Patents by Inventor Arthur D. Sill

Arthur D. Sill 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).

  • Patent number: 4169897
    Abstract: Novel bis-basic ethers of 9-substituted phenanthrene and related 10-oxa and 10-aza derivatives, their method of preparation and their use as pharmaceutical agents for the prevention and inhibition of viral infections are disclosed.
    Type: Grant
    Filed: November 11, 1976
    Date of Patent: October 2, 1979
    Assignee: Richardson-Merrell Inc.
    Inventors: Donald R. Meyer, Arthur D. Sill, Paul L. Tiernan
  • Patent number: 4073904
    Abstract: Disclosed are novel compounds and pharmaceutical formulations having antiviral activity. The disclosed compounds have the formula ##STR1## wherein one R.sup.2 is a hydrogen atom and the other R.sup.2 is the radical ##STR2## A is a straight chain alkylene group having 2 or 3 carbon atoms and each R.sup.3 and R.sup.4 is a hydrogen atom, and alkyl radical having 1 to 3 carbon atoms or each set of R.sup.3 and R.sup.4 taken together with the nitrogen atom to which they are attached is a saturated monocyclic heterocyclic group. Also included are the acid addition salts of these bases. These compounds may be prepared by various methods which are described.
    Type: Grant
    Filed: January 26, 1976
    Date of Patent: February 14, 1978
    Assignee: Richardson-Merrell, Inc.
    Inventors: Robert W. Fleming, Arthur D. Sill, Francis W. Sweet
  • Patent number: 4064347
    Abstract: The novel bis-basic ketones of fluorene and fluorenone of the present invention have antiviral activity when administered orally and parenterally. These compounds are represented by the following formula: ##STR1## wherein Z is oxygen or H.sub.2 ; each A is a straight or branched alkylene chain having from 1 to about 6 carbon atoms; and each Y isA. the group ##STR2## wherein R.sup.1 and R.sup.2 are individually hydrogen, (lower)alkyl having from 1 to about 6 carbon atoms, cycloalkyl having from 3 to 6 carbon atoms, alkenyl of from 3 to 6 carbon atoms and having the vinyl unsaturation in other than the 1-position of the alkenyl group; orB. the group ##STR3## WHEREIN N IS A WHOLE INTEGER FROM 4 TO 6, AND R.sup.3 is hydrogen, (lower)alkyl of 1 to about 4 carbon atoms, phenyl, or benzyl and can be linked to any one of the carbon atoms of the heterocyclic group; orC. the group ##STR4## wherein X is oxygen or NR.sup.4, and R.sup.4 is hydrogen or (lower)alkyl of from 1 to about 4 carbon atoms; orD.
    Type: Grant
    Filed: February 2, 1973
    Date of Patent: December 20, 1977
    Assignee: Richardson-Merrell Inc.
    Inventors: Robert W. Fleming, Arthur D. Sill, William L. Albrecht, Stephen W. Horgan
  • Patent number: 4048230
    Abstract: Novel 3,6-bis basic ketone derivatives of acenaphthene, their preparation and use for the prevention and inhibition of viral infections are disclosed.
    Type: Grant
    Filed: December 21, 1972
    Date of Patent: September 13, 1977
    Assignee: Richardson-Merrell Inc.
    Inventors: Arthur D. Sill, Francis W. Sweet
  • Patent number: 4008240
    Abstract: Novel 2,7-bis basic alkanol derivatives of xanthene and thioxanthene, their preparation and use for the prevention and inhibition of viral infections are disclosed.
    Type: Grant
    Filed: December 21, 1972
    Date of Patent: February 15, 1977
    Assignee: Richardson-Merrell Inc.
    Inventors: Arthur D. Sill, Francis W. Sweet
  • Patent number: 3983248
    Abstract: Compounds useful as antiviral agents are those of the formula ##SPC1##Wherein each R.sup.1 is hydrogen or methyl; each n is an integer of 2 to 4; each of R.sup.2 and R.sup.3 is alkyl of 3 to 5 carbon atoms or alkenyl of 3 to 5 carbon atoms; or a pharmaceutically acceptable acid addition salt of said base. Pharmaceutical compositions are formed from these compounds with pharmaceutically acceptable carriers.
    Type: Grant
    Filed: August 6, 1971
    Date of Patent: September 28, 1976
    Assignee: Richardson-Merrell Inc.
    Inventors: Johann M. Grisar, Arthur D. Sill, Robert W. Fleming
  • Patent number: 3983124
    Abstract: Novel 2,7-bis-basic derivatives of fluorene, 9-fluorenol and 9-fluorenone, their preparation and use for the prevention and inhibition of virus infections are disclosed.
    Type: Grant
    Filed: December 21, 1972
    Date of Patent: September 28, 1976
    Assignee: Richardson-Merrell Inc.
    Inventors: William L. Albrecht, Stephen W. Horgan, Arthur D. Sill, Robert W. Fleming
  • Patent number: 3974186
    Abstract: Disclosed are novel compounds and pharmaceutical formulations having antiviral activity. The disclosed compounds have the formula ##SPC1##Wherein one R.sup.2 is a hydrogen atom and the other R.sup.2 is the radical ##SPC2##A is a straight chain alkylene group having 2 or 3 carbon atoms and each R.sup.3 and R.sup.4 is a hydrogen atom, an alkyl radical having 1 to 3 carbon atoms or each set of R.sup.3 and R.sup.4 taken together with the nitrogen atom to which they are attached is a saturated monocyclic heterocyclic group. Also included are the acid addition salts of these bases. These compounds may be prepared by various methods which are described.
