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:
Nov. 09, 1999
Filed:
Apr. 27, 1998
Applicant:
Inventors:
Assignee:
Kuraray Co., Ltd., Kurashiki, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
568875 ; 568700 ; 568714 ; 568865 ; 514724 ; 514739 ;
Abstract
A process for the preparation of a polyprenol represented by formula (1): ##STR1## where Y and Z individually represent a hydrogen atom or are coupled together to form a carbon-carbon bond; R represents a hydrogen atom or a protective group for a hydroxyl group, and n is 0 or an integer not less than 1, by reacting an organic complex of an alkali metal with a compound represented by formula (2): ##STR2## where either V represents a halogen atom, while W and X are coupled together to form a carbon-carbon bond, or X represents a halogen atom, while V and W are coupled together to form a carbon-carbon bond; A represents a protective group for a hydroxyl group, and Y, Z and n are as defined above.