171734-72-8Relevant 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)
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.
Syntheses of a variety of lamellarin compounds and analogues
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, (2008/06/13)
The present invention relates to methods for preparing a variety of Lamellarin compounds and analogues via a synthetic intermediate, which methods involved the step of performing an intramolecular cyclization of a compound of Formula (I) to produce compou
Assessment of Double-Barrelled Heck Cyclizations as a Means for Construction of the 14-Phenyl-8,9-dihydro-6H-[1]benzopyrano[4',3':4,5]pyrrolo[2,1-a]isoquinolin-6-one Core Associated with Certain Members of the Lamellarin Class of Marine Natural Product
Banwell, Martin G.,Flynn, Bernard L.,Hockless, David C. R.,Longmore, Robert W.,Rae, A. David
, p. 755 - 766 (2007/10/03)
The 1,2,4-trisubstituted pyrrole (4), which is readily prepared from pyrrole itself, undergoes double-barrelled Heck cyclizations to give, inter alia, compounds (3) and (17) for which crystal structures have been determined. Product (3) constitutes the co