    Type: Grant
    Filed: September 5, 1973
    Date of Patent: August 10, 1976
    Assignee: Richardson-Merrell Inc.
    Inventors: Robert W. Fleming, Arthur D. Sill, Francis W. Sweet
  • Patent number: 3957988
    Abstract: The novel bis-basic ketones of thioxanthene have antiviral activity when administered orally and parenterally. These compounds are represented by the following formula: ##SPC1##Wherein A is a straight or branched alkylene chain having from 1 to about 6 carbon atoms; and each Y isA. the group ##EQU1## wherein R.sup.1 and R.sup.2 are individually hydrogen or lower alkyl having from 1 to about 4 carbon atoms; orB. the group ##EQU2## WHEREIN N IS A WHOLE INTEGER OF 4 OR 5, AND R.sup.3 is hydrogen or lower alkyl having from 1 to about 4 carbon atoms and can be linked to any one of the carbon atoms of the heterocyclic group; orC. the group ##EQU3## wherein X is oxygen or NR.sup.4, and R.sup.4 is hydrogen or lower alkyl of from 1 to about 4 carbon atoms; or pharmaceutically acceptable acid addition salts of said base.These new compounds can be prepared by several different methods which are described.
    Type: Grant
    Filed: February 20, 1973
    Date of Patent: May 18, 1976
    Assignee: Richardson-Merrell Inc.
    Inventors: Robert W. Fleming, Arthur D. Sill
  • Patent number: 3957989
    Abstract: Novel bis-basic ketones of xanthene and xanthen-9-one have antiviral activity when administered orally and parenterally. The compounds are represented by the following formula: ##SPC1##Wherein Z is oxygen or H.sub.2 ; each A is a straight or branched alkylene chain having from 1 to about 6 carbon atoms; and each Y isA. the group ##EQU1## wherein R.sup.1 and R.sup.2 are individually hydrogen, lower alkyl having from 1 to about 6 carbon atoms, cycloalkyl having from 3 to 6 carbon atoms, alkenyl of from 3 to 6 carbon atoms and having the vinyl unsaturation in other than the 1-position of the alkenyl group; orB. the group ##EQU2## WHEREIN N IS A WHOLE INTEGER FROM 4 TO 6, AND R.sup.3 is hydrogen, lower alkyl of from 1 to about 4 carbon atoms and can be linked to any one of the carbon atoms of the heterocyclic group; orC. the group ##EQU3## wherein X is oxygen or NR.sup.4, and R.sup.4 is hydrogen or lower alkyl of from 1 to about 4 carbon atoms;Or a pharmaceutically acceptable acid addition salt thereof.
    Type: Grant
    Filed: February 20, 1973
    Date of Patent: May 18, 1976
    Assignee: Richardson-Merrell Inc.
    Inventors: Robert W. Fleming, Arthur D. Sill, Francis W. Sweet
  • Patent number: 3957986
    Abstract: Novel bis-basic esters and amides of xanthene and xanthone of the formula ##SPC1##Wherein:Z is oxygen or H.sub.2 ; each of R.sup.1 and R.sup.2 is hydrogen, (lower)-alkyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 6 ring carbon atoms, alkenyl of 3 to 6 carbon atoms having the vinyl unsaturation in other than the 1-position of the alkenyl group, or each set of R.sup.1 and R.sup.2 taken together with the nitrogen atom to which they are attached is pyrrolidino, piperidino, N-(lower)alkylpiperazino, or morpholino;Each A is alkylene of 2 to about 8 carbon atoms and separates its adjacent Y and amino nitrogen by an alkylene chain of at least 2 carbon atoms; and each Y is oxygen, or >N--R wherein R is hydrogen or (lower)-alkyl of 1 to 4 carbon atoms;Or a pharmaceutically acceptable acid addition salt thereof. These compounds can be used as pharmaceuticals for preventing or inhibiting a viral infection.
    Type: Grant
    Filed: July 2, 1973
    Date of Patent: May 18, 1976
    Assignee: Richardson-Merrell Inc.
    Inventors: Albert A. Carr, Robert W. Fleming, Arthur D. Sill
  • Patent number: 3953455
    Abstract: Novel bis basic esters of 9-substituted phenanthrene and related 9-oxa and 9-aza derivatives thereof, their preparation and use for the prevention and inhibition of viral infections are disclosed.
    Type: Grant
    Filed: September 13, 1974
    Date of Patent: April 27, 1976
    Assignee: Richardson-Merrell Inc.
    Inventors: Donald R. Meyer, Arthur D. Sill
  • Patent number: 3933893
    Abstract: Novel bis basic esters of 9-substituted phenanthrene and related 9-oxa and 9-aza derivatives thereof, their preparation and use for the prevention and inhibition of viral infections are disclosed.
    Type: Grant
    Filed: September 13, 1974
    Date of Patent: January 20, 1976
    Assignee: Richardson-Merrell Inc.
    Inventors: Donald R. Meyer, Arthur D. Sill