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24-homo vitamin D derivatives, process for their production and pharmaceutical preparations obtained therefrom

  • US 5,665,716 A
  • Filed: 10/02/1990
  • Issued: 09/09/1997
  • Est. Priority Date: 10/02/1989
  • Status: Expired due to Fees
First Claim
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1. A 24-homo vitamin D derivative of formula I ##STR10## in which R1 is hydrogen, hydroxy, alkanoyloxy of 1 to 8 carbon atoms or benzoyloxy,R2 and R3, independently of one another, each is alkyl of 1 to 4 carbon atoms, or trifluoromethyl or together form a saturated carbocyclic ring of 3 to 9 carbon atoms formed with carbon atom 25,R4 and R5, independently of one another, each is hydrogen, alkanoyl of 1 to 8 carbon atoms or benzoyl,A and B each are hydrogen or together form a second bond, andn is 1, 2, 3,4 or 5.

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