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Structure of a Neoclerodane Dilactone from Baccharis rhomboidalis
Autor | dc.contributor.author | Manríquez Castro, Víctor | es_CL |
Autor | dc.contributor.author | San Martín Barrientos, Aurelio | es_CL |
Autor | dc.contributor.author | Rovirosa, Juana | es_CL |
Autor | dc.contributor.author | Von Schnering, H. G. | es_CL |
Autor | dc.contributor.author | Peters, K. | |
Fecha ingreso | dc.date.accessioned | 2014-01-08T12:03:15Z | |
Fecha disponible | dc.date.available | 2014-01-08T12:03:15Z | |
Fecha de publicación | dc.date.issued | 1990 | |
Cita de ítem | dc.identifier.citation | Acta Cryst. (1990). C46, 1170-1172 | en_US |
Identificador | dc.identifier.uri | https://repositorio.uchile.cl/handle/2250/119654 | |
Resumen | dc.description.abstract | 1-Hydroxyneoclerodane-3,13-diene- 15,16;- 19,20-diolide, C2oH2605, Mr = 346.42, orthorhombic, P212121, a = 15-601 (4), b = 15.962 (4), c = 7-093 (2) A, V = 1766.3 A 3, Z= 4, Dx = 1.303 Mg m -3, a(Mo Ka) = 0"71069 A, /z = 0.09 mm-1, F(000) = 744, T = 293 K, final R = 0.064 for 1430 unique observed reflections with F > 3tr(F). The molecular structure of the title compound consists of two trans-fused six-membered rings with a butenolide ring fused to both, and possesses as substituents a secondary and tertiary methyl group at C(8) and C(9), respectively, a secondary hydroxyl group at C(1), and a side chain with an trJ3-unsaturated y-laetone group at C(9). The methyl and hydroxyl groups and C(19) are in cis-axial configuration in agreement with the molecular structure proposed previously on the basis of chemical and spectroscopic methods [San-Martin, Rovirosa, Labb6, Givovich, Mahfi & Castillo (1986). Phytochemistry, 25, 1393-1395]. All bond lengths and angles are within the expected ranges. | en_US |
Idioma | dc.language.iso | en | en_US |
Tipo de licencia | dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Chile | * |
Link a Licencia | dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/cl/ | * |
Título | dc.title | Structure of a Neoclerodane Dilactone from Baccharis rhomboidalis | en_US |
Tipo de documento | dc.type | Artículo de revista |
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