BioPharmaceutical Business Intelligence

  • Uncover prior art in expired and abandoned patents
  • Obtain formulation and manufacturing information
  • Drug patents in 130+ countries

Upgrade to enjoy subscriber-only features like email alerts and data export. See the Plans and Pricing

Serving leading biopharmaceutical companies globally:

Fish and Richardson
Cantor Fitzgerald
Argus Health
Chinese Patent Office

Generated: December 15, 2017

DrugPatentWatch Database Preview

Details for Patent: ► Subscribe

« Back to Dashboard

Details for Patent: ► Subscribe

Title: Optically active pyridobenzoxazine derivatives and intermediates thereof
Abstract:An optically action pyridobenzoxazine derivative, a process for preparing the same and a novel intermediate useful for preparing the optically active pyridobenzoxazine derivative are disclosed. The optically active pyridobenzoxazine derivative possesses increased antimicrobial activity and reduced toxicity. The intermediate is useful for preparing such optically active pyridobenzoxazine derivatives such as Ofloxacin and anolog compounds.
Inventor(s): Hayakawa; Isao (Tokyo, JP), Atarashi; Shohgo (Tokyo, JP), Imamura; Masazumi (Tokyo, JP), Yokohama; Shuichi (Tokyo, JP), Higashihashi; Nobuyuki (Tokyo, JP), Sakano; Katsuichi (Tokyo, JP), Ohshima; Masayuki (Tokyo, JP)
Assignee: Daiichi Pharmaceutical Co., Ltd. (Tokyo, JP)
Filing Date:Aug 28, 1991
Application Number:07/754,198
Claims:1. An S(-)-optically pure 4-substituted benzoxazine derivative represented by the formula (X) ##STR9## wherein X.sub.1 and X.sub.2, which may be the same or different, each represents a halogen atom, R.sub.1 represents an alkyl group having 1 to 4 carbon atoms, and Q represents a hydrogen atom.
« Back to Dashboard

For more information try a trial or see the plans and pricing

Serving leading biopharmaceutical companies globally:

Queensland Health
Fish and Richardson
Chinese Patent Office
US Army

Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. thinkBiotech performs no independent verifification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.

Copyright 2002-2017 thinkBiotech LLC
ISSN: 2162-2639

Secure SSL Encrypted
Privacy and Cookies
Terms & Conditions

Follow DrugPatentWatch: