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1. Ring structure characteristic of the group of opium alkaloids represented by papaverine.
2. A class of alkaloids containing the isoquinoline (1) ring structure.
References in periodicals archive ?
Syntheses and Antitumor Targeting G1 Phase of the Cell Cycle of Benzoyldihydroisoquinoline and Related 1-Substituted Isoquinolines.
Isoquinolines are derived biosynthetically from aromatic amino acid, phenylalanine or tyrosine molecules.
2002) and Buxaceae (Rahman and Choudhary 2001), isoquinolines from Papaveraceae (Kim 2002; Kim et al.
In the present study, Eliman's method was used to verify the inhibition of AChE activity of some isoquinolines alkaloids such as galanthamine, montanine, hippeastrine and pretazettine.
Aporphine alkaloids constitute one of the largest group of isoquinolines, including structures such as aporphincs, proaporphines, secoaporphines, oxoaporphines, dehydroaporphines, 7-hydroxyaporphines, aporphine dimmers and aristolactams (Pelletier 1987).
Two, nigellicine and nigellidine have an indazole nucleus, whereas nigellimine and its N-oxide are isoquinolines (Ali and Blunden, 2003).
The isoquinoline alkaloids are widely distributed in the realm of flora and fauna, and have gained significant consideration on account of their enormous biological activities [1].
Isoquinoline alkaloids, which currently number more than 2500 members, are isolated mainly from plants of subclasses Magnoliidae and Ranunculidae (Blaschek et al.
Phloem-specific expression of Tyrosine/Dopa Decarboxylase genes and the biosynthesis of isoquinoline alkaloids in opium poppy.
Presence of methyl-6,7dihydroxy-1,2,3,4-tetrahydroisoquinolines, derivatives of the neurotoxin isoquinoline, in parkinsonian lumbar CSF.
Previously, from the leal of Ocotea brenesii, from Costa Rica, the isoquinoline alkaloids (+)-isocorydine, (-)-3-hydroxynuciferine and 3-hydroxy-6a, 7-dehydronuciferine have been isolated (Lopez et al.
The present review describes research on novel natural isoquinoline alkaloids and their N-oxides isolated from different plant species.