Patents by Inventor Panolil Raveendranath

Panolil Raveendranath 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).

  • Publication number: 20040044234
    Abstract: This invention relates to a process for the preparation of 6-hydroxyequilenins, which are useful as estrogenic agents.
    Type: Application
    Filed: July 2, 2003
    Publication date: March 4, 2004
    Applicant: Wyeth
    Inventors: Sreenivasulu Megati, Galina Vid, Arthur G. Mohan, Panolil Raveendranath, John Potoski
  • Patent number: 6693207
    Abstract: This invention provides estrogenic agents having the formula wherein A and B are each, independently, R is SO3−X+; X+ is alkali metal, alkaline earth metal, ammonium, alkylammonium containing 1-6 carbon atoms, or dialkylammonium containing 1-6 carbon atoms in each alkyl group, or trialkylammonium containing 1-6 carbon atoms in each alkyl group; with the proviso that at least one of A or B is
    Type: Grant
    Filed: June 5, 2002
    Date of Patent: February 17, 2004
    Assignee: Wyeth
    Inventors: Michael Z. Kagan, Panolil Raveendranath, Syed M. Shah, Michael W. Winkley
  • Patent number: 6649779
    Abstract: This invention provides a pharmaceutically acceptable salt of 3&bgr;-hydroxy-5(10)-estrene-17-one 3-sulfate ester and a pharmaceutically acceptable salt of 3&agr;-hydroxy-5(10)-estrene-17-one 3-sulfate ester, which are useful as an estrogens.
    Type: Grant
    Filed: June 5, 2002
    Date of Patent: November 18, 2003
    Assignee: Wyeth
    Inventors: Michael Z. Kagan, Fangming Kong, Leonard A. McDonald, Panolil Raveendranath, Syed M. Shah, Joseph Zeldis
  • Publication number: 20030109513
    Abstract: This invention provides 3&bgr;-hydroxy-5,7,9-estratriene-17-one and a pharmaceutically acceptable salt of its 3-sulfate ester, which is useful as an estrogen.
    Type: Application
    Filed: January 21, 2003
    Publication date: June 12, 2003
    Applicant: Wyeth
    Inventors: Syed M. Shah, Panolil Raveendranath, Michael Z. Kagan
  • Patent number: 6525039
    Abstract: This invention provides 3&bgr;-hydroxy-5,7,9-estratriene-17-one and a pharmaceutically acceptable salt of its 3-sulfate ester, which is useful as an estrogen.
    Type: Grant
    Filed: April 21, 1998
    Date of Patent: February 25, 2003
    Assignee: Wyeth
    Inventors: Syed M. Shah, Panolil Raveendranath, Michael Z. Kagan
  • Publication number: 20020156060
    Abstract: This invention provides estrogenic agents having the formula 1
    Type: Application
    Filed: June 5, 2002
    Publication date: October 24, 2002
    Applicant: Wyeth
    Inventors: Michael Z. Kagan, Panolil Raveendranath, Syed M. Shah, Michael W. Winkley
  • Publication number: 20020151532
    Abstract: This invention provides a pharmaceutically acceptable salt of 3&bgr;-hydroxy-5(10)-estrene-17-one 3-sulfate ester and a pharmaceutically acceptable salt of 3&agr;-hydroxy-5(10)-estrene-17-one 3-sulfate ester, which are useful as an estrogens.
    Type: Application
    Filed: June 5, 2002
    Publication date: October 17, 2002
    Applicant: Wyeth
    Inventors: Michael Z. Kagan, Fangming Kong, Leonard A. McDonald, Panolil Raveendranath, Syed M. Shah, Joseph Zeldis
  • Patent number: 6458778
    Abstract: This invention provides estra-5(10),7-dien-3&bgr;-ol-17-one or a pharmaceutically acceptable salt of its 3-sulfate ester, estra-5(10),7-dien-3&bgr;-ol-17-one 3-glucuronide or a pharmaceutically acceptable salt thereof, estra-5(10),7-dien-3&agr;-ol-17-one or a pharmaceutically acceptable salt of its 3-sulfate ester, estra-5(10),7-dien-3&bgr;-ol-17-one 3-glucuronide or a pharmaceutically acceptable salt thereof, estra-5(10),7-dien-3&bgr;-ol-17-one 3-alkali metal salt, and estra-5(10),7-dien-3&agr;-ol-17-one 3-alkali metal salt which are useful as estrogenic agents.
