLuca Hector F.
Wicha Jerzy
Prior Kimberly J.
Wisconsin Alumni Research Foundation
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