Results 121 to 130 of about 5,376 (171)

Metabolic Engineering in Isoquinoline Alkaloid Biosynthesis

Current Pharmaceutical Biotechnology, 2007
Higher plants produce diverse classes of metabolites. Metabolic engineering offers tremendous potential to improve the production and quality of these chemicals. This report summarizes the possibility of using metabolic engineering in benzylisoquinoline alkaloid biosynthesis.
Fumihiko, Sato, Takayuki, Inui, Tomoya, Takemura   +2 more
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Antimicrobial Activity of Some Isoquinoline Alkaloids

Archiv der Pharmazie, 1991
AbstractThe isoquinoline alkaloids are of great importance to humanity because of their medicinal value and different structure. During the last ten years, many isoquinoline alkaloids were isolated from Fumaria and Corydalis species growing in Turkey1—6).There have been many researches on the antimicrobial activity of extracts of higher plants, but ...
U, Abbasoglu, B, Sener, Y, Günay, H, Temizer   +3 more
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Isoquinoline Alkaloids and Chemotaxonomy

2019
The isoquinoline alkaloids are a class of secondary metabolites classified into different groups, being the aporphinoids the most representative class. They are considered the second-largest class of alkaloids in terms of structural diversity staying behind only of indole alkaloids.
Anderson R. dos Santos, Nelissa P. Vaz
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Isoquinoline Alkaloids from Michelia fuscata

Chemistry of Natural Compounds, 2017
Two new isoquinoline alkaloids, fuscatine A (1) and fuscatine B (2), along with 21 compounds including eight isoquinoline alkaloids, northalifoline (3), thalifoline (4), corydaldine (5), N-methylcorydaldine (6), (6,7-dimethoxyisoquinolinyl)-(4′-methoxyphenyl)-methanone (7),(6,7-dimethoxyisoquinolinyl)-(4′-hydroxyphenyl)-methanone (8), liriodenine (9 ...
H. T. Li, C. L. Kao, C. R. Tsai, W. J. Li, C. Y. Chen   +4 more
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Isoquinoline alkaloids from Artabotrys brachypetalus

Biochemical Systematics and Ecology, 2003
The genus Artabotrys contains more than 100 species throughout tropical Africa and East Asia. A. brachypetalus Benth. (Annonaceae) is a small tree, shrub or liane, described firstly as a plant located only in Zimbabwe but also known to occur in Zambia (Baker, 1911).
Sagen, A., Sahpaz, S., Mavi, S., Hostettmann, Kurt   +3 more
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The Pyrrolo[2,1-a]isoquinoline Alkaloids

2011
The present chapter describes isolation, biogenetic proposals, and syntheses of the natural products 1-4 and 10-11 with a pyrrolo[2,1-a]-isoquinoline framework. Moreover, the syntheses of some structural analogs are discussed. The pyrrolo[2,1-a]isoquinolines are of interest due to their promising biological activities.
Ulrike, Pässler, Hans-Joachim, Knölker
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Asymmetric synthesis of isoquinoline alkaloids

Tetrahedron, 1987
Abstract The use of chiral formamidines affixed to variously substituted tetrahydroisoquinolines, allows asymmetric C-C bond forming reactions to occur α- to the amino group. In this manner, a wide variety of (S)-1-alkyl-1,2,3,4-tetrahydroisoquinolines were constructed in > 90% enantiomeric excess.
A.l. Meyers, Daniel A. Dickman, Michael Boes   +2 more
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Isoquinoline Alkaloids from Neolitsea Konishii

Journal of the Chinese Chemical Society, 1992
AbstractBy combination of centrifugal partition chromatography (CPC) and common separation methods, twelve known bases were isolated and characterized from the first chemical investigation of Neolitsea konishii (H.) K. & S. They belong to isoquinoline alkaloids of four types: eight aporphines, nornuciferine (1), N‐methyllaurotetanine (2 ...
Shoei‐Sheng Lee, Hsih‐Chin Yang
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Isoquinoline Alkaloids from Thalictrum delavayi

Planta Medica, 2001
Two new protoberberine alkaloids, 2,3,9,10-dimethylenedioxy-8-oxoprotoberberine (1) and 2,3,9,10-dimethylenedioxy-1,8-dihydroxyprotoberberine (2), together with nine known isoquinoline-type alkaloids were isolated from the roots of Thalictrum delavayi. Their structures were elucidated by spectral methods.
Mai Li, Xin Chen, Qin-Mei Tang, Jin-Sheng Zhang*   +3 more
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Isoquinoline alkaloids Amarillidaceae. Crinal alkaloids.

All the Materials. Encyclopedic Reference Book., 2022
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