Daphmacrodins A and B, alkaloids from Daphniphyllum macropodum
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چکیده
منابع مشابه
Five new alkaloids from the stem bark of Daphniphyllum macropodum.
Five new alkaloids, daphnicyclidins M and N (compounds 1 and 2) and calyciphyllines Q-S (compounds 3-5), along with four known ones, paxiphylline C (6), macropodumine B (7), macropodumine C (8) and daphnicyclidin A (9) were isolated from the stem bark of Daphniphyllum macropodum. Calyciphylline Q (3) is the first calyciphylline A derivative possessing a double bond between C-18 and C-19. Their ...
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The title compound, C(27)H(37)NO(7), is a Daphniphyllum alkaloid isolated from a branch of Daphniphyllum macropodum Miq. All of the five-membered rings adopt envelope conformations while the six- and seven-membered ring adopt chair conformations. Classical inter-molecular O-H⋯O and weak C-H⋯N hydrogen bonds are present in the crystal structure.
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Three new Daphniphyllum alkaloids, daphnioldhanins A-C (1-3), along with four known ones, were isolated from the aerial parts of saplings of Daphniphyllum oldhami. The structures of these alkaloids were established by spectroscopic methods. The relative configuration of 1 was further confirmed by a single-crystal X-ray diffraction analysis. In addition, the (1)H and (13)C NMR data of the free b...
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[structure: see text] Two types of Daphniphyllum alkaloids with unprecedented fused-hexacyclic ring systems, calyciphyllines A (1) and B (2), have been isolated from the leaves of Daphniphyllum calycinum (Daphniphyllaceae), and the structures and relative stereochemistry were elucidated on the basis of spectroscopic data.
متن کاملDaphmanidins C and D, novel pentacyclic alkaloids from Daphniphyllum teijsmanii.
[structure: see text] Two novel alkaloids with an unprecedented fused-pentacyclic skeleton, daphmanidins C (1) and D (2), have been isolated from the leaves of Daphniphyllum teijsmanii, and the structures were elucidated on the basis of spectroscopic data. The relative stereochemistry of 1 and 2 was assigned by combination of NOESY correlations and a simulation analysis. Daphmanidin C (1) eleva...
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ژورنال
عنوان ژورنال: Natural Products and Bioprospecting
سال: 2013
ISSN: 2192-2195,2192-2209
DOI: 10.1007/s13659-012-0095-z