    Type: Grant
    Filed: March 27, 1998
    Date of Patent: October 1, 2002
    Assignee: Wyeth
    Inventors: Fangming Kong, Leonard A. McDonald, Michael Z. Kagan, Syed M. Shah, Panolil Raveendranath, Mark A. Collins
  • Publication number: 20020062022
    Abstract: This invention provides processes for synthesizing compounds of formula I: 1
    Type: Application
    Filed: November 2, 2001
    Publication date: May 23, 2002
    Applicant: American Home Products Corporation
    Inventors: Annmarie L. Sabb, Robert L. Vogel, Madelene M. Antane, Panolil Raveendranath, Sreenivasulu Megati, Michael D. Smith, James A. Nelson
  • Patent number: 6268504
    Abstract: The present invention provides compounds useful in the synthesis of biologically active compounds, and processes for their production, the compounds having the formula: wherein: R1 and R2 are, independently, selected from H; C1-C12 alkyl or C1-C6 perfluorinated alkyl; X represents a leaving group; A is O or S; m is an integer from 1 to 3, preferably 2; R3, R4, R5, and R6 are independently selected from H, halogen, —NO2, alkyl, alkoxy, C1-C6 perfluorinated alkyl, OH or the C1-C4 esters or alkyl ethers thereof, —CN, —O—R1, —O—Ar, —S—R1, —S—Ar, —SO—R1, —SO—Ar, —SO2—R1, —SO2—Ar, —CO—R1, —CO—Ar, —CO2—R1, or —CO2—Ar; and Y is selected from a) the moiety: wherein R7 and R8 are independently selected from the group of H, C1-C6 alkyl, or phenyl; or b) an optionally substituted five-, six- or seven-membered saturated, unsaturated
    Type: Grant
    Filed: December 10, 1999
    Date of Patent: July 31, 2001
    Assignee: American Home Products Corporation
    Inventors: Panolil Raveendranath, Joseph Zeldis, Galina Vid, John R. Potoski, Jianxin Ren, Silvio Iera
  • Patent number: 6242605
    Abstract: The present invention provides compounds useful in the synthesis of biologically active compounds, and processes for their production, the compounds having the formula: wherein: R1 and R2 are, independently, selected from H; C1-C12 alkyl or C1-C6 perfluorinated alkyl; X represents a leaving group; A is 0 or S; m is an integer from 1 to 3, preferably 2; R3, R4, R5, and R6 are independently selected from H, halogen, —NO2, alkyl, alkoxy, C1-C6 perfluorinated alkyl, OH or the C1-C4 esters or alkyl ethers thereof, —CN, —O—R1, —O—Ar, —S—R1, —S—Ar, —SO—R1, —SO—Ar, —SO2—R1, —SO2—Ar, —CO—R1, —CO—Ar, —CO2—R1, or —CO2—Ar; and Y is selected from a) the moiety: wherein R7 and R8 are independently selected from the group of H, C1-C6 alkyl, or phenyl; or b) an optionally substituted five-, six- or seven-membered saturated, unsaturated
    Type: Grant
    Filed: December 10, 1999
    Date of Patent: June 5, 2001
    Assignee: American Home Products Corporation
    Inventors: Panolil Raveendranath, Joseph Zeldis, Galina Vid, John R. Potoski, Jianxin Ren, Silvio Iera
  • Patent number: 6005102
    Abstract: The present invention provides compounds useful in the synthesis of biologically active compounds, and processes for their production, the compounds having the formula: ##STR1## wherein: R.sup.1 and R.sup.2 are, independently, selected from H; C.sub.1 -C.sub.12 alkyl or C.sub.1 -C.sub.6 perfluorinated alkyl; X represents a leaving group; A is O or S; m is an integer from 1 to 3, preferably 2; R.sup.3, R.sup.4, R.sup.5, and R.sup.6 are independently selected from H, halogen, --NO.sub.2, alkyl, alkoxy, C.sub.1 -C.sub.6 perfluorinated alkyl, OH or the C.sub.1 -C.sub.4 esters or alkyl ethers thereof, --CN, --O--R.sup.1, --O--Ar, --S--R.sup.1, --S--Ar, --SO--R.sup.1, --SO--Ar, --SO.sub.2 --R.sup.1, --SO.sub.2 --Ar, --CO--R.sup.1, --CO--Ar, --CO.sub.2 --R.sup.1, or --CO.sub.2 --Ar; and Y is selected from a) the moiety: ##STR2## wherein R.sub.7 and R.sub.8 are independently selected from the group of H, C.sub.1 -C.sub.
    Type: Grant
    Filed: September 28, 1998
    Date of Patent: December 21, 1999
    Assignee: American Home Products Corporation
    Inventors: Panolil Raveendranath, Joseph Zeldis, Galina Vid, John R. Potoski, Jianxin Ren, Silvio Iera