Patents by Inventor Rebecca L. S. Chan

Rebecca L. S. Chan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • N-heterocyclic retinoic acid analogues
    Patent number: 4526787
    Abstract: A compound of the formula: ##STR1## where X is ##STR2## and R is hydroxy, or an alkoxy with 0 or 1 hydroxy substituent, or aroxy with 0 or 1 hydroxy substituent, or alkoxy monosubstituted phenoxy, or NR.sup.1 R.sup.2 where R.sup.1 is hydrogen, or an alkyl or aryl with 0 or 1 hydroxy substituent, and R.sup.2 is an alkyl or aryl with 0 or 1 hydroxy substituent. These compounds are useful as chemopreventive agents for inhibiting tumor promotion in ephithelial cells and for treating nonmalignant skin disorders.
    Type: Grant
    Filed: March 28, 1983
    Date of Patent: July 2, 1985
    Assignee: SRI International
    Inventors: Marcia I. Dawson, Rebecca L. S. Chan, Peter D. Hobbs
  • Naphtenic and heterocyclic retinoic acid analogues
    Patent number: 4518609
    Abstract: Naphthenic and heterocyclic retinoic acid analogues such as (E)-6-[2-(2,6,6-trimethyl-1-cyclohexen-1-yl)ethenyl]-2-naphthaldehyde, methyl 6-[2-(2,6,6-trimethyl-1-cyclohexen-1-yl)ethenyl]-2-naphthoate, 6-[2-(2,6,6-trimethyl-1-cyclohexen-1-yl)ethenyl]-2-naphthoic acid, (E)-1-(5-carbethoxy-2-furanyl)-2-methyl-4-(2,6,6-trimethyl-1-cyclohexen-1- yl)-1,3-butadiene, (E)-1-(5-carboxy-2-furanyl)-2-methyl-4-(2,6,6-trimethyl-1-cyclohexen-1-yl) -1,3-butadiene, (E)-1-(5-carbethoxythien-2-yl)-2-methyl-4-(2,6,6-trimethyl-1-cyclohexen-1- yl)-1,3-butadiene, and (E)-1-(5-carboxythien-2-yl)-2-methyl-4-(2,6,6-trimethyl-1-cyclohexen-1-yl) -1,3-butadiene. These retinoids are useful as chemopreventive agents for inhibiting tumor promotion in epithelial cells and for treating nonmalignant skin disorders.
    Type: Grant
    Filed: April 12, 1984
    Date of Patent: May 21, 1985
    Assignee: SRI International
    Inventors: Marcia I. Dawson, Rebecca L. S. Chan
  • Open chain analogues of retinoic acid
    Patent number: 4490414
    Abstract: Open ring retinoic acid analogues and 2Z isomers of the formula ##STR1## where X is ##STR2## and R is hydroxy, alkoxy with 0 or 1 hydroxy substituent, aroxy with 0 or 1 hydroxy or alkoxy-monosubstituted phenoxy or NR.sup.1 R.sup.2 where R.sup.1 is hydrogen, alkyl, or aryl and R.sup.2 is alkyl or aryl are disclosed. These retinoids are useful as chemopreventive agents for inhibiting tumor promotion in epithelial cells and for treating nonmalignant skin disorders.
    Type: Grant
    Filed: May 11, 1983
    Date of Patent: December 25, 1984
    Assignee: SRI International
    Inventors: Marcia I. Dawson, Rebecca L. S. Chan
  • Naphthenic and heterocyclic retinoic acid analogues
    Patent number: 4456618
    Abstract: Naphthenic and heterocyclic retinoic acid analogues such as (E)-6-[2-(2,6,6-trimethyl-1-cyclohexen-1-yl)ethenyl]-2-naphthaldehyde, methyl 6-[2-(2,6,6-trimethyl-1-cyclohexen-1-yl)ethenyl]-2-naphthoate, 6-[2-(2,6,6-trimethyl-1-cyclohexen-1-yl)ethenyl]-2-naphthoic acid, (E)-1-(5-carbethoxy-2-furanyl)-2-methyl-4-(2,6,6-trimethyl-1-cyclohexen-1- yl)-1,3-butadiene, (E)-1-(5-carboxy-2-furanyl)-2-methyl-4-(2,6,6-trimethyl-1-cyclohexen-1-yl) -1,3-butadiene, (E)-1-(5-carbethoxythien-2-yl)-2-methyl-4-(2,6,6-trimethyl-1-cyclohexen-1- yl)-1,3-butadiene, and (E)-1-(5-carboxythien-2-yl)-2-methyl-4-(2,6,6-trimethyl-1-cyclohexen-1-yl) -1,3-butadiene. These retinoids are useful as chemopreventive agents for inhibiting tumor promotion in epithelial cells and for treating nonmalignant skin disorders.
    Type: Grant
    Filed: October 15, 1982
    Date of Patent: June 26, 1984
    Assignee: SRI International
    Inventors: Marcia I. Dawson, Rebecca L. S. Chan