×

Biologically reversible phosphate and phosphonate protective gruops

  • US 4,968,788 A
  • Filed: 01/23/1989
  • Issued: 11/06/1990
  • Est. Priority Date: 04/04/1986
  • Status: Expired due to Term
First Claim
Patent Images

1. Compounds having the formula ##STR16## where R1 is selected from the group consisting of H, alkyl hydrocarbons having 1-10 carbons, aryl and alkaryl hydrocarbons having 6-10 carbons, and amines having the formula NR4 R5, where R4 and R5 are independently selected from the group consisting of H and alkyl hydrocarbons having 1-10 carbons;

  • R3 is selected from the group consisting of H and alkyl hydrocarbons having 1-3 carbons;

    X1 is selected from the group consisting of H andX2 is selected from the group consisting of R2 and OR2 ; and

    R2 is selected from the group consisting of H, alkyl hydrocarbons having 1-10 carbons, aryl and alkaryl hydrocarbons having 6-10 carbons, and nucleosides.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×