Patents by Inventor Sie-Rong Li

Sie-Rong Li 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).

  • Method for preparing a coumarin compound, chromene compound, and method for preparing a chromene compound
    Patent number: 8383843
    Abstract: Disclosed herein is a method for preparing a coumarin compound of formula (F), in which R1, R2, and R3 are independently H, C1˜C7 alkoxy, C1˜C7 alkyl, phenoxy, benzyloxy, or a halogen atom; R4 is an alkyl group; and Ar is an optionally substituted aryl group, the method including: treating a chromene compound having the following formula (E) with an acid in the presence of water. A chromene compound of formula (E) and a method for preparing the chromene compound of formula (E) are also disclosed.
    Type: Grant
    Filed: October 11, 2010
    Date of Patent: February 26, 2013
    Assignee: Kaohsiung Medical University
    Inventors: Eng-Chi Wang, Jui-Chi Tsai, Sie-Rong Li, Po-Yuan Chen
  • METHOD FOR PREPARING A COUMARIN COMPOUND, CHROMENE COMPOUND, AND METHOD FOR PREPARING A CHROMENE COMPOUND
    Publication number: 20120088923
    Abstract: Disclosed herein is a method for preparing a coumarin compound of formula (F), in which R1, R2, and R3 are independently H, C1˜C7 alkoxy, C1˜C7 alkyl, phenoxy, benzyloxy, or a halogen atom; R4 is an alkyl group; and Ar is an optionally substituted aryl group, the method including: treating a chromene compound having the following formula (E) with an acid in the presence of water. A chromene compound of formula (E) and a method for preparing the chromene compound of formula (E) are also disclosed.
    Type: Application
    Filed: October 11, 2010
    Publication date: April 12, 2012
    Applicant: KAOHSIUNG MEDICAL UNIVERSITY
    Inventors: Eng-Chi Wang, Jui-Chi Tsai, Sie-Rong Li, Po-Yuan Chen
  • Intermediate compounds and processes for the preparation of 7-benzyloxy-3-(4-methoxyphenyl)-2H-1-benzopyran
    Patent number: 7875736
    Abstract: Disclosed herein is a compound of formula (I): wherein: Bn represents benzyl; Me represents methyl; and Y represents an oxygen atom or a CH2 group. The compound of formula (I) can be used in the preparation of 7-benzyloxy-3-(4-methoxyphenyl)-2H-1-benzopyran, Preparation processes of said compound of formula (I) are also disclosed herein.
    Type: Grant
    Filed: May 19, 2009
    Date of Patent: January 25, 2011
    Assignee: KaoHsiung Medical University
    Inventors: Eng-Chi Wang, Sie-Rong Li
  • Processes for preparing isoflavonoids using 7-benzyloxy-3-(4-methoxyphenyl)-2H-1-benzopyran as a starting material
    Patent number: 7875735
    Abstract: Disclosed herein are processes for the preparation of isoflavonoids, in particular haginin E, equol, daidzein, formononetin and the like, in which 7-benzyloxy-3-(4-methoxyphenyl)-2H-1-benzopyran is used as a common starting material.
    Type: Grant
    Filed: May 19, 2009
    Date of Patent: January 25, 2011
    Assignee: KaoHsiung Medical University
    Inventors: Eng-Chi Wang, Sie-Rong Li
  • Intermediate Compounds and Processes for the Preparation of 7-benzyloxy-3-(4-methoxyphenyl)-2H-1-benzopyran
    Publication number: 20100298582
    Abstract: Disclosed herein is a compound of formula (I): wherein: Bn represents benzyl; Me represents methyl; and Y represents an oxygen atom or a CH2 group. The compound of formula (I) can be used in the preparation of 7-benzyloxy-3-(4-methoxyphenyl)-2H-1-benzopyran, Preparation processes of said compound of formula (I) are also disclosed herein.
    Type: Application
    Filed: May 19, 2009
    Publication date: November 25, 2010
    Applicant: KaoHsiung Medical University
    Inventors: Eng-Chi Wang, Sie-Rong Li
  • Processes for Preparing Isoflavonoids using 7-benzyloxy-3-(4-methoxyphenyl)-2H-1-benzopyran as a Starting Material
    Publication number: 20100298581
    Abstract: Disclosed herein are processes for the preparation of isoflavonoids, in particular haginin E, equol, daidzein, formononetin and the like, in which 7-benzyloxy-3-(4-methoxyphenyl)-2H-1-benzopyran is used as a common starting material.
    Type: Application
    Filed: May 19, 2009
    Publication date: November 25, 2010
    Applicant: KaoHsiung Medical University
    Inventors: Eng-Chi Wang, Sie-Rong Li