Patents Assigned to Oral-D
  • Substituted orally effective ION chelators related to deferoxamine
    Patent number: 5550161
    Abstract: Compounds are described of the general formula: ##STR1## wherein: R.sub.1 is acyl of the formula --C(=O)-R.sub.5 : R.sub.2, R.sub.3, R.sub.4, R.sub.6, R.sub.7 and R.sub.8 are each selected from the group consisting of hydrogen and acyl of the formula:--C(=O)-R.sub.5wherein R.sub.5 is selected from the group consisting of alkyls, substituted alkyls, alkenyls, substituted alkenyls, cycloalkyls, substituted cycloalkyls, arylalkylenes, substituted arylalkylenes, alkylenecycloalkyls, alkylene substituted cycloalkyls, alkynyls, substituted alkynyls, aryls and substituted aryls, wherein R.sub.2, R.sub.3 and R.sub.4 are selected such that at least one of R.sub.2, R.sub.3 and R.sub.4 is an acyl.When R.sub.2, R.sub.3 and R.sub.4 include one or more acyls that are not identical to the acyl of R.sub.1, these compounds of formula I are novel compounds. The invention also includes processes to produce the compounds of formula I.
    Type: Grant
    Filed: October 28, 1993
    Date of Patent: August 27, 1996
    Assignee: Oral-D
    Inventor: Donald E. Green
  • Orally effective ion chelators
    Patent number: 5047421
    Abstract: Compounds are described of the general formula: ##STR1## wherein: R.sub.1 is acyl of the formula --C(.dbd.O)--R.sub.5 ; R.sub.2, R.sub.3, and R.sub.4 are each selected from the group consisting of hydrogen and acyl of the formula:--C(.dbd.O)--R.sub.5wherein R.sub.5 is selected from the group consisting of alkyls, substituted alkyls, alkenyls, substituted alkenyls, cycloalkyls, substituted cycloalkyls, arylalkylenes, substituted arylalkylenes, alkylenecycloalkyls, alkylene substituted cycloalkyls, alkynyls substituted alkynyls, aryls and substituted aryls, wherein R.sub.2, R.sub.3 and R.sub.4 are selected such that at least one of R.sub.2, R.sub.3 and R.sub.4 is an acyl.When R.sub.2, R.sub.3 and R.sub.4 include one or more acyls that are not identical to the acyl of R.sub.1, these compounds of formula I are novel compounds. The invention also includes processes to produce the compounds of formula I.Compounds of formula I complex and/or chelate tissue tri-valent ions, especially iron (Fe.sup.
    Type: Grant
    Filed: July 31, 1987
    Date of Patent: September 10, 1991
    Assignee: Oral-D
    Inventor: Donald E. Green
  • Orally effective ion chelators
    Patent number: 4671901
    Abstract: Compounds are described of the general formula: ##STR1## wherein: R.sub.1 is acyl of the formula --C(.dbd.O)--R.sub.5 ; R.sub.2, R.sub.3, R.sub.4, R.sub.6, R.sub.7 and R.sub.8 are each selected from the group consisting of hydrogen and acyl of the formula:--C(.dbd.O)--R.sub.5wherein R.sub.5 is selected from the group consisting of alkyls, substituted alkyls, alkenyls, substituted alkenyls, cycloalkyls, substituted cycloalkyls, arylalkylenes, substituted arylalkylenes, alkylenecycloalkyls, alkylene substituted cycloalkyls, alkynyls, substituted alkynyls, aryls and substituted aryls, wherein R.sub.2, R.sub.3 and R.sub.4 are selected such that at least one of R.sub.2, R.sub.3 and R.sub.4 is an acyl. When R.sub.2, R.sub.3 and R.sub.4 include one or more acyls that are not identical to the acyl of R.sub.1, these compounds of formula I are novel compounds. The invention also includes processes to produce the compounds of formula I.
    Type: Grant
    Filed: January 24, 1985
    Date of Patent: June 9, 1987
    Assignee: Oral-D
    Inventor: Donald E. Green