Patents Assigned to POLYMED THERAPEUTICS, INC.
  • Publication number: 20090076261
    Abstract: A process for preparing a sucrose-6-ester, a key intermediate to sucralose. The process contains (a) reacting sucrose with a di(hydrocarbyl)tin oxide or a 1,3-diacyloxy-1,1,3,3-tetra(hydrocarbyl)distannoxane in the presence of a secondary alcohol and an organic polar aprotic solvent, to prepare a mixture comprising 1,3-di-(6-O-sucrose)-1,1,3,3-tetra(hydrocarbyl)distannoxane and the secondary alcohol; and (b) adding an acylating agent to the mixture, thereby acylating the 1,3-di-(6-O-sucrose)-1,1,3,3-tetra(hydrocarbyl)distannoxane to prepare a sucrose-6-ester.
    Type: Application
    Filed: September 13, 2007
    Publication date: March 19, 2009
    Applicant: POLYMED THERAPEUTICS, INC.
    Inventor: Shaojun Xu
  • Publication number: 20080300401
    Abstract: A process for preparing a sucralose-6-ester, a key intermediate to sucralose. The process contains (a) creating a heterogeneous mixture comprising a first phase comprising a sucrose-6-ester and a second phase comprising a chlorinating reagent; and (b) reacting the sucrose-6-ester with the chlorinating reagent, to prepare a sucralose-6-ester. In addition, processes for preparing sucralose are provided.
    Type: Application
    Filed: January 2, 2008
    Publication date: December 4, 2008
    Applicant: POLYMED THERAPEUTICS, INC.
    Inventor: Shaojun Xu
  • Publication number: 20080300392
    Abstract: A process for preparing a sucralose-6-ester, a key intermediate to sucralose. The process contains (a) creating a heterogeneous mixture comprising a first phase comprising a sucrose-6-ester and a second phase comprising a chlorinating reagent; and (b) reacting the sucrose-6-ester with the chlorinating reagent, to prepare a sucralose-6-ester. In addition, processes for preparing sucralose from sucrose-6-esters are provided.
    Type: Application
    Filed: June 4, 2007
    Publication date: December 4, 2008
    Applicant: POLYMED THERAPEUTICS, INC.
    Inventor: Shaojun Xu