Azaanthracene-triones of the formula: ##STR1## (in which: R.sup.1, R.sup.2, R.sup.4 and R.sup.5 are the same or are different and each is a hydrogen atom or a lower alkyl group; R.sup.3 is a hydrogen atom, a lower alkyl group, a phenyl group or an amino-substituted phenyl group; and X is a --CH--, .dbd.N-- or --NH--, whereby the ring containing the group X is a benzene, pyridine or dihydropyridene ring) have antitumoral activity.
Azaanthracene-triones of the formula:
(in which: R¹, R², R⁴ and R⁵ are the same or are different and each is a hydrogen atom or a lower alkyl group;
R³ is a hydrogen atom, a lower alkyl group, a phenyl group or an amino-substituted phenyl gro up; and
X is a -CH-, =N- or -NH-, whereby the ring containing the group X is a benzene, pyridine or dihydropyridene ring)
have antitumoral activity.
Ultrasound assisted Diels-Alder reactions of 1-azadienes with “normal” electronic demand.
作者:Mercedes Villacampa、Jose' María Pérez、Carmen Avendaño、J.Carlos Menéndez
DOI:10.1016/s0040-4020(01)89620-4
日期:1994.1
irradiation accelerates hetero Diels-Alderreactions between 1-dimethylamino-1-azadienes and electron-defficient dienophiles. Besides the lower reaction times and increased yields, other advantages of the sonicated reactions are the possibility of isolating previously unknown adducts due to the milder reaction conditions and, in some cases, the decrease in side reactions.