logo

For the Inventor, By the Inventor

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.:

US 4966971 B1

PDFFull Text
Date of Patent:
Oct. 30, 1990

Filed:

Nov. 14, 1988

Method for preparing 1-chloro-5-alkylisoquinolines condensed with

Applicant:
Inventors:

Emile R Bisagni, Orsay, FR;

Marilys Greletepouse Rautureau, Palaiseau, FR;

Assignee:

Centre National de la Recherche Scientifique (C.N.R.S.), Paris, FR;

Attorney:

Bierman and Muserlian

Primary Examiner:

Mukund J Sham

Assistant Examiner:

E C Ward

Int. Cl.
CPC ...
C07D / ; C07D / ; C07D / ; C07D / ;
U.S. Cl.
CPC ...
546 64 ; 546 70 ; 546 77 ; 546 79 ; 546 80 ; 546101 ;
Abstract

To prepare the compound (I), a lithiation of the compound (II) is performed, an aldehyde (IV) is reacted with the compound (III) formed, leading to the secondary alcohol (V) which is subjected to a reduction leading to the compound (VI), which is then subjected to a hydrolysis (of the dioxolane group)/cyclization/dehydration reaction. The procedure may be followed by a nucleophilic substitution reaction of the chlorine. The compounds (a) below exhibit antitumor activity. ##STR1## R=C.sub.1 -C.sub.3 alkyl; Ar=aromatic or polycyclic aromatic group; R.sub.1 and r.sub.2 =H or C.sub.1 -C.sub.3 alkyl; and n=2 to 4. No drawing.

Find Patent Forward Citations

Bisagni, Emile. (1990). Method for preparing 1-chloro-5-alkylisoquinolines condensed with (U.S. Patent No. 4966971). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4966971

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…