98123-83-2Relevant articles and documents
A palladium-catalyzed intramolecular Heck/Hydrogenation approach towards the synthesis of praziquantel
Williams, Alfred L.,St. Hilaire, Valentine R.
, p. 6712 - 6717 (2017/10/25)
Starting from 3-methoxy N-acylpyrazinium salts, a new approach towards the synthesis of the antischistosomal drug praziquantel (PZQ) has been developed. Utilization of a palladium-catalyzed intramolecular Heck reaction to form dehydro-PZQ followed by a Hydrogenation step, in a stepwise or one-pot manner, allowed for the gram scale synthesis of PZQ in 4 or 5 steps and in good overall yields. This methodology proved to be well suited for generating the pyrazino[1,2-a] isoindole and pyrazino[1,2-a] benzazepine analogues of PZQ.
SYNTHESIS OF TRICYCLIC SYSTEMS INCORPORATING THE AZEPINE RING
Shekhter, O. V.,Chernyak, A. S.,Sergovskaya, N. L.,Tsizin, Yu. S.,Mikhailitsyn, F. S.,et al.
, p. 1383 - 1387 (2007/10/02)
Some tricyclic compounds (derivatives of pyrazinobenzazepine, diazepinoisoquinoline, and some pyrimidoisoquinolines) which are analogs of the anthelmintic praziquantel have been synthesized.
Synthesis and Anthelmintic Activity of a Series of Pyrazinobenzazepine Derivatives
Brewer, Malcolm D.,Burgess, Malcolm N.,Dorgan, Roderick J. J.,Elliott, Richard L.,Mamalis, Patrick,et al.
, p. 2058 - 2062 (2007/10/02)
A series of 1,2,3,4,6,7,8,12b-octahydropyrazinobenzazepine derivatives was prepared and the cestocidal activity of the compounds evaluated in an in vitro Taenia crassiceps screen.Many of these derivatives proved to be highly active, and 2-(cyclohexylcarbonyl)-4-oxo-1,2,3,4,6,7,8,12b-octahydropyrazinobenzazepine, epsiprantel (BAN) (22), was selected for further development.The structure-activity relationships are discussed.
Benzazepines, and their use as anthelminthics
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, (2008/06/13)
A compound of formula (I): STR1 in which R is optionally substituted phenyl; C3-8 cycloalkyl; C5-8 cycloalkenyl; C1-8 alkyl which may be straight or branched; C2-8 alkenyl which may be straight or branched; 5- or 6- membered heterocyclyl; or optionally substituted phenyl C1-4 alkyl, each of Y and Z, which may be the same or different, is oxygen or sulphur; and X is --CH2 -- or oxygen, a process for the preparation of such compounds and their use in human and veterinary medicine.