Patents by Inventor Erwin Rannala

Erwin Rannala 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).

  • Protected diols for prostaglandin synthesis
    Patent number: 7161042
    Abstract: A process for the preparation of prostaglandin compounds having the formula (I): wherein A is selected from the group consisting of C1–C6 alkyl groups; C7–C16 aralkyl groups wherein an aryl portion thereof is unsubstituted or substituted with one to three substituents selected from the group consisting of C1–C6 alkyl groups, halo and CF3; and (CH2)nOR? wherein n is an integer from 1 to 3 and R? represents a C6–C10 aryl group which is unsubstituted or substituted with one to three substituents selected from the group consisting of C1–C6 alkyl groups, halo and CF3; B is selected from OR? and NHR? wherein R? is C1–C6 alkyl groups; and represents a double bond or a single bond, is disclosed. Novel intermediates are also disclosed.
    Type: Grant
    Filed: January 9, 2006
    Date of Patent: January 9, 2007
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Derek Wyndham Clissold, Stuart Wilbert Craig, Rajendrakumar Reddy Gadikota, Min He, Jurjus Fayez Jurayj, Shahrokh Kazerani, Erwin Rannala, Pradeep Kumar Sharma
  • Protected and unprotected triols for prostaglandin synthesis
    Patent number: 7141706
    Abstract: A process for the preparation of prostaglandin compounds having the formula (I): wherein A is selected from the group consisting of C1–C6 alkyl groups; C7–C16 aralkyl groups wherein an aryl portion thereof is unsubstituted or substituted with one to three substituents selected from the group consisting of C1–C6 alkyl groups, halo and CF3; and (CH2)nOR? wherein n is an integer from 1 to 3 and R? represents a C6–C10 aryl group which is unsubstituted or substituted with one to three substituents selected from the group consisting of C1–C6 alkyl groups, halo and CF3; B is selected from OR? and NHR? wherein R? is C1–C6 alkyl groups; and represents a double bond or a single bond, is disclosed. Novel intermediates are also disclosed.
    Type: Grant
    Filed: January 9, 2006
    Date of Patent: November 28, 2006
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Derek Wyndham Clissold, Stuart Wilbert Craig, Rajendrakumar Reddy Gadikota, Min He, Jurjus Fayez Jurayj, Shahrokh Kazerani, Erwin Rannala, Pradeep Kumar Sharma
  • Prostaglandin synthesis
    Patent number: 7109371
    Abstract: A process for the preparation of prostaglandin compounds having the formula (I): wherein A is selected from the group consisting of C1–C6 alkyl groups; C7–C16 aralkyl groups wherein an aryl portion thereof is unsubstituted or substituted with one to three substituents selected from the group consisting of C1–C6 alkyl groups, halo and CF3; and (CH2)nOR? wherein n is an integer from 1 to 3 and R? represents a C6–C10 aryl group which is unsubstituted or substituted with one to three substituents selected from the group consisting of C1–C6 alkyl groups, halo and CF3; B is selected from OR? and NHR? wherein R? is C1–C6 alkyl groups; and represents a double bond or a single bond, is disclosed. Novel intermediates are also disclosed.
    Type: Grant
    Filed: January 5, 2004
    Date of Patent: September 19, 2006
    Assignee: Johnson Matthey Public Limited Company
    Inventors: Derek Wyndham Clissold, Stuart Wilbert Craig, Rajendrakumar Reddy Gadikota, Min He, Jurjus Fayez Jurayj, Shahrokh Kazerani, Erwin Rannala, Pradeep Kumar Sharma
  • Protected diols for prostaglandin synthesis
    Publication number: 20060106235
    Abstract: A process for the preparation of prostaglandin compounds having the formula (I): wherein A is selected from the group consisting of C1-C6 alkyl groups; C7-C16 aralkyl groups wherein an aryl portion thereof is unsubstituted or substituted with one to three substituents selected from the group consisting of C1-C6 alkyl groups, halo and CF3; and (CH2)nOR? wherein n is an integer from 1 to 3 and R? represents a C6-C10 aryl group which is unsubstituted or substituted with one to three substituents selected from the group consisting of C1-C6 alkyl groups, halo and CF3; B is selected from OR? and NHR? wherein R? is C1-C6 alkyl groups; and represents a double bond or a single bond, is disclosed. Novel intermediates are also disclosed.
    Type: Application
    Filed: January 9, 2006
    Publication date: May 18, 2006
    Inventors: Derek Clissold, Stuart Craig, Rajendrakumar Gadikota, Min He, Jurjus Jurayj, Shahrokh Kazerani, Erwin Rannala, Pradeep Sharma
  • Protected and unprotected triols for prostaglandin synthesis
    Publication number: 20060106236
    Abstract: A process for the preparation of prostaglandin compounds having the formula (I): wherein A is selected from the group consisting of C1-C6 alkyl groups; C7-C16 aralkyl groups wherein an aryl portion thereof is unsubstituted or substituted with one to three substituents selected from the group consisting of C1-C6 alkyl groups, halo and CF3; and (CH2)nOR? wherein n is an integer from 1 to 3 and R? represents a C6-C10 aryl group which is unsubstituted or substituted with one to three substituents selected from the group consisting of C1-C6 alkyl groups, halo and CF3; B is selected from OR? and NHR? wherein R? is C1-C6 alkyl groups; and represents a double bond or a single bond, is disclosed. Novel intermediates are also disclosed.
    Type: Application
    Filed: January 9, 2006
    Publication date: May 18, 2006
    Inventors: Derek Clissold, Stuart Craig, Rajendrakumar Gadikota, Min He, Jurjus Jurayj, Shahrokh Kazerani, Erwin Rannala, Pradeep Sharma
  • Prostaglandin synthesis
    Publication number: 20050154220
    Abstract: A process for the preparation of prostaglandin compounds having the formula (I): wherein A is selected from the group consisting of C1-C6 alkyl groups; C7-C16 aralkyl groups wherein an aryl portion thereof is unsubstituted or substituted with one to three substituents selected from the group consisting of C1-C6 alkyl groups, halo and CF3; and (CH2)nOR? wherein n is an integer from 1 to 3 and R? represents a C6-C10 aryl group which is unsubstituted or substituted with one to three substituents selected from the group consisting of C1-C6 alkyl groups, halo and CF3; B is selected from OR? and NHR? wherein R? is C1-C6 alkyl groups; and represents a double bond or a single bond, is disclosed. Novel intermediates are also disclosed.
    Type: Application
    Filed: January 5, 2004
    Publication date: July 14, 2005
    Inventors: Derek Clissold, Stuart Craig, Rajendrakumar Gadikota, Min He, Jurjus Jurayj, Shahrokh Kazerani, Erwin Rannala, Pradeep Sharma