ChemInform Abstract: The Alkaloids of Margaritaria indica (Euphorbiaceae). The Crystal Structure and Absolute Configuration of the Hydrobromide of (+)-15α-Methoxy-14,15-dihydrophyllochrysine

Autor:	Dayar Arbain, Allan H. White, Lindsay T. Byrne, J. R. Cannon, Lutz M. Engelhardt
Rok vydání:	1990
Předmět:	biology Chemistry Hydrobromide Margaritaria indica Euphorbiaceae Absolute configuration General Medicine Crystal structure biology.organism_classification Crystallography visual_art visual_art.visual_art_medium Bark Orthorhombic crystal system Diffractometer
Zdroj:	ChemInform. 21
ISSN:	0931-7597
Popis:	(-)-Phyllochrysine (1), (-)-securinine (2) and a new alkaloid (+)-15α-methoxy-14,15-dihydrophyllochrysine (3) have been isolated from both the bark and roots of Margaritaria indica ( Dalz .) G. L. Webster. The structure and absolute configuration of (3) follow from its spectroscopic properties and its synthesis from (-)- phyllochrysine (1) as well as from the crystal structure of its hydrobromide, obtained by X-ray diffraction. Diffractometer data at 295 K were refined by least-squares techniques to a residual of 0.053 (991 'observed' reflections). Crystals of 15α-methoxy-14,15-dihydrophyllochrysine hydrobromide are orthorhombic, P212121, a 14.324(3), b 14.194(3), c 7.240(2)Ǻ, Z 4.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3d52133988afb05d62748c32c99b8c0a https://doi.org/10.1002/chin.199028298 Zobrazit plný text záznamu Plný text