The invention relates to novel 5,6,7,8-tetrahydroquinoline derivatives which have a group X situated at the 8-position said group X is CONHR.sup.3, or CO.sub.2 R.sup.5 wherein R.sup.3 is hydrogen lower alkyl and R.sup.5 is hydrogen, lower alkyl or a lower aralkyl radical. The compounds are intermediates for corresponding compounds where X is CSNHR.sup.3 and these are anti-ulcer agents.
The invention relates to novel 8-cyano-5,6,7,8-tetrahydroquinoline derivatives which are intermediates for the preparation of corresponding 8-thioamides. Some of the 8-cyano compounds are anti-ulcer agents.
The invention relates to pharmaceutical compositions containing 5,6,7,8-tetrahydroquinoline-8-thioamides and nitriles and related tricyclic compounds and methods of treating ulcers using said compounds.
Double decarboxylative Claisen rearrangement reactions: microwave-assisted de novo synthesis of pyridines
作者:Donald Craig、Federica Paina、Stephen C. Smith
DOI:10.1039/b805078c
日期:——
Microwave-assisted double decarboxylative Claisen rearrangement of bis(allyl) 2-tosylmalonates provides substituted 1,6-heptadienes, which may be alkylated, and then converted into pyridines by ozonolysis followed by reaction with ammonia generated in situ under microwave conditions.
Cross Mannich Reaction of Aldehydes; Efficient Synthesis of Substituted Pyridines
作者:Nikolaus Risch、Andreas Winter
DOI:10.1055/s-2003-42435
日期:——
Symmetrically and unsymmetrically substitutedpyridines were obtained in highly efficient one-pot procedures starting from α-unbranched aldehydes and iminium salts.