The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 25, 2002
Filed:
Feb. 07, 2000
Tadakatsu Mandai, Kurashiki-shi, Okayama-ken, JP;
Hiroshi Okumoto, Okayama-ken, JP;
Katsuyoshi Nakanishi, Yokohama, JP;
Koji Hara, Yokohama, JP;
Katsuhiko Mikuni, Yokohama, JP;
Kozo Hara, Yokohama, JP;
Other;
Abstract
The object of the invention is to develop baccatin derivatives useful for preparing taxoid compounds such as paclitaxel and a process for the producing the same. The invention provides baccatin derivatives represented by the general formula (I) as well as a process for producing baccatin derivatives represented by the general formula (I) above, which comprises allowing a baccatin represented by the general formula (II) to react with a &bgr;-ketoester in the absence of a catalyst or in the presence of a tin compound or an amine base, preferably under reduced pressure.