Umbellatine C21H21O8N, the common alkaloid of the Himalyan species of Berberis yields on potassium permanganate oxidation hemipinic acid and on potassium hydroxide fusion, protocatechnic acid. These results show that the two methoxy groups are in adjacent positions in a benzene nucleus in umbellatine and that other groups, like the methylenedioxy and hydroxyl, are not present in the benzene ring containing the two methoxyl groups
Abstract: Feeding experiments with distant single or doubly labelled precursors show that the methyl...
The structures of four new alkaloids isolated from the bark of the rain forest trees Galbulimima bel...
Protoberberine alkaloids, including berberine, palmatine, and berberrubine, are produced by medicina...
Umbeilatine is shown to possess an imino methyl group. Of the 8 atoms of oxygen, 4 were shown in a p...
From the stem bark of Berberis umbellata a new alkaloid of the molecular formula C21H21O8N has been ...
The phenethylisoquinoline alkaloids comprise a relatively new class of alkaloids. They are structura...
The root of Rerberis floribunda, Wall. ex Don. has yielded eight alkaloids, e g., oxyacanthine, berb...
Chemical investigation of the alkaloids of Mahonia nepalensis D.C. has established the identity of '...
Berberine azide, berberine thiocyanate, and 8-cyano-8H-berberine were prepared from berberine chlori...
1237-1241Phytochemical investigation of the methanolic extract of the stem bark of Berberis aristat...
<p>Chemical structures of berberine and its 9-phenoxyalkyl substituted derivatives.</p
Atherospermine, the major base of Atherosoerma moschatum, has been shown to be identical with berba...
From the aerial parts (700g) of berberis sibirica pall. 6 isoquinoline alkaloids of protoberberine, ...
Plants produce many specific secondary metabolites as a response to environmental stress, especially...
The X-ray crystal structures have been determined for three alkaloids isolated from the bark of the ...
Abstract: Feeding experiments with distant single or doubly labelled precursors show that the methyl...
The structures of four new alkaloids isolated from the bark of the rain forest trees Galbulimima bel...
Protoberberine alkaloids, including berberine, palmatine, and berberrubine, are produced by medicina...
Umbeilatine is shown to possess an imino methyl group. Of the 8 atoms of oxygen, 4 were shown in a p...
From the stem bark of Berberis umbellata a new alkaloid of the molecular formula C21H21O8N has been ...
The phenethylisoquinoline alkaloids comprise a relatively new class of alkaloids. They are structura...
The root of Rerberis floribunda, Wall. ex Don. has yielded eight alkaloids, e g., oxyacanthine, berb...
Chemical investigation of the alkaloids of Mahonia nepalensis D.C. has established the identity of '...
Berberine azide, berberine thiocyanate, and 8-cyano-8H-berberine were prepared from berberine chlori...
1237-1241Phytochemical investigation of the methanolic extract of the stem bark of Berberis aristat...
<p>Chemical structures of berberine and its 9-phenoxyalkyl substituted derivatives.</p
Atherospermine, the major base of Atherosoerma moschatum, has been shown to be identical with berba...
From the aerial parts (700g) of berberis sibirica pall. 6 isoquinoline alkaloids of protoberberine, ...
Plants produce many specific secondary metabolites as a response to environmental stress, especially...
The X-ray crystal structures have been determined for three alkaloids isolated from the bark of the ...
Abstract: Feeding experiments with distant single or doubly labelled precursors show that the methyl...
The structures of four new alkaloids isolated from the bark of the rain forest trees Galbulimima bel...
Protoberberine alkaloids, including berberine, palmatine, and berberrubine, are produced by medicina...
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