Patents by Inventor Xingzhong Zeng

Xingzhong Zeng 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).

  • CYCLOPROPYL ALKYL AMINES AND PROCESS FOR THEIR PREPARATION
    Publication number: 20200031753
    Abstract: The present invention relates to a process of making a compound of formula (I). Wherein, R is as defined herein.
    Type: Application
    Filed: March 28, 2018
    Publication date: January 30, 2020
    Inventors: Zhengxu HAN, Maurice A. MARSINI, Hao WU, Xingzhong ZENG
  • Methods for making oxetan-3-ylmethanamines
    Patent number: 9376409
    Abstract: This invention relates to methods for making oxetan-3-ylmethanamines having the formula (I) wherein R1? and R2? are as defined herein. The methods of the invention provide the compounds of formula (I) in high yields and under conditions amenable for large-scale commercial production.
    Type: Grant
    Filed: May 1, 2013
    Date of Patent: June 28, 2016
    Assignee: BOEHRINGER INGELHEIM INTERNATIONAL GMBH
    Inventors: Magnus Carl Arne Eriksson, Suresh R. Kapadia, Jonathan Timothy Reeves, Xingzhong Zeng
  • Process for preparing carboxylic acids
    Patent number: 9199904
    Abstract: The present invention relates to a process of making a compound of formula (XII) or (XIIA): wherein R1,R2, R4 and X are as defined herein.
    Type: Grant
    Filed: March 15, 2012
    Date of Patent: December 1, 2015
    Assignee: BOEHRINGER INGELHEIM INTERNATIONAL GMBH
    Inventors: Jean-Nicolas Desrosiers, Joe Ju Gao, Jason Alan Mulder, Jinhua J. Song, Xingzhong Zeng
  • HEXAHYDROINDENOPYRIDINE DERIVATIVES
    Publication number: 20150141651
    Abstract: This application relates methods of making compounds A and B: Compounds A and B are useful as intermediates for the preparation of pharmaceutically active compounds such as 11-?-hydroxysteroid hydrogenase type 1 (11-?-HSD1) inhibitors.
    Type: Application
    Filed: November 19, 2014
    Publication date: May 21, 2015
    Inventors: Jean-Nicolas DESROSIERS, Zhibin LI, Bo QU, Jolaine SAVOIE, Chris Hugh SENANAYAKE, Xudong WEI, Xingzhong ZENG
  • Process for preparing carboxamidine compounds
    Patent number: 9029592
    Abstract: The present invention relates to a process of making a compound of formula (I): Wherein, R1, R2, R4 and X are as defined herein.
    Type: Grant
    Filed: February 7, 2013
    Date of Patent: May 12, 2015
    Assignee: Boehringer Ingelheim International GmbH
    Inventors: Keith R. Fandrick, Joe Ju Gao, Jason Alan Mulder, Nitinchandra D. Patel, Xingzhong Zeng
  • METHODS FOR MAKING OXETAN-3-YLMETHANAMINES
    Publication number: 20150119589
    Abstract: This invention relates to methods for making oxetan-3-ylmethanamines having the formula (I) wherein R1? and R2? are as defined herein. The methods of the invention provide the compounds of formula (I) in high yields and under conditions amenable for large-scale commercial production.
    Type: Application
    Filed: May 1, 2013
    Publication date: April 30, 2015
    Inventors: Magnus Carl Arne Eriksson, Suresh R. Kapadia, Jonathan Timothy Reeves, Xingzhong Zeng
  • PROCESS FOR PREPARING CARBOXYLIC ACIDS
    Publication number: 20150038731
    Abstract: The present invention relates to a process of making a compound of formula (XII) or (XIIA): wherein R1, R2, R4 and X are as defined herein.
    Type: Application
    Filed: March 15, 2012
    Publication date: February 5, 2015
    Applicant: BOEHRINGER INGELHEIM INTERNATIONAL GMBH
    Inventors: Jean-Nicolas Desrosiers, Joe Ju Gao, Jason Alan Mulder, Jinhua J. Song, Xingzhong Zeng
  • PROCESS FOR PREPARATION OF SUBSTITUTED P-AMINOPHENOL
    Publication number: 20130310597
    Abstract: The present invention is related to a process of preparing substituted p-aminophenol compound of formula (I) or a salt thereof,
    Type: Application
    Filed: July 23, 2013
    Publication date: November 21, 2013
    Applicant: BOEHRINGER INGELHEIM INTERNATIONAL GMBH
    Inventors: Carl Alan BUSACCA, Magnus C. ERIKSSON, Jinghua XU, Xingzhong Zeng
  • Process for preparation of substituted P-aminophenol
    Patent number: 8519176
    Abstract: The present invention is related to a process of preparing substituted p-aminophenol compound of formula (I) or a salt thereof,
    Type: Grant
    Filed: October 1, 2010
    Date of Patent: August 27, 2013
    Assignee: Boehringer Ingelheim International GmbH
    Inventors: Carl A. Busacca, Magnus C. Eriksson, Jinghua Xu, Xingzhong Zeng
  • PROCESS FOR PREPARING CARBOXAMIDINE COMPOUNDS
    Publication number: 20130211130
    Abstract: The present invention relates to a process of making a compound of formula (I): Wherein, R1, R2, R4 and X are as defined herein.
    Type: Application
    Filed: February 7, 2013
    Publication date: August 15, 2013
    Applicant: Boehringer Ingelheim International Gmbh
    Inventors: Keith R. FANDRICK, Joe Ju GAO, Jason Alan MULDER, Nitinchandra D. PATEL, Xingzhong ZENG
  • METHOD FOR PREPARING MACROCYCLES
    Publication number: 20110263844
    Abstract: The present invention is directed to a method for the preparation of macrocyclic compounds of formula (I), comprising the step of cyclizing a diene of formula (II), in the presence of a catalyst, wherein R1-R6, A, W and V are as defined herein. The present invention is also directed to intermediate compounds of formula II.
    Type: Application
    Filed: May 5, 2009
    Publication date: October 27, 2011
    Applicant: BOEHRINGER INGELHEIM INTERNATIONAL GMBH
    Inventors: Chutian Shu, Chris Hugh Senanayake, Zhulin Tan, Nathan Yee, Xingzhong Zeng