Patents by Inventor Yuefei Hu

Yuefei Hu 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).

  • Benz(epsilon)indene compounds
    Patent number: 5434274
    Abstract: Neuroactive benz[e]indene compounds ##STR1## are prepared by a total synthesis from the following three starting materials ##STR2##
    Type: Grant
    Filed: March 2, 1994
    Date of Patent: July 18, 1995
    Assignee: Washington University
    Inventors: Douglas F. Covey, Yuefei Hu, Mingcheng Han, Charles F. Zorumski
  • Tricycle steroid analogs
    Patent number: 5344826
    Abstract: Novel tricyclic steriod analogs are disclosed which are 1H-benz[e]indene dodecahydro compounds that are useful for enhancing GABA-induced chloride currents at the GABA receptor/chloride ionophore complex and can be represented by the following structural formulas: ##STR1## wherein R.sub.1 =H or C.sub.1 -C.sub.4 alkyl or fluoroalkyl;R.sub.2 =H or C.sub.1 -C.sub.4 alkyl or fluoroalkyl, in which R.sub.1 and R.sub.2 can be the same or different;R.sub.3 =H or CH.sub.3 ;R.sub.4 =H or CH.sub.3, in which R.sub.3 and R.sub.4 can be the same or different;R.sub.5 =H;R.sub.6 =H;R.sub.5,R.sub.6 =.dbd.O(carbonyl);R.sub.7 =H;R.sub.8 =a hydrogen bond accepting group.R.sub.7,R.sub.8 =.dbd.O(carbonyl); andR'=an ester group.
    Type: Grant
    Filed: October 15, 1993
    Date of Patent: September 6, 1994
    Assignee: Washington University
    Inventors: Douglas F. Covey, Yuefei Hu, Charles F. Zorumski
  • Tricyclic steroid analogs
    Patent number: 5292906
    Abstract: Novel tricyclic steroid analogs are disclosed which are 1H-benz[e]indene dodecahydro compounds that are useful for enhancing GABA-induced chloride currents at the GABA receptor/chloride ionophore complex and can be represented by the following structural formulas: ##STR1## wherein R.sub.1 =H or C.sub.1 -C.sub.4 alkyl or fluoroalkyl;R.sub.2 =H or C.sub.1 -C.sub.4 alkyl or fluoroalkyl, in which R.sub.1 and R.sub.2 can be the same or different;R.sub.3 =H or CH.sub.3 ;R.sub.4 =H or CH.sub.3, in which R.sub.3 and R.sub.4 can be the same or different;R.sub.5 =H;R.sub.6 =H;R.sub.5,R.sub.6 =.dbd.O(carbonyl);R.sub.7 =H;R.sub.8 =a hydrogen bond accepting group.R.sub.7,R.sub.8 =.dbd.O(carbonyl); andR'=an ester group.
    Type: Grant
    Filed: January 14, 1993
    Date of Patent: March 8, 1994
    Assignee: Washington University
    Inventors: Douglas F. Covey, Yuefei Hu, Charles F. Zorumski
  • Tricyclic steroid analogs
    Patent number: 5206415
    Abstract: Novel tricyclic steriod analogs are disclosed which are 1H-benz[e]indene dodecahydro compounds that are useful for enhancing GABA-induced chloride currents at the GABA receptor/chloride ionophore complex and can be represented by the following structural formulas: ##STR1## wherein R.sub.1 =H or C.sub.1 -C.sub.4 alkyl or fluoroalkyl;R.sub.2 =H or C.sub.1 -C.sub.4 alkyl or fluoroalkyl, in which R.sub.1 and R.sub.2 can be the same or different;R.sub.3 =H or CH.sub.3 ;R.sub.4 =H or CH.sub.3, in which R.sub.3 and R.sub.4 can be the same or different;R.sub.5 =H;R.sub.6 =H;R.sub.5,R.sub.6 =.dbd.O(carbonyl);R.sub.7 =H;R.sub.8 =a hydrogen bond accepting group.R.sub.7,R.sub.8 =.dbd.O(carbonyl); andR'=an ester group.
    Type: Grant
    Filed: December 20, 1991
    Date of Patent: April 27, 1993
    Assignee: Washington University
    Inventors: Douglas F. Covey, Yuefei Hu, Charles F. Zorumski