Results 81 to 90 of about 80,153 (209)
Beilstein Journal of Organic Chemistry, 2014 Pyrrolo[2,1-a]isoquinoline alkaloids have been prepared via a visible light photoredox catalyzed oxidation/[3 + 2] cycloaddition/oxidative aromatization cascade using Rose Bengal as an organo-photocatalyst.
Carlos Vila +2 more
doaj +1 more source
Dutch survey pyrrolizidine alkaloids in animal forage [PDF]
, 2009 Pyrrolizidine alkaloids (PAs) are secondary plant metabolites produced by a number of plants from the Asteraceae (Compositae), Boriginaceae and Fabaceae (Leguminosae) families.
Jong, J., de +4 more
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Deoxygenation of Phenolic Alkaloids by a Modified Pd/C-Catalyzed Hydrogenolysis Method
, 2017 A modified palladium on carbon (Pd/C) catalyzed hydrogenolysis method for the removal of the phenolic-OH group in phenolic alkaloids as the 1-phenyl-1H-tetrazol-5-yl derivative by the addition of magnesium metal or ammonium acetate in acetic acid is ...
李水盛 +1 more
core +1 more source
AUIQ Complementary Biological SystemMonoamine oxidase A (MAO-A) has recently been identified as a candidate for cancer therapy due to its roles in tumor development and growth. Conventional approaches for the discovery of MAO-A inhibitors are both costly and time-consuming.
Reham A.Al-Anssari +3 more
doaj +1 more source
Two New Isoquinoline Alkaloids from Litsea cubeba [PDF]
, 2009 Two new aporphine-type isoquinoline alkaloids, (+)-N-(methoxy-carbonyl)-N-norlauroscholtzine (1) and (+)-N-(methoxy-carbonyl)-N-norglaucine (2), were isolated from Litsea cubeba and identified by spectroscopic techniques (NMR, MS, UV, and IR).
Qin-Gang Tan +6 more
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Inhibition of aldehyde reductase I by some isoquinoline alkaloids
, 1987 Aldehyde reductase I has been found to be inhibited by certain isoquinoline alkaloids (protoberberines, protopines, benzylisoquinolines, benzyltetrahydroisoquinolines, phthalideisoquinolines, pavinanes) and narceine imide.
Hana Paulová +3 more
core +1 more source
Isoquinoline Alkaloids from Active against Plant Microbial Pathogens
Natural Product Communications, 2009 Bioassay-guided fractionation of the crude extract of the whole plant of Macleaya cordata R. Br. led to the isolation of four alkaloids, which were identified as sanguinarine (1), chelerythrine (2), protopine (3) and α-allocryptopine (4) on the basis of ...
Hao Liu +7 more
doaj +1 more source
DEHYDROPUNTARENINE AND DEHYDROSAULATINE TO NEW ISOQUINOLINE ALKALOIDS FROM ROOTS OF BERBERIS ACTINACANTHA [PDF]
Journal of Sciences, Islamic Republic of Iran, 1990 The isolation and characterization of two new isoquinoline alkaloids, Dehydropuntarenine and Dehydrosaulatine, obtained during the column chromatography of an alkaloidal fraction from the roots of B. Actinacantha (Berberidaceae) are described.
doaj
Isoquinoline Alkaloids and Homoisoflavonoids from Bak and Bak
Natural Product Communications, 2008 The powdered bulbs and leaves of Drimiopsis barteri yielded two novel isoquinoline alkaloids: 5-hydroxy-7,2′,3′,4′-tetramethoxy{2H-1-}benzopyran [4,3-c]isoquinoline and 6-hydroxy-7,2′,3′,4′-tetramethoxy{2H-1-}benzopyran [4,3-c]isoquinoline, three new ...
Dieudonne Ngamga +7 more
doaj +1 more source
Cytotoxicity of Naturally Occurring Isoquinoline Alkaloids of Different Structural Types
Natural Product Communications, 2016 Forty-six isoquinoline alkaloids, of eleven structural types isolated in our laboratory, have been evaluated for their cytotoxicity against two cancer cell lines (Caco-2 and Hep-G2 cancer cells), as well as against normal human lung fibroblast cells ...
Jakub Chlebek +9 more
doaj +1 more source