z-logo
Premium
1,4‐Cycloaddition reactions. III. Synthesis of furo[3,2‐ c ]pyrido[2,3‐ g ]quinolines, Furo[2,3‐ a ] [4,7]phenanthrolines, Furo[3,2‐ c ]pyrrolo[2,3‐ g ]quinolines, Furo[3,2‐ c ]pyrrolo[3,2‐ g ]quinolines, and Furo[3,2‐ c ]furo[2′,3′:4,5]pyrido[2,3‐ g ]quinolines from 2,3‐dihydro‐5‐methylfuran and schiff bases
Author(s) -
Perricone S. C.,
Worth Donald F.,
Elslager Edward F.
Publication year - 1970
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.5570070311
Subject(s) - chemistry , quinoline , stereochemistry , epimer , indoline , cycloaddition , isoquinoline , boron trifluoride , medicinal chemistry , organic chemistry , catalysis
The 1,4‐cycloaddition of 2,3‐dihydro‐5‐methylfuran (II) to 1‐acetyl‐1,2,3,4‐te trahydro‐6‐[( p ‐hydroxybenzylidene)amino]quinoline (VIII) in the presence of boron trifluoride gave two pairs of epimers, namely dl ‐10‐acetyl‐2,3,3a,4,5,7,8,9,10,11b‐decahydro‐4‐( p ‐hydroxyphenyl)‐11b‐methylfuro[3,2‐ c ]pyrido[2,3‐ g ]quinoline (IXa and b) and dl ‐8‐acetyl‐2,3,3a,4,5,8,9,10,11,‐11c‐decahydro‐4‐( p ‐hydroxyphenyl)‐11c‐methylfuro[2,3‐ a ][4,7]phenanthroline (Xa and b). dl ‐9‐Acetyl‐3,3a,4,5,7,8,9,10b‐octahydro‐4‐( p ‐hydroxyphenyl)‐10b‐methyl‐2 H ‐furo[3,2‐ c ] pyrrolo‐[2,3‐ g ]quinoline (XIIIa) was the predominant product isolated from the reaction of II with 1‐acetyl‐5‐[ p ‐(hydroxybenzylidene)amino]indoline (XII). When 1‐acetyl‐6‐[( p ‐hydroxybenzylidene)amino]indoline (XVI) was treated with 2,3‐dihydro‐5‐methylfuran (II), two epimers of dl ‐7‐acetyl‐3,3a,4,5,7,8,9,10b‐octahydro‐4‐( p ‐hydroxyphenyl)‐10b‐methyl‐2 H ‐furo[3,2‐ c ]pyrrolo[3,2‐ g ]quinoline (XVIIa and b) were obtained. dl ‐2,3,3a,4,5,6b,8,9,9a,10,11,12b‐Dodecahydro‐4,10‐bis( p ‐methoxyphenyl)‐6b,12b‐dimethylfuro[3,2‐ c ]furo[2′,3′:4,5]pyrido[2,3‐ g ]quinoline (XX) was formed when 2,3‐dihydro‐5‐methylfuran was allowed to react with N,N' ‐bis( p ‐methoxybenzylidene)‐ p ‐phenylcnediamine (XIX). Structure assignments were made from NMR spectra. None of the compounds exhibited appreciable biological activity.

This content is not available in your region!

Continue researching here.

Having issues? You can contact us here