Various azaazulene derivatives were synthesized and their antiallergic activity was examined. The structure-activity relationship among various derivatives modified by introducing substituents at the 1-,2-, or 3-position of the azaazulene ring was investigated. The inhibitory activities on allergic histamine release of the compounds bearing a 5-tetrazolyl group at the 3-position were more potent than
Direct synthesis of 2-substituted furotropones from tropolones utilizing alkynyl(phenyl)iodonium salts
作者:Toshifusa Shu、Da-Wei Chen、Masahito Ochiai
DOI:10.1016/0040-4039(96)01150-1
日期:1996.7
Reaction of alkynyl(phenyl)iodonium tetrafluoroborates with tropolones in the presence of a base undergoes tandem O-Michael-carbene insertions and provides a useful route for the direct synthesis of 2-substituted furotropones from tropolones.
Bistropolone derivatives (4-12) containing differing lengths of linkage between the two tropolone rings were prepared and examined for their antitumor activity in in vitro (KB cell) and in vivo (leukemia P388 in mice) systems. Parent compound 3, related compounds previously prepared, and the new compounds 4-12 were evaluated for inhibitory activity against ribonucleotide reductase by indirect means
Azulene derivatives and pharmaceutical compositions containing them
申请人:Ajinomoto Company, Inc.
公开号:US04912134A1
公开(公告)日:1990-03-27
Azulene derivatives of the following formula ##STR1## wherein R.sup.1 stands for an alkyl group of 1 to 3 carbon atoms, R.sup.2 stands for an alkyl group of 1 to 3 carbon atoms, and R.sup.3 is at the 5- or 6-position and stands for an alkyl group of 1 to 6 carbon atoms, an aryl group of 6 to 9 carbon atoms or an aralkyl group of 7 to 10 carbon atoms; have antihyperlipidemic activity. Many of the compounds are also novel per se.